公开(公告)号：US4988238A

公开(公告)日：1991-01-29

申请号：US429945

申请日：1989-10-31

申请人： Tamas Szekely ,  Gabor Nagy ,  Andras Danko ,  Janos Szepvolgyi ,  Andras Gal ,  Oszkar Libor

发明人： Tamas Szekely ,  Gabor Nagy ,  Andras Danko ,  Janos Szepvolgyi ,  Andras Gal ,  Oszkar Libor

IPC分类号： C09K17/12 ,  C09K17/46

CPC分类号： C09K17/12 ,  C09K17/46

摘要： A method is disclosed for improving the strength and impermeability of soils or engineering structures, which comprises the steps of:(a) applying to the site of the soil or of the engineering structure, an alkaline water glass solution comprising water glass in an amount of 15 to 40% by weight, calculated as dry substance;(b) allowing a time period to pass sufficient to permit the alkali present in the water glass solution to move by diffusion;(c) applying to the same site as in step (a), a silicic acid sol comprising SiO.sub.2 in an amount of 5 to 50% by weight calculated as dry substance, and an organic dispersion medium in which 10 to 100% by volume of the dispersion medium consists of a water-miscible organic solvent capable of reacting with the alkali content of the water glass solution applied during step (a), thereby gellifying the water glass so that the reaction product of the water-miscible organic solvent and the alkali content of the water glass is trapped within the gelled water glass; and(d) allowing a time period to pass sufficient to permit the respective organic dispersion medium present in the silicic acid sol to move by diffusion, so that gellification of the water glass takes place evenly when mixing of the water glass solution applied during step (a) and the silicic acid sol applied during step (c) to the soils or to the engineering structures takes place to effect a plasticizing effect on the resulting water glass gel.

摘要翻译： 公开了一种用于改善土壤或工程结构的强度和不渗透性的方法，其包括以下步骤：（a）向土壤或工程结构的位置施加包含水玻璃的碱性水玻璃溶液，其量为 15〜40重量％，以干物质计算; （b）允许时间段通过足以允许水玻璃溶液中存在的碱通过扩散而移动; （c）在与步骤（a）相同的部位施用含有按干物质计5〜50重量％SiO 2的硅酸溶胶，以及有机分散介质，其中10〜100体积％ 分散介质由与步骤（a）中施加的水玻璃溶液的碱含量反应的水混溶性有机溶剂组成，从而将水玻璃凝胶化，使水溶性有机溶剂与碱的反应产物 水玻璃的含量被凝固在凝胶水玻璃内; 和（d）允许一段时间通过足以使存在于硅酸溶胶中的各有机分散介质通过扩散移动，使得在步骤期间施加的水玻璃溶液的混合时水玻璃的胶凝化发生均匀（ a）和在步骤（c）中施加的硅酸溶胶施加到土壤或工程结构上以对所得水玻璃凝胶进行增塑作用。