| 摘要 |
Polyisocyanate composition for concrete impregnation has an enhanced penetrating power for 100 weight parts of polyisocyanate it contains 0.1-5 weight parts of salt of earth metal soluble in polyisocyanate or organic dissolvent, such as calcium chloride, magnesium chloride, barium chloride, calcium acetate, calcium oleate, magnesium oleate or barium oleate. A method for impregnation of concrete comprises application of this polyisocyanate composition on the concrete surface.
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