 | California State Mining Bureau - 1921 - 586 стор.
...oolitic limestone of Jurassic age quarried for building purposes on Portland Isle, Dorsetshire, England. Portland cement is the product obtained by finely...produced by calcining to incipient fusion an intimate mixture of properly proportioned argillaceous and calcareous substances, with only such additions subsequent... | |
 | American Society for Testing Materials - 1920 - 868 стор.
...etc., which becomes a solid mass when the cementitious materials have hardened. 9. Portland Cement. — The product obtained by finely pulverizing clinker...argillaceous and calcareous materials, with no additions subsequent to calcination excepting water and calcined or uncalcined gypsum. Definition taken from... | |
 | 1919 - 294 стор.
...marked increase in demand. PORTLAND CEMENT. By ERNEST F. BURCHARD. RAW MATERIALS. Portland cement, a product obtained by finely pulverizing clinker produced by calcining to incipient fusion a properly proportioned mixture of calcareous and argillaceous materials, is now manufactured in 28... | |
 | United States. Bureau of Mines - 1919 - 1164 стор.
...CEMENT. DEFINITION. 1. Portland cement is the product obtained by finely pulverizing clinker pro<lu»d by calcining to incipient fusion an intimate and properly...argillaceous and calcareous materials, with no additions subsequent to calcination excepting water and calcined gypsum. CHEMICAL PROPERTIES. Chemical limits.... | |
 | 1913 - 326 стор.
...GOVERNMENT SPEClFICATION FOR PORTLAND CEMENT.• Specification. Definition. — 1. The cement shall be the product obtained by finely pulverizing clinker...produced by calcining to incipient fusion an intimate mixture of properly proportioned argillaceous and calcareous substances, with only such additions susbequent... | |
 | International Railway Congress Association - 1923 - 1262 стор.
...horizontal dimension. Plain concrete. — Concrete without metal reinforcement. Portland cement. — The product obtained by finely pulverizing clinker...argillaceous and calcareous materials, with no additions subsequent to calcination excepting water and calcined or uncalcined gypsum. Positive reinforcement.... | |
 | Geological Survey of Georgia - 1912 - 386 стор.
...GOVERNMENT SPECIFICATION FOE PORTLAND CEMENT. 1 SPECIFICATION. Definition.—1. The cement shall be the product obtained by finely pulverizing clinker...produced by calcining to incipient fusion an intimate mixture of properly proportioned argillaceous and calcareous substances, with only such additions subsequent... | |
 | 1913 - 326 стор.
...GOVERNMENT SPECIFICATION FOR PORTLAND CEMENT.* Specification. Definition. — 1. The cement shall be the product obtained by finely pulverizing clinker...produced by calcining to incipient fusion an intimate mixture of properly proportioned argillaceous and calcareous substances, with only such additions susbequent... | |
 | Colorado Geological Survey - 1913 - 426 стор.
...on for several years have given most satisfactory results. THE MATERIALS OF CEMENTS, LIMES, PLASTERS PORTLAND CEMENT is the product obtained by finely pulverizing clinker produced by burning to semi-fusion an intimate artificial mixture of finely ground calcareous and argillaceous... | |
 | Colorado Geological Survey - 1913 - 426 стор.
...on for several years have given most satisfactory results. THE MATERIALS OF CEMENTS, LIMES, PLASTERS PORTLAND CEMENT is the product obtained by finely pulverizing clinker produced by burning to semi-fusion an intimate artificial mixture of finely ground calcareous and argillaceous... | |
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Portland cement is the product obtained by finely pulverizing clinker produced by calcining to incipient fusion an intimate and properly proportioned mixture of argillaceous and calcareous materials, with no additions subsequent to calcination excepting... 
