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harden into a solid mass. the cement is the chemically active element, or matrix; the sand and stone are the inert elements, or aggregate. ..... click the link for more information. , whiting whiting, white, powdery substance, prepared by grinding chalk or some other source of calcium carbonate. when mixed
link for more information. , putty, precipitated chalk chalk, mineral of calcium carbonate, similar in composition to limestone, but softer. it is characteristically a marine formation and sometimes occurs in great thickness; the chief constituents of these chalk deposits are the shells of minute animals...
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