To provide a liquefaction preventive construction method for improving permeation of a grout material into the ground by crushing cement particulates included in the grout material furthermore and reducing cost and time required by the whole process without generating waste grout material having difficulty in its permeation into the ground.
In this liquefaction preventive construction method, the slurry grout material G1 containing cement particles having average particle diameter of 6 m or more and 10 m or less is jetted through an injection nozzle 5a of a nozzle member 5 by predetermined pressure in the inside of a crusher 3 to crush the cement particles by performing the procedures for letting them collide against a pressure receiving part 6a of a pressure receiving member 6 and crushing them by the required number of times and generate such grout material G2 that has difficulty in its permeation into the ground and has no cement coarse particles left, and the grout material is poured and permeated into the ground through an internal pipe and an external pipe inserted into the ground while the cement particles in the grout material are not classified.
ONO YASUTOSHI
MORI KENZO
SUGIMURA MASANORI
SASADA TAKUJI
TAIYO KISO KOGYO KK
TEKKEN CONSTR CO
TOA HARBOR WORKS CO LTD
TOYO CONSTRUCTION
| JP2006274646A | 2006-10-12 | |||
| JP2002294685A | 2002-10-09 | |||
| JP2006257809A | 2006-09-28 | |||
| JPS5733613A | 1982-02-23 |
Takashi Noguchi
Kazuhiko Saishita