To provide a construction method for ground improvement suited for use in cases where a ground to be improved is composed of humus with high water contents where strength is difficult to achieve, or subsoil where high strength is required from a design standpoint.
A high-performance water reducing agent is added to a slurry of a high-concentration cement type improver by 2% to 5% of the improver to form a high-concentration, low-viscosity slurry of the cement type improver. The slurry is held in an injectable condition using a high-pressure injection stirring method, so that an improved body of high strength can be economically and efficiently constructed in humus with high water contents where strength is difficult to achieve, or in subsoil where high strength is required from a design standpoint.
NISHIO KYO
SUZUKI KOSUKE
MATSUDA TOMOMITSU
