| 摘要 |
PCT No. PCT/NL94/00017 Sec. 371 Date Nov. 17, 1995 Sec. 102(e) Date Nov. 17, 1995 PCT Filed Jan. 25, 1994 PCT Pub. No. WO94/18284 PCT Pub. Date Aug. 18, 1994A dry mixture of (a) powdered or ground smectite and/or a smectite-containing natural rock, wherein the smectite is in an inactive state, (b) 1-10% by weight of a water-soluble polymer and (c) 0.8-6.0% by weight of a powdered activating agent can be combined with soil and water to provide a gel which is a barrier composition. The mixture may additionally contain a diluting agent, so as to form a dry blend, where the blend may likewise be combined with soil and water to provide a gel which is a barrier composition. The blend may be used to provide for water-tight insulation of vasins, damps and other objects exposed to damaging effects of water, and may also be used as a sealing for deponies, as a protecting layer for articles exposed to acidic liquids, and as a filling agent for cavities and cracks on articles exposed to water. |
