CLAY-BEARING MANUFACTURED SANDS FOR HYDRATABLE CEMENTITIOUS COMPOSITIONS,申请号WO2011US56585-传众专利搜索

CLAY-BEARING MANUFACTURED SANDS FOR HYDRATABLE CEMENTITIOUS COMPOSITIONS

申请公布号：WO2012054403(A1)

申请号：WO2011US56585

申请日期：2011.10.17

申请公布日期：2012.04.26

申请人：

W. R. GRACE & CO.-CONN.;KYRIAZIS, ARTHUR;PERRY, BRUCE;KOEHLER, ERIC;BABLOUZIAN, LEON

发明人：KYRIAZIS, ARTHUR;PERRY, BRUCE;KOEHLER, ERIC;BABLOUZIAN, LEON

分类号：C04B7/36

主分类号：C04B7/36

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.