| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide the injection material capable of securing good injectability and good chargeability over a wide region ranging from a low injection material ratio to a high injection material ratio and capable of exhibiting excellent performances for injecting the injection material into concrete structure cracks and grounds. SOLUTION: This cement-based injection material is used as a slurry containing water in an amount of 40-1000 wt.% based on the injection material and further containing a high performance water-reducing agent in an amount of up to 3.0 wt.% converted into solid content, and is produced by sphering the mixture of (a) Portland cement clinker particles, (b) blast furnace slag particles and (c) gypsum particles by the use of mechanical energy. The cement- based injection material is used as the slurry, and comprises (a') portland cement clinker particles preliminarily sphered by a mechanical method or a thermal melting method, the component (b) and the component (c). Therein, the components (a) or (a'), (b) and (c) are used in amounts of 30-75 pts.wt., 70-25 pts.wt. and 0-10 pts.wt., respectively, wherein the total amount of the components (a) or (a'), (b) and (c) is 100 pts.wt.</p> |
