Mortar admixtures and method of preparing same
AssigneeW.R. Grace & Co.-Conn.
InventorsMilind V. Karkare, Chia-Chih Ou, Craig T. Walloch, Ara A. Jeknavorian
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Abstract
Additive which simultaneously provides water-repellency and flexural bond strength improvement in mortar, concrete, or cement. An exemplary composition include calcium stearate and a flexural bond strength enhancing material comprising a polymer having a backbone to which are attached carboxyl cement anchoring groups. A cementious composition and method for enhancing water-repellency and flexural bond strength in a mortar are also disclosed.
Claims18
A composition for improving water repellency and flexural bond strength in mortar, comprising:
- (a) calcium stearate;
- and (b) at least one masonry bond strength enhancing material comprising a copolymer having a carbon-containing backbone to which are attached cement-anchoring members and oxyalkylene groups attached by linkages selected from the group consisting of an amide, an imide, and an ester.
A cementitious composition comprising (a) cement;
- (b) calcium stearate;
- and (c) a flexural bond strength material comprising a copolymer having a carbon-containing backbone to which are attached cement-anchoring members and oxyalkylene groups.
Method for simultaneously improving flexural bond strength and water repellency in a mortar composition, comprising:
- combining, into a mortar composition comprising a cementitious binder and sand (1) calcium stearate, and (2) at least one masonry bond strength enhancing material comprising a copolymer having a carbon-containing backbone to which are attached cement-anchoring members and oxyalkylene groups attached by linkages selected from the group consisting of amide, imide, and ester.
Dependencies are inferred from the claim text.