| 摘要 |
PURPOSE: Provided are a grout injecting method and a grout injecting material which can prevent segregation, has fluidity and viscosity for retaining good filled-up properties, is low in bleeding, and exhibits sufficient strength without loss of hardening ability. CONSTITUTION: In the grout injecting method, cement suspension containing about 200-500 kg cement per 1 m¬3 grout and basic aluminum sulfate solution are mixed as main materials and injected into a gap or a cavity, such that (a) the basicity of aluminum sulfate is equal to 2 or more and that (b) the following formula is satisfied: (cement weight/100) ÷ {alumina weight in aluminum sulfate/(basicity of aluminum sulfate)1/2} >= 1.33. As a result, flowable or plastic grout is obtained.
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