CAVITY FILLING MATERIAL

摘要

PROBLEM TO BE SOLVED: To obtain a material improved in short age strength, long age strength and bleeding characteristics of a liquid A by mixing the liquid A prepared by blending a hardener containing a cement and a fluidized bed ash with water and a specific substance with a liquid B comprising an aqueous solution of sodium silicate and composing the material. SOLUTION: This cavity filling material is composed by mixing a liquid A prepared by blending a hardener containing cement and a fluidized bed ash, preferably containing >=40wt.% cement and >=20wt.% fluidized bed ash and/or preferably at (8:2) to (4:6) mixing weight ratio of the cement to the fluidized bed ash with water and a retarder (e.g. a gluconic acid-based retarder) and/or a thickener (e.g. bentonite) with a liquid B comprising an aqueous solution of sodium silicate. The cavity filling material is preferably composed by mixing the liquid A prepared by blending 100 pts.wt. hardener with 80-350 pts.wt. water and the retarder in an amount of <=2.0wt.% based on the hardener or an inorganic clay mineral in an amount of <=100kg based on 1m<3> or an organic thickener in an amount of <=10kg based on 1m<3> as the thickener with the liquid B at (90:10) to (60:40) volume ratio of the liquid A:liquid B.