1) English invention
Found on
https://www.crosswordclues.com/clue/portland-cement
Portland cement is the most common type of cement in general use around the world, used as a basic ingredient of concrete, mortar, stucco, and most non-specialty grout. It developed from other types of hydraulic lime in England in the mid 19th century and usually originates from limestone. It is a fine powder produced by heating materials in a kil...
Found on
http://en.wikipedia.org/wiki/Portland_cement
• A cement having the color of the Portland stone of England, made by calcining an artificial mixture of carbonate of lime and clay, or sometimes certain natural limestones or chalky clays. It contains a large proportion of clay, and hardens under water.
Found on
http://thinkexist.com/dictionary/meaning/portland_cement/
A gray powder made from limestone that is mixed with sand and water to make mortar, or mixed with sand, small stones or gravel, and water to make Portland cement concrete.
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http://www.americantrails.org/
binding material in the form of a finely ground powder, usually gray, that is manufactured by burning and grinding a mixture of limestone and clay ... [11 related articles]
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http://www.britannica.com/eb/a-z/p/97
A type of cement made by burning limestone and clay; a basic ingredient in concrete.
Found on
http://www.encyclo.co.uk/local/20453
A mixture of certain minerals which when mixed with water form a gray colored paste and cure into a very hard mass.
Found on
http://www.encyclo.co.uk/local/20933
the most common form of cement available today. Grey in colour, it is reliable and achieves a hard set very rapidly. White portland cement which is softer and less hydraulic is also available.
Found on
http://www.encyclo.co.uk/local/20935
See cement. Related Words: Cement, cementitious
Found on
http://www.encyclo.co.uk/local/20938
A hydraulic cement product obtained by pulverizing and calcining a properly proportioned mixture of three minerals
Found on
http://www.encyclo.co.uk/local/22192
the cement most widely used in oilwells. It is made from raw materials such as limestone, clay or shale, and iron ore.
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http://www.encyclo.co.uk/visitor-contributions.php
Port'land ce·ment' A cement having the color of the Portland stone of England, made by calcining an artificial mixture of carbonate of lime and clay, or sometimes certain natural limestones or chalky clays. It contains a large proportion of clay, and hardens under water.
Found on
http://www.encyclo.co.uk/webster/P/131
- Cement made by heating clay and crushed limestone into a brick and then grinding to a pulverized powder state.
Found on
http://www.homebuildingmanual.com/Glossary.htm
Fine, grayish powder formed by burning limestone, clay or shale and then griding the resulting clinkers. The result is a cement which hardens under water and which is used as a base for all mortar. Portland cement is a grade of cement, not a brand
Found on
http://www.masoncontractors.org/aboutmasonry/masonryglossary/
Portland cement is the essential constituent in concrete, cement rendering and formerly in asbestos-cement sheeting. Portland cement is produced by burning limestone with clay or shale at a high temperature until it forms a clinkered mass, which is then cooled and ground into a fine powder.
Found on
http://www.probertencyclopaedia.com/browse/GP.HTM
A hydraulic cement product obtained by pulverizing and calcimining a properly proportioned mixture of three mineralslime, silica, and alumina.
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http://www.selectstone.com/architectural-resources/stone-glossary/
the product obtained by pulverizing clinker consisting essentially of hydraulic calcium silicates.
Found on
https://www.encyclo.co.uk/local/21066
A commercial product which when mixed with water alone or in combination with sand, stone, or similar materials, has the property of combining with water, slowly, to form a hard solid mass. Physically, portland cement is a finely pulverized clinker produced by burning mixtures containing lime, iron, alumina, and silica at high temperature and in de...
Found on
https://www.encyclo.co.uk/local/21122
the fine, grayish powder formed by burning limestone, clay, or shale and then grinding the resulting clinkers. The result is a cement which hardens under water and which is used as a base for all mortar. Portland cement is a grade of cement, not a brand.
Found on
https://www.encyclo.co.uk/local/22193
Cement made by heating clay and crushed limestone into a brick and then grinding to a pulverized pow
Found on
https://www.encyclo.co.uk/local/22400
Cement made by heating clay and crushed limestone into a brick and then grinding to a pulverized powder state.
Found on
https://www.homebuildingmanual.com/Glossary.htm
No exact match found.
