| 摘要 |
A soil sealing composition suitable for reducing the permeability of soil to water contaminated with electrolyte comprises an expanding lattice clay and a water soluble or water swellable polymer having a molecular weight of at least 500,000 and that is a copolymer of 2-acrylamido-2-methyl propane sulphonic acid, or certain other ethylenically unsaturated sulphonic acids, together with other ethylenically unsaturated monomer, preferably a blend of acrylamide and acrylic acid. |
