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Topic: Hydraulic cement

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	Cement - LoveToKnow 1911
		A strong cement for alabaster and marble, which sets in a day, may be prepared by mixing 12 parts of Portland cement, 8 of fine sand and 1 of infusorial earth, and making them into a thick paste with silicate of soda; the object to be cemented need not be heated.
		A cement for Derbyshire spar and china, andc., is composed of 7 parts of rosin and i of wax, with a little plaster of Paris; a small quantity only should be applied to the surfaces to be united, for, as a general rule, the thinner the stratum of a cement, the more powerful its action.
		Cutler's cement, used for fixing knife-blades in their hafts, is made of equal parts of brick-dust and melted rosin, or of 4 parts of rosin with i each of beeswax and brick-dust.
	www.1911encyclopedia.org /Cement (6908 words)

	Portland cement: Lafarge hydraulic cement - Lafarge
		Called also hydraulic cement, Portland cement is a cement that hardens under water, it's made by heating limestone and clay in a kiln and pulverizing the result.
		Cement is an artificial hydraulic binder which binds the particles of sand and aggregates together.
		He called this new cement Portland Cement, due to the fact that in appearance and hardness, it was similar to the upper Jurassic rock found in the region of Portland, in southern England.
	www.lafarge.com /cgi-bin/lafcom/jsp/content.do?function=portland_cement&lang=en (368 words)

	High iron oxide hydraulic cement - Patent 4036657
		The cements can be produced with considerably less expenditure of energy than required for conventional Portland cements due to lower burning temperatures and reduction in the amount of calcium-oxide which requires the greatest energy input for preparation of the cements.
		The hydraulic cement composition of claim 1 wherein tetracalcium aluminoferrite is present in the form of dicalcium aluminate-dicalcium ferrite.
		Cement D1 was not well-sintered, and contained considerable proportions of a calcium silcosulfate, (C.sub.2 S).sub.2 CS, as determined by its characteristic diffraction peaks.
	www.freepatentsonline.com /4036657.html (5256 words)

	Lehigh Cement Company-Education Glossary
		Hydraulic cement, primarily used in masonry and plastering construction, consisting of a mixture of portland cement or blended hydraulic cement, and plasticizing materials (such as limestone, hydrated or hydraulic lime) together with other materials introduced to enhance one or more properties such as setting time, workability, water retention and durability.
		Hydraulic cement, primarily used in masonry construction, consisting of a mixture of portland or blended hydraulic cement and plasticizing materials (such as limestone, hydrated or hydraulic lime) together with other materials introduced to enhance one or more properties such as setting time, workability, water retention and durability.
		Hydraulic cement consisting of: (1) an intimately interground mixture of portland-cement clinker and granulated blast-furnace slag; (2) an intimate and uniform blend of portland cement and fine granulated blast furnace slag; or (3) finely ground blast furnace slag, with or without additions.
	www.lehighcement.com /Education/Lehigh-Education-Glossary.htm (5858 words)

	Encyclopedia :: encyclopedia : Cement (Site not responding. Last check: )
		Hydraulic limes, natural pozzolana and Portland cements are the more common hydraulic cements, with portland cement being the most important in construction.
		Hydraulic cement was first invented by the Egyptians, and later reinvented by the Greeks and Babylonians, who made their mortar out of lime, much harder than the Roman mortars.
		Portland cement was patented in England by Joseph Aspdin in 1824.
	www.hallencyclopedia.com /Cement (260 words)

	Hydraulic cement composition - Patent 3998773
		The invention is an improved aqueous hydraulic cement slurry which is suited for use in cementing a well, particularly a well bore which penetrates a subterranean formation which produces a petroleum fluid, e.g., oil and/or gas, and/or water.
		In these methods a hydraulic cement slurry is employed to cement a casing in place and also for cementing off permeable zones of permeable formations into which valuable materials may be lost.
		One of the desirable characteristics of an aqueous hydraulic cement slurry is that the fluid content thereof must not be readily lost to more porous medium, e.g., the geologic formation, for this causes the hydraulic cement slurry to prematurely set and thus be unsuitable in the cementing process.
	www.freepatentsonline.com /3998773.html (1195 words)

	Concrete Technology and Construction \| Cement Basics \| Portland Cement Association (PCA)
		Portland cements are hydraulic cements composed primarily of hydraulic calcium silicates.
		Blended hydraulic cements are produced by intimately and uniformly intergrinding or blending two or more types of fine materials.
		Whether it is the clinker composition, the fineness of the individual cement grains, or the amount with which it is used in the concrete, the type and proportion of cement affect both the fresh and hardened properties of concrete.
	www.cement.org /tech/cct_port_cem_prod_tech.asp (905 words)

	Hydraulic cement, water stopping cements & mortars - CGM
		A quick setting, hydraulic, cementitious, water stopping mortar and sets in 3 to 5 minutes at 70 degrees F (21 degrees C).
		A hydraulic cement formula designed to set at three (3) times the speed of ordinary quick set plug.
		A hydraulic cement formula designed to stop active leaks in concrete and masonry structures.
	www.cgmbuildingproducts.com /pd1_c.htm (79 words)

	Portland Cement
		Expansive cement, as well as expansive components, is a cement containing hydraulic calcium silicates (such as those characteristic of portland cement) that, upon being mixed with water, forms a paste, that during the early hydrating period occurring after setting, increases in volume significantly more than does portland cement paste.
		Expansive cement is used to compensate for volume decrease due to shrinkage and to induce tensile stress in reinforcement.
		Expansive cement concrete used to minimize cracking caused by drying shrinkage in concrete slabs, pavements, and structures is termed shrinkage-compensating concrete.
	www.fhwa.dot.gov /infrastructure/materialsgrp/cement.html (3169 words)

	The History of Concrete: Textual
		He used hydraulic lime to rebuild Eddystone Lighthouse in Cornwall, England which he had been commissioned to build in 1756, but had to first invent a material that would not be affected by water.
		Natural cement is limestone that naturally has the appropriate amounts of clay to make the same type of concrete as John Smeaton discovered.
		Joseph Aspdin of England invented portland cement by burning finely ground chalk with finely divided clay in a lime kiln until carbon dioxide was driven off.
	matse1.mse.uiuc.edu /~tw/concrete/hist.html (949 words)

	cement
		cement, binding material used in construction and engineering, often called hydraulic cement, typically made by heating a mixture of limestone and clay until it almost fuses and then grinding it to a fine powder.
		Modern portland cement is made by mixing substances containing lime, silica, alumina, and iron oxide and then heating the mixture until it almost fuses.
		Cement with a high aluminate content is used for fireproofing, because it is quick-setting and resistant to high temperatures; cement with a high sulfate content is used in complex castings, because it expands upon hardening, filling small spaces.
	www.factmonster.com /ce6/sci/A0811068.html (314 words)

	Slag Cement Association - Slag Cement Creates Concrete At Its Best - Frequently Asked Questions
		Slag cement improves many of the strength and durability properties of hardened concrete. Slag cement is a hydraulic binder that, like portland cement, reacts with water to form cementitious material (calcium-silicate hydrate or CSH).
		Slag cement generally improves workability, finishability and pumpability of plastic concrete. It may provide a small decrease in water demand (see SCIC #5). Slag cement will tend to increase time of initial set, which is often a benefit in warm weather. In cooler weather, accelerators, heated materials or lowering the percentage of slag more...
		The amount of slag cement added to a concrete mixture, as a percentage of cementitious material by weight, normally ranges from 20 to 80 percent. The amount for a specific project depends on several factors including application, early and later age strength requirements, durability requirements and ambient temperature to name a few. more...
	www.slagcement.org /shared/content/storyheadlines.jsp?_event=view&_id=445510_U128801__151611 (574 words)

	Welcome to UNION Web Site!
		And the importance of alumina cement that is used mainly as binder for castable refractory materials is being highlighted ever more.
		UAC -70N is widely recommended for high technology refractories such as low cement castable and ultra low cement castable.
		It is used for castable high temperature (1800¡É) and material for castable which requires durability and resistance to heat and impact.
	www.union21.co.kr /07english/e-pro1-1.php (436 words)

	Rosendale Cement Chemistry
		is hydraulic cement made from limestone that has a high clay content (argillaceous limestone).
		American natural cement was never a mixture of ingredients such as clay or other pozzolans and lime or hydraulic lime.
		Only authentic Rosendale Natural Cement from Edison Coatings, Inc. is an historically accurate replacement in kind for the restoration of natural cement buildings, structures and monuments.
	www.rosendalecement.net /html/rosendale_cement_chemistry.html (538 words)

	Concrete and paving glossary - H - dee Concrete Accessories
		The thermal energy, or heat, resulting from chemical reactions with water, as in the curing of Portland cement, concrete, or gypsum, as it cures.
		Slang for a heavy, wire, vaguely chair-shaped device used to hold steel reinforcement off the bottom of the slab during the placement of concrete.
		The chemical reaction that occurs when cement is mixed with water.
	www.deeconcrete.com /concreteglossaryh.html (384 words)

	CRB Fundamentals
		Cements are made in a wide variety of compositions and are used in many different ways The best-known cement is Portland cement, which is bound with sand and gravel to create concrete.
		In 1924, the name “Portland cement” was coined by Joseph Aspdin, a British cement maker, because of the resemblance between concrete made from his cement and Portland stone.
		Hydraulic cements are those that set and harden in water.
	www.crbtrader.com /fund/articles/cement.asp (430 words)

	Virginia Railing and Gates: Repairing a rusted railing
		As you pour the hydraulic cement into the hole, gently tap on the base of the post with a hammer to ensure the hydraulic cement settles completely into the hole.
		Hydraulic cement sets rapidly, usually setting in about 5 to 10 minutes.
		As the cement hardens, use the water hose and wire brush to remove any spills or unwanted cement.
	www.virginiarailingandgates.com /repair.asp (444 words)

	EcoSmart™ Concrete - Glossary
		a material other than water, aggregate, hydraulic cement, supplementary cementing materials, and fiber reinforcement, used as an ingredient of concrete or mortar, and added to the batch immediately before or during its mixing
		an admixture that causes an increase in the rate of hydration of the hydraulic cement, and thus shortens the time of setting, or increases the rate of strength development, or both
		the volume of air voids in cement paste, mortar, or concrete, exclusive of pore space in aggregate particles, usually expressed as a percentage of total volume of the paste, mortar, or concrete
	www.ecosmartconcrete.com /glossary.cfm (1171 words)

	Unitex - HYDRAULIC CEMENT
		Unitex HYDRAULIC CEMENT is a blend of hydraulic cement and admixtures used for plugging and stopping water or fluid leaks in concrete structures and masonry walls.
		HYDRAULIC CEMENT is a non-corrosive, non-rusting and non-shrink material.
		For sealing cracks in walls or floors, force Hydraulic Cement into the crack by starting at the area with the least amount of pressure.
	www.unitex-chemicals.com /catalog/hydraulic_cement.shtml (464 words)

	ASTM Hydraulic Cement Standards
		A newly revised cement test method, C 359, Standard Test method for Early Stiffening of Hydraulic Cement (Mortar Method), has been approved, and the document will be available in November for cement companies and testing laboratories.
		C 359 now covers hydraulic cements, not just portland cement, because of a major revision by Subcommittee C01.30 on Time of Set, a part of Committee C01 on Cement.
		Consequently, the method now enables every cement sample to be assessed with almost a full-scale available for maximum sensitivity.
	www.astm.org /SNEWS/OCTOBER_2003/hydcem_oct03.html (218 words)

	Loammi Baldwin : modified the use of hydraulic cement
		Traditionally, canal locks were made waterproof by the use of a hydraulic cement composed in part of volcanic ash.
		When the canal committee found that a similar ash was available from the Dutch West Indies it commissioned Josiah Banks, captain of the sloop Industry, to return with a cargo of forty tons of trass, or Dutch Terras as it was called.
		The accepted procedure in forming the hydraulic cement had been to mix the trass with lime and water and then to beat it for a long time - the longer the mixture was beaten the harder the cement set.
	www.geocities.com /Athens/Troy/6034/hydrcemt.html (164 words)

	6400 CC - Electro-hydraulic Cement Seat and Shank Lasting Machine \| North East Cutting Die - Portsmouth, NH
		The cement will be applied by separate programmable nozzle tracers for exact cement apply according to the different contours of shoe models.
		Cement application by means of nozzle tracers from the seat.
		This guarantees a uniform and perfect cement application for all different last models and shank rises.
	www.necuttingdie.com /presses/shoe_machines/6400_cc_electro_hydraulic_cement_seat_and_shank_lasting_machine (352 words)

	Hydraulic Cement
		I have been reading a lot on the web lately saying that the best way to patch cracks in poured concrete basement walls is to smear on or chip out the crack and install in the crack hydraulic cement.
		This is usually next to a window cut out or a beam pocket or even a string of rod holes if you have the flat kind of rod that uses several in a row.
		When someone, usually a homeowner or plumber, tries to repair a crack with hydraulic cement and it leaks all we see is a fragmented and filled crack that we can’t inject with foam.
	www.expertwaterproofing.com /html/hydraulic_cement.html (429 words)

	6400 TCC - Electro-hydraulic Cement Lasting Machine \| North East Cutting Die - Portsmouth, NH
		A further initiative in the universality of the lasting machines is the new development of machine type 6400 TCC.
		Cementing the heel and shank area and tacking the heel
		The machine is equipped for working with rid cement.
	www.necuttingdie.com /presses/shoe_machines/6400_tcc_electro_hydraulic_cement_lasting_machine (241 words)

	Cement - Products for Cement - Manufacturers, Exporters, Suppliers, Traders, Companies, Factories
		Cement Manufacturers, Exporters, Suppliers and Distributors related to Cement.
		This page is your Cement one-stop source for the competitive price and quality.
		If you are a manufacturer or supplier who want more international buyers, join EC21 for free now, and get your products listed here.
	www.ec21.com /manufacturers/Cement.html (344 words)

	Hydraulic Cement
		Summary: Hydraulic cement expands as it dries to fill cracks in concrete foundations.
		Many homeowners don't realize that ordinary Portland cement shrinks when it dries.
		This means that if you patch a crack or a hole, a very tiny leak may form after the cement dries.
	www.askthebuilder.com /B119_Hydraulic_Cement.shtml (124 words)

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