发明名称 |
Cementitious composition and cementitious product of high flexural strength. |
摘要 |
<p>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 hydrolysed poly (vinyi acetate). The cernenti- tious product may have a flexural strength in excess of 100 MPa.</p> |
申请公布号 |
EP0055035(A1) |
申请公布日期 |
1982.06.30 |
申请号 |
EP19810305630 |
申请日期 |
1981.11.27 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES PLC |
发明人 |
BIRCHALL, JAMES DEREK;HOWARD, ANTHONY JAMES;KENDALL, KEVIN;RAISTRICK, JAMES HUGH |
分类号 |
C04B7/345;C04B24/26;C04B40/00;(IPC1-7):04B7/00;04B13/00 |
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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