| 摘要 |
PROBLEM TO BE SOLVED: To obtain a quick setting composition capable of being instantaneously exothermically hardened and obtaing initial and long term strength by adding water into a powdery mixture obtained by adding a specific quantity of each lithium hydroxide and quick lime to a cement blended material consisting of calcium aluminate and an inorganic aggregate and kneading them thereby forming the composition. SOLUTION: This quick setting composition is formed by adding water the powdery mixture obtained by adding 0.2-1.0 wt.% lithium hydroxide and 2-10 wt.% quick lime to the cement blended material consisting of calcium aluminate and the inorganic aggregate, which is used in a ratio of 1:(1-2.5) to calcium aluminate and is at least one or more of silica sand, gravel, a heavy calcium carbonate and the like and kneading them. If necessary, 1-4 wt.% thermoplastic powdery resin, preferably a resin obtained by spray drying an emulsion of one or more copolymers selected from an ethylene-vinyl acetate-, an ethylene- vinyl acetate-vinyl chloride ternary-, an ethylene-vinyl acetate-acrylic ternary-, a vinyl acetate-acrylic-copolymer containing acetate group as a hydrophilic group and the like is added into the powdery mixture. |
