Portland cement

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Portland cement

or portland cement
A hydraulic cement made by heating a limestone and clay mixture in a kiln and pulverizing the resulting material.

[After Portland, an urban district of southern England.]

Portland cement

(Building) a cement that hardens under water and is made by heating a slurry of clay and crushed chalk or limestone to clinker in a kiln
[C19: named after the Isle of Portland, because its colour resembles that of the stone quarried there]

Port′land cement′

a type of hydraulic cement usu. made by burning a mixture of limestone and clay in a kiln.
[1815–25; after the Isle of Portland, Dorsetshire, England]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Portland cement - a cement that hardens under water; made by heating limestone and clay in a kiln and pulverizing the result
cement - a building material that is a powder made of a mixture of calcined limestone and clay; used with water and sand or gravel to make concrete and mortar
References in periodicals archive ?
CSIRO has found that, for every tonne of Portland cement manufactured, one tonne of carbon dioxide is produced.
Portland cement (PC) is a fine powder produced by grinding cement clinker.
As the fourth-largest source of mercury air emissions in the United States, Portland cement kilns should have their emissions reduced, according to a proposal from the U.
It has a potential to replace Portland cement in concrete mixture.
Concrete also announced the introduction of its EF Technology that it says "substantially" replaces traditional Portland cement with reclaimed fly ash and/or slag (left over material from coal-fired industrial plants or iron mills, respectively).
Concrete is made with Portland cement, a powdery mixture of crushed limestone and clay or shale.
will spend about $190 million to expand its portland cement manufacturing plant at Foreman.
Danish cement and minerals industry technology group FLSmidth & Co A/S said on Monday (12 December) that it had received an order for cement plant machinery from Pretoria Portland Cement in South Africa.
Permissible uses for RCA in Michigan include as aggregate within Portland cement concrete poured for curbs and gutters, sidewalks, barriers, driveways, temporary pavement, interchange ramps and shoulders.
Environmental Protection Agency has named California Portland Cement Company as an ENERGY STAR Partner of the Year for its outstanding contribution to reducing greenhouse gas emissions through leadership in energy management.
Similarly, the Portland Cement Association (PCA) governs and researches this primary active component of concrete: the white dusty powder called Portland cement.
The foundation was also recently placed under contract with the Arizona Department of Environmental Quality to develop guidelines for crumb rubber use in Portland cement concrete mixes.

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