SLURRY FOR GROUND IMPROVING WORK, IMPROVED GROUND FORMED BY USING THE SLURRY, AND DISPERSANT FOR SLURRY FOR GROUND IMPROVING WORK

摘要

PPROBLEM TO BE SOLVED: To provide a slurry for a ground improving work which can promote the effective utilization of incineration ash, especially, highly filled coal ash; to provide an improved ground formed by using the slurry; and to provide a dispersant for the slurry. PSOLUTION: The slurry for a ground improving work comprises 100 pts. mass (P) hydraulic inorganic powder, 50 to 100 pts. mass (F) incineration ash, 0.03 to 1.0 pts. mass (PC) polycarboxylic acid dispersant, and 60 to 140 pts. mass (W) water, the (W)/[(P)+(F)] ratio by mass being at least 0.4. The polycarboxylic acid dispersant comprises (A) a copolymer formed from 10 to 95 mol% (i) polyalkylene glycol mono(meth)acrylate monomer, 5 to 90 mol% (ii) (meth)acrylic acid monomer, and 0 to 50 mol% (iii) monomer copolymerizable therewith and/or (B) a salt thereof. PCOPYRIGHT: (C)2004,JPO&NCIPI