发明名称 |
Cement composition and product |
摘要 |
A cementitious composition comprising hydraulic cement, not more than 25% of water by weight of the composition, and water soluble or dispersible (co)polymer in a proportion of 1 to 15% by weight of the hydraulic cement in the composition, the cement and (co)polymer being selected such that a test composition comprising 100 parts by weight of cement, 5 parts by weight of (co)polymer, and 16 parts by weight of water when extruded in a capillary rheometer undergoes an increase of at least 25% in shear stress when a ten-fold increase in the shear rate of the test composition from the capillary of the rheometer is effected. Also a cementitious product produced by setting of the composition. The (co)polymer is preferably a partially hydrolyzed poly (vinyl acetate). The cementitious product may have a flexural strength in excess of 100 MPa.
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申请公布号 |
US4410366(A) |
申请公布日期 |
1983.10.18 |
申请号 |
US19810330585 |
申请日期 |
1981.12.14 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES PLC |
发明人 |
BIRCHALL, JAMES D.;HOWARD, ANTHONY J.;KENDALL, KEVIN;RAISTRICK, JAMES H. |
分类号 |
C04B7/345;C04B24/26;C04B40/00;(IPC1-7):C04B7/35 |
主分类号 |
C04B7/345 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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