Hydraulic composition
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsTsutomu Yamakawa, Hidekazu Konishi
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Abstract
A hydraulic composition comprising an AE agent, water-soluble cellulose ether, defoamer, cement, water, and aggregate is provided. The AE agent contains a fatty acid-based surfactant consisting of a fatty acid, alkali metal salt, lower alkylamine salt or lower alkanolamine salt thereof and a nonionic surfactant consisting of a polyoxyethylene phenyl ether. The hydraulic composition has frost damage resistance and experiences little bleeding.
Claims6
A hydraulic composition comprising at least an AE agent, a water-soluble cellulose ether, a defoamer, cement, water, and an aggregate, the AE agent comprising a fatty acid-based surfactant consisting of a fatty acid, an alkali metal salt, lower alkylamine salt or lower alkanolamine salt thereof and a nonionic surfactant consisting of a polyoxyethylene phenyl ether,
- said fatty acid having the general formula (1):
- wherein R1 is a C12-C24 alkyl or alkenyl group,
- said polyoxyethylene phenyl ether having the general formula (2):
- wherein R2 is a C8 or C9 alkyl group and n is an integer of 1 to 50, and said defoamer comprising one or more selected from the group consisting of oxyalkylene, silicone, alcohol, mineral oil, fatty acid, and fatty acid ester-based defoamers, with the proviso that said oxyalkylene defoamer does not include (poly)oxyalkylene (alkyl) aryl ethers.
Dependencies are inferred from the claim text.