| 单词 | Portland cement |
| 例句 | Once complete, this grillage of steel would be filled and covered with Portland cement to produce a broad, rigid raft that Root called a floating foundation. The Devil in the White City 2003-02-11T00:00:00Z The authors write that much of the concrete used today is created using Portland cement, which Joseph Aspdin, a bricklayer from Leeds, England, received a patent for in the 19th century. Long a Foundational Material, Concrete Is Now a Finishing Touch 2022-02-16T05:00:00Z Sand or decomposed granite from each building site was combined with Portland cement, pressed into square blocks and stamped by hand with a pre-Columbian pattern. Frank Lloyd Wright at 150: Why his Los Angeles houses deserve a closer look 2017-06-08T04:00:00Z Fireslate, which resembles slate, is made from Portland cement, silica sand, water and fillers. How to restore Fireslate countertops Today, mortar in brick walls is made with Portland cement. How to strip the paint from a brick house 2018-06-08T04:00:00Z The kind typically sold here is made of crushed stone bound together by polymer resin or Portland cement. The solution for stubborn dirt on porcelain tile? These products, and elbow grease. 2019-07-12T04:00:00Z Most modern concrete starts with Portland cement, a powder made by heating limestone and clay to super-high temperatures and grinding them up. How are ancient Roman and Mayan buildings still standing? Scientists are unlocking their secrets 2023-10-02T04:00:00Z He mixed three parts of fine sand to one part of Portland cement. Opt for clay bricks when repaving 2023-07-31T04:00:00Z It’s an accurate description because regular concrete has stones, sand, Portland cement and water to activate the cement. What you need to know about patching blacktop driveways, holes 2023-06-19T04:00:00Z Concrete companies mix small stone chips, coarse sand, Portland cement and dry pigments together with a precise amount of water. Why you should consider clay pavers over concrete bricks 2023-06-12T04:00:00Z The heavy plaster, mixed with Portland cement, more than three inches thick and applied to a lath of chicken wire, required an ax to break through. 'Mayday! ... Firefighters trapped!': The battle to save Victory Baptist Church 2023-03-05T05:00:00Z Room to improve: Consider lower-carbon alternatives to Portland cement for certain applications. Solving Cement’s Massive Carbon Problem 2023-02-09T05:00:00Z I blend one part very fine sand to one part Portland cement to make my grout. Opt for clay bricks when repaving 2023-07-31T04:00:00Z Modern concrete, in contrast, is typically made from Portland cement: a mixture of limestone, clay, sand, chalk, and other ingredients ground and burnt at scorching temperatures. Scientists may have found magic ingredient behind ancient Rome’s self-healing concrete 2023-01-05T05:00:00Z In the article that went with the photo, all it said was to install the brick over a bed of compacted sand with some Portland cement in it. Perspective | How to build stunning brick patios and sidewalks 2022-05-17T04:00:00Z Reactive acid stains contain metallic salts that can chemically react with the Portland cement paste and add color. How to restore the look of stamped concrete that’s faded over the years 2022-05-03T04:00:00Z How it works: Roller mills or ball mills grind the clinker and gypsum into a fine gray powder known as Portland cement. Solving Cement’s Massive Carbon Problem 2023-02-09T05:00:00Z Tiny crystals in the Portland cement in the grout start to grow. Perspective | Diagnosing causes of grout defects in your floor — and preventing them in the first place 2022-04-12T04:00:00Z The cement stucco I recommend is a mixture of fine sand, Portland cement, a dash of hydrated lime and water. Enliven drab concrete, but not with paint 2022-04-06T04:00:00Z Cement paint is a mixture of Portland cement and clear water blended to the consistency of latex paint. Stone walls and archways stand strong when built carefully 2022-03-10T05:00:00Z Tiny crystals in the grout’s Portland cement begin expanding. Grout gone bad: Why it can fail, how to avoid issues 2022-03-03T05:00:00Z Back then, masons knew that adding extra Portland cement to their concrete mix would make it stronger. The secret ingredient that can keep concrete from crumbling 2022-02-03T05:00:00Z For a strong repair, mix 4 parts sand with 2 parts Portland cement. How to patch a cracked sidewalk or concrete patio 2021-08-10T04:00:00Z Cement paint is just what it sounds like: You mix Portland cement with water until it has the consistency of paint. Enliven drab concrete, but not with paint 2022-04-06T04:00:00Z For a strong mortar, I recommend using one part Portland cement, three parts medium or coarse sand and one half-part hydrated lime. Stone walls and archways stand strong when built carefully 2022-03-10T05:00:00Z If excess water seeps into the setting floor grout, it can dilute the grout’s Portland cement content and allow for water to soak into or create puddles on the drying grout. Grout gone bad: Why it can fail, how to avoid issues 2022-03-03T05:00:00Z Portland cement is a magic gray powder very similar to hydrated lime. The secret ingredient that can keep concrete from crumbling 2022-02-03T05:00:00Z The ingredients in U.S. concrete are typically mandated by local building codes and are based on Portland cement, a common variety since the 19th century. Concrete makers face heavy lift on climate pledges 2021-07-01T04:00:00Z Floor tiles must be installed in thinset, which is a mix of fine silica sand and Portland cement. How to successfully DIY a mosaic tile floor 2021-05-21T04:00:00Z Andrew Jones, who managed the project for NETL, explained that the process provided a substitute for traditional concrete blocks made with Portland cement. Carbon Capture Technologies Are Improving Nicely 2021-05-07T04:00:00Z Suffice it to say that many modern mortar mixes are a proprietary blend of Portland cement, hydrated lime and other ingredients blended for the design purpose of the mortar. Perspective | How to match new mortar on your brick home with the old 2020-08-18T04:00:00Z Portland cement is strong, but why not give the mix another boost? The secret ingredient that can keep concrete from crumbling 2022-02-03T05:00:00Z Sanded grout is almost always just a blend of tinted Portland cement and fine silica sand. Perspective | Tips for installing and cleaning a pebble-stone shower floor 2020-07-21T04:00:00Z During the 1940s and 1950s, the mission’s well-meaning stewards covered the building with concrete plaster made from Portland cement. Mission San Xavier in Tucson to undergo preservation project 2020-03-01T05:00:00Z Portland cement is crucial to the current process of hardening concrete, but because it requires high, usually coal-fired heat, it results in 10% of the globe’s CO2 emissions, Jones added. Carbon Capture Technologies Are Improving Nicely 2021-05-07T04:00:00Z His colleagues at Leeds University are also exploring alternatives to Portland cement. Concrete: the most destructive material on Earth 2019-02-25T05:00:00Z This means six 94-pound bags of Portland cement go into each cubic yard of concrete. The secret ingredient that can keep concrete from crumbling 2022-02-03T05:00:00Z Gittman, now at East Carolina University, is testing an alternative material called Oyster Catcher that is made of jute cloth dipped in Portland cement and rolled into various hollow configurations. Rebuilt Wetlands Can Protect Shorelines Better Than Walls 2019-04-02T04:00:00Z The modern industrialised form of the binder – Portland cement – was patented as a form of “artificial stone” in 1824 by Joseph Aspdin in Leeds. Concrete: the most destructive material on Earth 2019-02-25T05:00:00Z The crown material should be made using concrete that has a blend of hydrated lime, Portland cement and small pea-sized gravel. Analysis | What to do about a leaking roof flashing 2019-01-08T05:00:00Z Not only does the production of Portland cement involve quarrying - causing airborne pollution in the form of dust - it also requires the use of massive kilns, which require large amounts of energy. The massive CO2 emitter you may not know about 2018-12-16T05:00:00Z Portland cement is produced in large part with limestone, a type of rock that's composed mainly of a chemical compound called calcium carbonate. Cement Producers Are Developing a Plan to Reduce CO2 Emissions 2018-07-09T04:00:00Z It was then a simple matter of using the same mastic a tile setter would use to secure the stone in place, then grouting around the edge with a mixture of Portland cement and sand. Former mason restores historic Idaho headstones 2018-05-07T04:00:00Z Modern buildings are constructed with concrete based on Portland cement. Scientists explain ancient Rome's long-lasting concrete - BBC News 2017-07-04T04:00:00Z By contrast, modern concrete, based on Portland cement, is not supposed to change after it hardens – meaning any reactions with the material cause damage. Why Roman concrete still stands strong while modern version decays 2017-07-04T04:00:00Z Instead of Portland cement, the Roman concrete used a mix of volcanic ash and lime to bind rock fragments. Seawater is the secret to long-lasting Roman concrete 2017-07-02T04:00:00Z If the surface of concrete has flaked off, you can make up a stucco mix with Portland cement and sand to repair it. A top-to-bottom list of what to check outside your home post winter 2017-04-18T04:00:00Z It’s a mixture of Portland cement, mica and quartz that is supposed to shield the tunnel’s concrete walls from exceeding 716 degrees, to meet national codes. Inside the Highway 99 tunnel: Bertha’s done digging, but the roadway work rolls on 2017-04-15T04:00:00Z The centers of the quatrefoil emblems would be installed using pigmented Portland cement mortar and fine sand. Building a decorative stone patio to last 2017-01-24T05:00:00Z Making Portland cement releases carbon from burning fuel to heat limestone and clays to temperatures of 1,450C - and also from the heated limestone itself. Swansea lagoon should use 'Roman-style' concrete: expert - BBC News 2017-01-13T05:00:00Z The Thing is actually a hulking cluster of five cement silos — storage for Portland cement, the flour-like substance made from crushed limestone, that serves as the glue holding together construction concrete. Roadside relics: Your guide to that Great Concrete Thing and other oddities along our state’s highways 2016-11-03T04:00:00Z Cement paint is made by mixing Portland cement with fresh water. A top-to-bottom list of what to check outside your home post winter 2017-04-18T04:00:00Z You may want to consider using a one-to-one mixture of hydrated lime to Portland cement as the binder with the sand you use. How to find the right mason for a fireplace remodel 2016-02-02T05:00:00Z A slurry of Portland cement and fine sand is injected under significant pressure under the slab. How to repair a shifting porch slab 2016-01-26T05:00:00Z Prof Monteiro's team found that the Romans, by contrast, used less lime baked at just 900C or lower, requiring far less fuel than Portland cement. Swansea lagoon should use 'Roman-style' concrete: expert - BBC News 2017-01-13T05:00:00Z Mike combines heavy sand, mortar and Portland cement to create modern chinking that is then applied in a way that it sticks out, allowing water to shed. EXCHANGE: Former political candidate runs construction firm 2015-12-14T05:00:00Z HNF’s nomination suggested Melmont’s major structural issues stem from the house’s modern modifications, which includes the use of Portland cement to repair the house’s stucco exterior. Natchez house on most endangered historic places list 2015-10-21T04:00:00Z When you’re mixing in the gravel, add three parts gravel, two parts sand and two parts Portland cement. How to repair a leaky brick wall 2015-04-29T04:00:00Z To add a thin patch of concrete that wouldn’t exceed 3/8 -inch in thickness, all you do is mix coarse clean sand with Portland cement. The warm-weather home repairs you should be doing now 2015-05-06T04:00:00Z He certainly used the sand and added Portland cement. Before filling cracks, it’s important to first clean stucco 2015-03-26T04:00:00Z Making Portland cement requires lots of heat, and thus produces a considerable amount of carbon dioxide. The house of the future? It’s a Honda 2015-03-19T04:00:00Z The most common construction cement is Portland cement. Green Cement To Help Reduce Carbon Emissions 2014-06-23T04:00:00Z Add plenty of Portland cement to the mix so it bonds well with the existing concrete. How to repair a leaky brick wall 2015-04-29T04:00:00Z The repair material should be mixed no less than two parts sand to one part Portland cement. Ask the Builder: A solution that sticks for crumbling concrete surfaces I’d generally mix two parts sand to one part Portland cement/lime blend. Before filling cracks, it’s important to first clean stucco 2015-03-26T04:00:00Z Portland cement, Edwin Trout tells me proudly, won easily. Calcium, building block for the world 2014-03-04T00:20:20Z That’s a good thing, considering that “manufacturing Portland cement accounts for seven percent of the carbon dioxide that industry puts into the air,” as lead researcher Paulo Monteiro noted in a statement. These Two Ancient Roman Techs Could Disrupt Modern Industry 2013-08-25T20:03:00Z When you’re not using any stone, just mix two parts sand to one part Portland cement. How to repair a leaky brick wall 2015-04-29T04:00:00Z Iraqi nationalism was particularly resilient, likened to a bag of Portland cement at the feet of an old man I interviewed in Baghdad in March, 2004. Egypt's Crisis Signals the Unraveling of Arab Nations 2013-07-02T19:05:22Z You may find that a mix of three parts sand to one part Portland cement is what best matches your stucco. Before filling cracks, it’s important to first clean stucco 2015-03-26T04:00:00Z Their canoe, called Sentinel after the famous domed rock at Yosemite National Park, looked like it was made of porcelain rather than Portland cement. Out of Concrete and Drudgery Come Canoes That Float 2013-06-24T03:23:20Z “The problem is that manufacturing Portland cement accounts for 7 percent of the carbon dioxide that industry puts into the air.” Ancient Roman Concrete Is About to Revolutionize Modern Architecture 2013-06-14T17:05:12Z Yet Portland cement is heated to 3,000 degrees, so more carbon dioxide is emitted in that process -- and cement doesn't recapture any of the carbon. Green Blog: In a Lime Plaster Job, a Leonardo Moment 2012-12-21T12:30:00Z We cannot set the heart right with Portland cement! Edward Hoare, M.A. A record of his life based upon a brief autobiography 2012-03-28T02:00:25.040Z Your job is to try to locate a Portland cement that, once dry and cured, matches the color of the paste you see in between the grains of your stucco sand. Before filling cracks, it’s important to first clean stucco 2015-03-26T04:00:00Z Stone copings are best, but they are costly, and Portland cement is sometimes substituted. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 7 "Horticulture" to "Hudson Bay" 2012-03-04T03:00:13.390Z The Portland cement formula crucially lacks the lyme and volcanic ash mixture. Ancient Roman Concrete Is About to Revolutionize Modern Architecture 2013-06-14T17:05:12Z In the neighbourhood of Glens Falls are valuable quarries of black marble and limestone, and lime, plaster and Portland cement works. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" 2012-01-11T03:00:20.463Z Maschinen Construct., recommends the use of a thick paste made of a mixture of Portland cement and glue. Scientific American, Vol. XXXIX.?No. 24. [New Series.], December 14, 1878 A Weekly Journal Of Practical Information, Art, Science, Mechanics, Chemistry, And Manufactures 2012-01-05T03:00:31.783Z The total quantity of Portland cement used was 42,500 bbl. of "Pyramid" and 32,500 bbl. of "Hidalgo." ASCE 1193: The Water-Works and Sewerage of Monterrey, N. L., Mexico The 4th article from the June, 1911, Volume LXXII, Transactions of the American Society of Civil Engineers. Paper No. 1193, Feb. 1, 1911. 2012-01-02T03:00:24.717Z The floors of the passages and corridors throughout the department should be covered with terrazzo, which is a mixture of Portland cement and marble chips. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 7 "Horticulture" to "Hudson Bay" 2012-03-04T03:00:13.390Z I advised them what to do, and after a good deal of work, Portland cement and puddled clay got them out of their difficulty. The Inhabitants of the Philippines 2011-11-23T03:00:21.653Z The floor of this was laid first and plastered over with a mixture of Portland cement and sand, and when dry it was as hard and firm as marble. Harry Milvaine The Wanderings of a Wayward Boy 2011-09-08T02:00:23.340Z Also the name of the best work to consult upon the manufacture of Portland cement. Scientific American, Vol. XXXIX.?No. 24. [New Series.], December 14, 1878 A Weekly Journal Of Practical Information, Art, Science, Mechanics, Chemistry, And Manufactures 2012-01-05T03:00:31.783Z Then you are going to need Portland cement—a whole world of it. The City of Numbered Days 2011-08-31T02:01:25.807Z Calcium carbonate concentrated in lakes through the combined action of chemical and vital agencies produces the so-called marl, now extensively utilized in the manufacture of Portland cement. North America 2011-05-05T02:00:20.027Z Foundation walls shall be built of stone, brick, Portland cement concrete, iron or steel. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 6 "Foraminifera" to "Fox, Edward" 2011-04-22T02:00:08.637Z Driven iron piles are not much seen now, and Portland cement concrete seems the fashion, and no doubt it is better. Scamping Tricks and Odd Knowledge Occasionally Practised upon Public Works 2011-01-14T03:00:46.103Z Manufacture of Portland cement, the type most widely used, is the third-biggest source of mercury air pollution in the country, the agency. said. | Washington: Mercury Limits Are Set for Cement Plants 2010-08-10T00:26:00Z Then I spent the $3, and some more, for Portland cement. The Idyl of Twin Fires Deposits of true chalk are utilized in the manufacture of Portland cement for local markets. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip" Another form of foundation takes the shape of Portland cement concrete blocks, and is used chiefly for bridges and in marshy land, &c. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 6 "Foraminifera" to "Fox, Edward" 2011-04-22T02:00:08.637Z But bless me, we had Portland cement, it was supplied by the company, you understand. Scamping Tricks and Odd Knowledge Occasionally Practised upon Public Works 2011-01-14T03:00:46.103Z Owing, however, to the fact that the price of timber has increased considerably, whilst that of Portland cement has been reduced, durable concrete superstructures are beginning to be substituted for the rapidly decaying cribwork structures. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" Among the city’s manufactures are refined oil, Portland cement, vitrified brick and tile, glass, asphalt, ice, cigars, drilling machinery, and flour. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7 "Cerargyrite" to "Charing Cross" The material is then in a partially burnt and slightly sintered state, but it is not fully clinkered and would not make Portland cement. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" There is a large Portland cement factory here. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4 "Carnegie Andrew" to "Casus Belli" The brickwork was in Portland cement, and believe me, I never would have done what I did if it had been lime mortar. Scamping Tricks and Odd Knowledge Occasionally Practised upon Public Works 2011-01-14T03:00:46.103Z This rendering is usually composed of lime and hair mortar, though Portland cement has come into use to some extent recently. Cottage Building in Cob, Pisé, Chalk and Clay a Renaissance (2nd edition) At one time Portland cement concrete was considered to be lacking in fireproof qualities, but now it is regarded as one of the best fire-resisting materials known. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" Another method of making Portland cement which has been proposed and tried with some success consists in fusing the raw materials together in an apparatus of the type of a blast furnace. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" The city is situated in a fine farming region, has an important flouring and grist mill industry, and also manufactures Portland cement, liniment, lumber, furniture, sashes, doors and blinds, brass castings, sleighs, shoes, &c. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" I forgot to say the piles were driven, and a platform fixed on the top for the wall in the old style, but it has gone out now, since Portland cement concrete came into fashion. Scamping Tricks and Odd Knowledge Occasionally Practised upon Public Works 2011-01-14T03:00:46.103Z He tells you also not to be ‘hadden doun’—his own expression—by the theory of strains, and that Portland cement, properly sanded, will go a long way.” The Works of Robert Louis Stevenson - Swanston Edition Vol. 13 (of 25) The matrix should be Portland cement, and the nature of the aggregate is important. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" Many different forms of kiln are used for burning Portland cement. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" The joints of this pipe should be made with Portland cement mixed with an equal part of sand, and the space at the joint completely filled. Rural Hygiene This type is designated as asphaltic concrete because of the analogy of the mixture to Portland cement concrete. American Rural Highways Closely associated with limestone in commercial uses, as well as in chemical composition, is calcareous marl, which is used extensively in the manufacture of Portland cement. The Economic Aspect of Geology The matrix most commonly used is Portland cement, by far the best and strongest of them all. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" Celite is little affected by water, and has but small influence on the setting; alite is decomposed and hydrated, this action constituting the main part of the setting of Portland cement. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" Probably few materials have been found more generally useful to the civil engineer, in works which are not of metal, than has been Portland cement. Scientific American Supplement, No. 488, May 9, 1885 Portland cement concrete is sometimes used as a foundation for the mixed macadam, but not often. American Rural Highways Shales, because of their thinly bedded character and softness, are of no value as building stones, but are used in the manufacture of brick, tile, pottery, and Portland cement. The Economic Aspect of Geology When mixed the concrete is carried at once to the position required, and if the matrix is quick-setting Portland cement this operation must not be delayed. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" The only connexion between Portland cement and the place Portland is that the cement when set somewhat resembles Portland stone in colour. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" The Embankment is a magnificent piece of work, extending for nearly a mile, and made of Portland cement concrete, faced with dressed blocks of granite. Chelsea The Fascination of London Foundation.—The foundation for brick roads is usually of Portland cement concrete, the thickness varying with the nature of the traffic and the kind of soil upon which the pavement is built. American Rural Highways The world trade is chiefly in Portland cement. The Economic Aspect of Geology To give a rough idea, however, it may be said that its safe crushing load would be about � cwt. per sq. in. for lime concrete, and 1 to 5 cwt. for Portland cement concrete. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" A case in point is the employment of hydraulic lime in place of Portland cement as grouting outside the cast-iron tubes used for lining tunnels made by the shield system. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" All of the brickwork throughout chimney and fireplace should be laid in first-class cement mortar which consists of one part Portland cement to three parts clean, sharp sand. Making a Fireplace Cement Grout Filler.—One of the most commonly used fillers for brick pavements consists of a grout composed of Portland cement and fine sand. American Rural Highways Clays are used principally for building and paving brick and tile, sewer-pipe, railroad ballast, road material, puddle, Portland cement, and pottery. The Economic Aspect of Geology The safe tensile strength of Portland cement concrete would be something like one-tenth of its compressive strength, and might be far less. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" The composition of Portland cement varies within comparatively narrow limits, and for given raw materials the variations are tending Composition. to become smaller as regularity and skill in manufacture increase. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" I bid on the best grade of Portland cement for that job. The Making of Bobby Burnit Being a Record of the Adventures of a Live American Young Man Of these only two—wooden blocks and Portland cement, have been in general use more than a few years. Northern Nut Growers Association Report of the Proceedings at the Fifteenth Annual Meeting New York City, September 3, 4 and 5, 1924 The United States exports a small amount of crude gypsum to Canada, principally for use in Portland cement manufacture. The Economic Aspect of Geology In regard to durability good Portland cement concrete is one of the most durable materials known. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" The use of trass in this manner as an adjunct to Portland cement has been advocated by W. Michaelis, and undoubtedly increases the strength of the material, but it has not become general. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" The concrete was 1 of Portland cement to 6 of gravel. Concrete Construction Methods and Costs For the personal use of the average orchardist, Portland cement is one of the last in the list mentioned above that I would recommend. Northern Nut Growers Association Report of the Proceedings at the Fifteenth Annual Meeting New York City, September 3, 4 and 5, 1924 First, he must buy Portland cement of the best quality. Diggers in the Earth Portland cement concrete, on the other hand, may be used without fear in sea-water, provided that certain reasonable precautions are taken. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" Roman Cement is another cement of the Portland class which came into use shortly before the manufacture of artificial Portland cement was attempted. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" Both faces of the wall were painted with a 1-1 mixture of cement and sand; the inner face was also painted with a 1-1 mixture of waterproof Star Stettin Portland cement and sand. Concrete Construction Methods and Costs I have used Portland cement but I treated with creosote first. Northern Nut Growers Association Report of the Proceedings at the Fifteenth Annual Meeting New York City, September 3, 4 and 5, 1924 In Philadelphia the blocks must be composed of at least one barrel of Portland cement to five barrels of crushed rock or gravel. Diggers in the Earth Considerable alarm was created about the year 1887 by the failure of two or three large structures of Portland cement concrete exposed to sea-water, both in England and other countries. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" The particular method of granulating slag for Passow cement produces a material which sets per se and attains a strength comparable with that of Portland cement. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" The concrete was made of Portland cement and a natural mixture of sand and gravel in the proportions of 1-8 for the foundations, 1-6 for arches and spandrel walls and 1-4 for the parapet wall. Concrete Construction Methods and Costs Later, Portland cement was used in preference to wood for fillings, probably mainly because it was more easily handled. Northern Nut Growers Association Report of the Proceedings at the Fifteenth Annual Meeting New York City, September 3, 4 and 5, 1924 The varying composition of kankar naturally results in a product of irregular character, and consequently cement so made can replace Portland cement only for certain purposes. The Panjab, North-West Frontier Province, and Kashmir Indeed, no Portland cement is free from the liability to be decomposed by sea-water, and on a moderate scale this action is always going on more or less. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" The greater part of the Portland cement made in England is manufactured on the Thames and Medway. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" The arch is Portland cement concrete of normally a 1-3-7½, 1½-in. screened stone mixture, but where the voids in the broken stone exceeded 40 per cent., it is a 1-3-6 mixture. Concrete Construction Methods and Costs It was he who suggested the material for the roof—pounded coral, of which the island of Zanzibar actually consists, mixed with Portland cement and forming a solid arch across the church. Chatterbox, 1906 Well, there’s probably the only place in the world where there’s just the juxtaposition of sand and clay and chalk to make Portland cement. Aladdin & Co. A Romance of Yankee Magic The concrete itself should always be the very best quality, and Portland cement should be used on account of its superiority to all others. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" It will be observed that in the hydration of tricalcium silicate, the main constituent of Portland cement, a large portion of the lime appears as calcium hydroxide, i.e. slaked lime. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" The invert bricks are laid in Portland cement mortar and the arch has a mortar lining and is waterproofed with 1-in. of mortar on top. Concrete Construction Methods and Costs Milk however should never be used except to brighten up some old work for one or two years, and each gallon should contain three pounds of Portland cement, frequently stirred. The Choctaw Freedmen and The Story of Oak Hill Industrial Academy The wall is of brick, faced with granite and founded in Portland cement; it looks solid enough to withstand the tides of many a hundred years. Westminster The Fascination of London Up the Llanfyllin branch, however, there came the bulk of the stores, including the huge pipes, and the Portland cement for the bed of the lake. The Story of the Cambrian A Biography of a Railway Some of these naturally possess a composition differing but little from that of the mixture of raw materials artificially prepared for the manufacture of Portland cement itself. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" Owing to the imperfection and irregularity of the natural rock mixture, natural cement is weaker and less uniform than Portland cement. Concrete Construction Methods and Costs That is to say, the whole region was a cement-mine—and they make the finest kind of Portland cement there now, five thousand barrels a day, with a plant that cost $2,000,000. Chapters from My Autobiography It should be used in all good class work, where Portland cement is not desired. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" It is a difficult matter to stop the burrowing of rats; the best plan is to fill the holes with Portland cement mixed with bits of bottle glass broken in small pieces. Natural History of the Mammalia of India and Ceylon The product termed slag cement sets slowly, but ultimately attains a strength scarcely inferior to that of Portland cement. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" Portland cement concrete can be hauled a considerable distance in a dump cart or wagon before it begins to harden; natural cement sets too quickly to permit of its being hauled far. Concrete Construction Methods and Costs The roads are admirably laid, and the employment of concrete made of Portland cement and the sand and pebbles of the seashore, since followed at Ardfert, was initiated at Dromore. Disturbed Ireland Being the Letters Written During the Winter of 1880-81. Ordinary lime mortar may have its strength considerably enhanced by the addition of a small proportion of Portland cement. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Atlas was there, bending under the weight of two or three hundred pounds of Portland cement. Personal Recollections of Birmingham and Birmingham Men They may be regarded as badly-mixed Portland cements, and need no special description. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" Portland cement does not begin to set in less than 30 minutes. Concrete Construction Methods and Costs With Portland cement and the sand and pebbles of the adjacent sea-shore he has made a concrete village, and given his farmers houses of a kind previously unknown in his neighbourhood. Disturbed Ireland Being the Letters Written During the Winter of 1880-81. It has about one-third of the strength of Portland cement, by which it is now almost entirely supplanted. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" "How much Portland cement is used to make a cubic yard of concrete?" Space Tug It is made by granulating blast furnace slag of suitable composition and finely grinding the product, either alone or with an admixture of about 10% of Portland cement clinker. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" Portland cement concrete can, therefore, be hauled a mile before it begins to set. Concrete Construction Methods and Costs A test of the neat cement must be made with each mortar series for comparison of the quality of the typical Portland cement. Transactions of the American Society of Civil Engineers, vol. LXX, Dec. 1910 Federal Investigations of Mine Accidents, Structural Materials and Fuels. Paper No. 1171 To give stability the sides of the voussoirs are gauged out hollow and grouted in Portland cement, thus connecting each brick with the next by a joggle joint. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" The portion of the tunnel affected was bulkheaded at each end, packed with rubble and grouted with Portland cement mortar injected under pressure through pipes sunk from the street surface above. The New York Subway Its Construction and Equipment In fact, excellent Portland cement can be prepared from materials free from iron. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" The wearing surface is 1 in. thick, or 1 part Portland cement, 1 part clean, sharp, coarse sand, and 3 parts screened pea gravel, crushed granite, quartzite or hard limestone. Concrete Construction Methods and Costs The concrete mixture was 1 part Alpena Portland cement, 1 part sand, 1-1/2 parts buckwheat gravel and 3-1/2 parts gravel ranging from 1/4 to 3/4 in. in size. Some Mooted Questions in Reinforced Concrete Design American Society of Civil Engineers, Transactions, Paper No. 1169, Volume LXX, Dec. 1910 In the external walls of the Albert Hall the mortar used was one part Portland cement, one part grey Burham lime and six parts pit sand. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" After the lining was completed, Portland cement grout was again injected under pressure, through holes left in the roof, until further movement of the fill overhead was absolutely prevented. The New York Subway Its Construction and Equipment The quality of Portland cement is ascertained by its analysis and by determining its specific gravity, fineness, mechanical strength and soundness. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" Eight culverts, having an aggregate length of 306 ft. were built, using a mixture of Portland cement and limestone and screenings. Concrete Construction Methods and Costs This may to a certain degree be due to the high coefficient of expansion Portland cement concrete has by heat. Scientific American Supplement, No. 643, April 28, 1888 These can be sunk to almost any depth or brought up to any height, and are filled with Portland cement concrete. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" The upper part of the building is of red brick, relieved by pilasters and window dressing of Portland cement, the effect being very pleasing to the eye. A Winter Tour in South Africa Among those who experimented in this direction was Joseph Aspdin, of Leeds, who added clay to finely ground limestone, calcined the mixture, and ground the product, which he called Portland cement. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" The top layer consists of 2 ins. of 1-2-4 Portland cement and screened gravel, ¼ in. to 1 in., concrete. Concrete Construction Methods and Costs In foundations, according to the same authority above quoted, properly made Portland cement concrete may be trusted with a safe load of 25 tons per square foot. Scientific American Supplement, No. 643, April 28, 1888 So much has been said and written on and in relation to Portland cement that further communications upon the subject may appear to many of the present company to be superfluous. Scientific American Supplement, No. 620, November 19,1887 Anyone could see that this here substance is a dead ringer for Portland stone, and I am going to make heaps and heaps of it and call it 'Portland cement.' Love Conquers All English hydraulic limes are of a different class; they contain a good deal of alumina and ferric oxide, and in composition resemble somewhat irregular Portland cement. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" The concrete for the piers was a mixture of 1 part Portland cement to 7 parts gravel; for the arches, the concrete was mixed 1 to 5. Concrete Construction Methods and Costs You can make a very pretty fireplace for wood of the common buff-colored fire-bricks, either alone or variegated with good common red bricks; a hearth of encaustic tile, pressed bricks, or even Portland cement. Homes and How to Make Them The demand for Portland cement has increased and is still increasing at a rapid ratio. Scientific American Supplement, No. 620, November 19,1887 Rumor hath it that the first Portland cement in America was made at Allentown, Pa., in 1875, but I wouldn't want to be quoted as having said that. Love Conquers All When gauged with water and made into a mortar it sets slowly, but ultimately becomes almost as strong as Portland cement. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" The blocks were made of a 1-2-4½ concrete faced with a 1-3 mixture of Dragon Portland cement and bluestone screenings from ⅜-in. size to dust. Concrete Construction Methods and Costs The plaster on the inside is in this case often rendered in nearly neat Portland cement. Burroughs' Encyclopaedia of Astounding Facts and Useful Information, 1889 The French also, with a hemispherical iron reflector backed with Portland cement, increased the bell range in the ratio of 147 to 100 over a horizontal arc of 60°, beyond which its effect gradually diminished. Scientific American Supplement, No. 470, January 3, 1885 With a trowel put on the board one part of Portland cement to three parts of sand. The Library of Work and Play: Gardening and Farming. The Portland cement, before it is accepted at the works, is tested by means of an Aidie's machine. Scientific American Supplement, No. 530, February 27, 1886 Portland cement concrete, sand and broken stone or gravel mixtures in the proportions of 1-3-5 and 1-3-6 are used for base slabs. Concrete Construction Methods and Costs This mortar is equal to Portland cement, and is of extraordinary strength. Burroughs' Encyclopaedia of Astounding Facts and Useful Information, 1889 An improved method of testing Portland cement has been adopted by M. Deval, Chief Superintendent of Bridges and Roads, who has charge, under M. Saele, of the Public Works Laboratory of the City of Paris. Scientific American Supplement, No. 803, May 23, 1891 The cement rocks, which formed a principal part of the exhibit, have already attracted capital, and Portland cement of the highest quality is now being manufactured to a limited extent. Final Report of the Louisiana Purchase Exposition Commission An ordinary brick or stone wall is inefficient unless well covered with good Portland cement polished smooth. Science in the Kitchen. The concrete used in the piles was a 1-3-5 Portland cement, sand and 1½-in. broken stone mixture. Concrete Construction Methods and Costs The bottom consists of brickwork 1.10 meters thick, rendered with Portland cement, and resting on a layer of concrete 1 meter thick. Scientific American Supplement, No. 586, March 26, 1887 After preparation, the briquettes are allowed to harden in air for a period ranging from 24 hours for Portland cement to 30 days for certain slow-setting hydraulic limes. Scientific American Supplement, No. 803, May 23, 1891 The whole deck was then carefully calked and the sides made watertight with Portland cement. Scientific American Supplement, No. 799, April 25, 1891 Portland cement, however, is only suitable for situations where the foundation is absolutely firm, as, should there be the slightest settlement, fissures would certainly be produced. Scientific American Supplement, No. 595, May 28, 1887 The concrete used was a mixture of 1 Portland cement, 3 sand, 3⅝-in. screened limestone, and 4 2-in. stone. Concrete Construction Methods and Costs Best stocks, set in Portland cement and sand 1 to 1, and three months old. Scientific American Supplement, No. 601, July 9, 1887 Portland cement of good quality will not only stand water at 80� C., but will attain in seven days about the same strength as is reached in the cold after 28 days. Scientific American Supplement, No. 803, May 23, 1891 After cooling, the clinker is ground into very fine powder, which is the Portland cement of commerce. Edison, His Life and Inventions A layer of Portland cement of considerable thickness also gives increased stability to the brick lining and other portions of the tunnel, and the whole of the flooring will be bricked. Scientific American Supplement, No. 384, May 12, 1883 Mr. White says that a grout containing more than 1 part of sand to 1 of Portland cement will not run freely through a 2-in. pipe, as the sand settles out and chokes the pipe. Concrete Construction Methods and Costs It has the quality of setting with exceptional rapidity, and is on that account sometimes the best material to employ; but for almost every purpose the artificial compound known as Portland cement is preferable. Scientific American Supplement, No. 601, July 9, 1887 The Scandinavian Portland cement manufacturers have in hand tests on cubes of cement mortar and cement concrete, which were started in 1896, and are to extend over a period of twenty years. The Sewerage of Sea Coast Towns True, but as ANY good Portland cement can be used, and no restrictions as to source of supply are enforced, he, or rather his company, will be merely one of many possible purveyors. Edison, His Life and Inventions The walls are built of colored wall stones known as "insides," and half-timbered brickwork covered with the Portland cement stucco, finished Panan, and painted a cream-color. Scientific American Supplement, No. 384, May 12, 1883 The concrete was composed of 1 part Vulcanite Portland cement, 2 parts of fine and coarse sand mixed and 4 parts of gravel 1 in. and under in size. Concrete Construction Methods and Costs Another and a more popular method is to build the work in cement, now usually Portland cement. Scientific American Supplement, No. 601, July 9, 1887 It is more like Portland cement than anything else, and it is most penetrative and hard to get rid of; it gets in the hair, down the neck, into the shoes and it sticks. The War Romance of the Salvation Army I determined to go into the Portland cement business. Edison, His Life and Inventions Eat it, and take a good long drink of glue after it, and a spoonful of Portland cement. Literary Lapses Sufficient small boulders in old walls, and borrow pits and on surface of fields were available, and were used with thin Portland cement mortar. Concrete Construction Methods and Costs His two years in the State College had opened his eyes to modern methods of farming and the use of Portland cement for farm buildings, and he wanted a chance to try them out. Hidden Treasure The trucks which had done the mischief—there were afterwards shown to be six of them, together with two guards' vans—appeared to have been laden with bags of Portland cement. The Beetle Excavate all the decayed wood with a chisel or gouge or whatever cutting tool may work well and fill the cavity with Portland cement in such a way as to exclude moisture. One Thousand Questions in California Agriculture Answered The show was being pulled off in a big open place among the trees, with great fires burning and the snow moccasin-packed as hard as Portland cement. The God of His Fathers: Tales of the Klondyke The constructing engineer and contractor recognize only three varieties: Portland cement, natural cement and slag or puzzolan cement. Concrete Construction Methods and Costs Portland cement to 1 cu. yd. of gravel; old iron was used for reinforcement. Concrete Construction Methods and Costs The cost of the Portland cement concrete was likewise cheapened by increasing the amount of aggregates. Concrete Construction Methods and Costs Then add 2 gallons of water, and sprinkle and stir in 2 pounds of Portland cement. One Thousand Questions in California Agriculture Answered The cost of the walls was further cheapened by using Utica cement in the lower steps of the wall, with 2 ft. of Portland cement concrete on the face. Concrete Construction Methods and Costs All concrete used in engineering work is made of either Portland, natural or slag cement, and the great bulk of all concrete is made of Portland cement. Concrete Construction Methods and Costs A mixture of 1 part Portland cement and 1 part plaster of Paris, made wet, was then poured around the pattern until the box was filled. Concrete Construction Methods and Costs A mixture of 1 part Portland cement and 3 parts sand was then poured into the mold and allowed to harden. Concrete Construction Methods and Costs One gallon buttermilk, 3 pounds of Portland cement, and sufficient coloring matter to give the desired shade. One Thousand Questions in California Agriculture Answered The concrete was a 1-6 mixture of Portland cement and sandy gravel. Concrete Construction Methods and Costs The number of cubic feet of packed Portland cement in a barrel ranges from 3 to 3½. Concrete Construction Methods and Costs Stettin cement is a Portland cement made by grinding a clinker which has been "impregnated" with substances which impart waterproofing properties to the ground product. Concrete Construction Methods and Costs The materials used for the block were Sandusky Portland cement and ¾-in. bank gravel well balanced from fine to coarse. Concrete Construction Methods and Costs The concrete was a 1-2-4 Portland cement, sand and broken stone mixture, mixed by hand on a movable platform. Concrete Construction Methods and Costs Thorough mixing of the compound with the cement is of the utmost importance, otherwise none but the ordinary precautions in the use of Portland cement is necessary. Concrete Construction Methods and Costs The body of the concrete was a 1-3-5 Portland cement, beach sand and broken trap rock mixture. Concrete Construction Methods and Costs Directions for making waterproofing mortar are: To 100 lbs. of Portland cement add 2 to 2½ lbs. of compound and 200 lbs. of clean and sharp sand and mix the materials dry and very thoroughly. Concrete Construction Methods and Costs A 1-3-7 Portland cement concrete is used, the broken stone ranging from ¼ in. to 3 ins. in size, and it is well tamped. Concrete Construction Methods and Costs English Portland cement was used and the concrete mixture was about 4 parts mortar to 5 parts broken stone—a very rich mixture. Concrete Construction Methods and Costs The lining of Portland cement mortar was first laid on the lagging. Concrete Construction Methods and Costs The concrete was Portland cement, sand, gravel and broken stone. Concrete Construction Methods and Costs |
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