| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide grout for use in civil engineering and building fields which uses a pozzolan reactant, the viscosity of which is not increased after wet milling, which has good injection characteristics, and which has good strength development characteristics by carrying out the wet milling until the temperature of slurry rises above 50°C. <P>SOLUTION: The grout comprises the slurry containing the wet-milled pozzolan reactant and, in addition, an alkali salt, a dispersing agent particularly a polyacrylic acid, a retardant particularly an organic acid-based retardant. The injection method comprises carrying out the wet milling until the slurry temperature rises not less than 50°C and injecting the retardant immediately after the milling. <P>COPYRIGHT: (C)2004,JPO |
