发明名称 |
CLAY-BEARING MANUFACTURED SANDS FOR HYDRATABLE CEMENTITIOUS COMPOSITIONS |
摘要 |
The present invention provides a method for making sand compositions wherein manufactured sand particles are pretreated with a clay-mitigating polycation and blended with natural sand particles that have washed to remove fines such that at least 90% of the natural sand particles are retained on a 75 micron sieve. Methods of the invention also involve the use of the blended pretreated sand for making concrete wherein the sand is combined with cement, a polycarboxylate type dispersant, a further amount of clay-mitigating polycation compound, and at least one hydryoxyl or hydroxyl carboxylic acid or salt compound. |
申请公布号 |
EP2630099(A4) |
申请公布日期 |
2015.12.09 |
申请号 |
EP20110834942 |
申请日期 |
2011.10.17 |
申请人 |
W. R. GRACE & CO.-CONN |
发明人 |
KYRIAZIS, ARTHUR;PERRY, BRUCE;KOEHLER, ERIC;BABLOUZIAN, LEON |
分类号 |
C04B7/36;C04B14/06;C04B20/02;C04B28/02;C04B40/00 |
主分类号 |
C04B7/36 |
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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