发明名称 |
Process for spraying concrete or mortar |
摘要 |
A process for spraying concrete or mortar, by a dry route or by a wet route, in order to produce on a surface a layer of concrete or of mortar. Just before or at the time of spraying, an aqueous suspension (A) of silica and of an aluminum compound chosen from aluminum sulphate, basic aluminum sulphates, alums and mixtures thereof is added to the concrete or mortar. The aqueous suspension (A) has a pH lower than 4, a solids content of between 10 and 50% by weight, and, after a period at rest of 48 hours, is in the form of a gel which is reversible under low shear. The aqueous suspension (A) is effective for increasing the thickness of the sprayed layer and reducing rebound of the concrete or mortar sprayed onto the surface.
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申请公布号 |
US5895688(A) |
申请公布日期 |
1999.04.20 |
申请号 |
US19960626346 |
申请日期 |
1996.04.02 |
申请人 |
RHONE-POULENC CHIMIE;BOUYGUES |
发明人 |
BERTONCINI, ANDRE;DUGAT, JEROME;FROUIN, LAURENT;JAQUIER, JEAN-LUC;PRAT, EVELYNE |
分类号 |
E04F13/02;B05B7/02;B28B1/32;B28C7/04;C04B14/04;C04B22/06;C04B22/08;C04B22/14;C04B28/02;C04B40/00;E04G21/02;(IPC1-7):B05D1/02 |
主分类号 |
E04F13/02 |
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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