Cement compositions containing self-setting pozzolans

Details Cement compositions containing self-setting pozzolans Cement compositions containing self-setting pozzolans

1980-10-29

1982-02-02

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 90, 106 97, 106 98, 106DIG1, C04B 702

Patent

active

043137636

ABSTRACT:
A cement composition comprising cement, a self-setting pozzolan material, fine aggregate, air, water, at least one alkali metal constituent selected from the group consisting of sodium, potassium, and lithium ions, and at least one anionic constituent which is soluble in water and forms a calcium salt which is also water soluble, and a water soluble oxide of boron compound wherein the alkali metal constituent is present in an amount up to approximately 4.0 percent by weight, in terms of the equivalent weight of sodium ions, of the pozzolan material, the anionic constituent is present in an amount up to approximately 6.0 percent by weight, in terms of the equivalent weight of chloride ions, of the pozzolan material; the water soluble oxide of boron compound is present in the range of about 0.01 to 2.0 percent, in terms of the equivalent weight of borate ions (BO.sub.3.sup..ident.), by weight of the pozzolan material; the pozzolan material being self-setting; and the cement composition is further characterized by: (a) having a solid volume ratio of cement to the pozzolan material within the range of approximately 0.05 to 2.0; (b) having a ratio of the volume of paste (pozzolan, cement, air and water) to the solid volume of sand within the range of approximately 0.75 to 2.5; and (c) having a ratio of the solid volume of cement to the volume of mortar less than about 0.19.

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