地盤改良(1)

[III-207] Particle refinement in silica fine particle injection

〇Koichi Nagao¹, Suemasa Naoaki², Moue Takuya², Tashiro Satoshi², Sasaki Takamitsu³ (1.SATO KOGYO CO.,LTD., 2.Tokyo City University, 3.Kyokado Engineering Co.,Ltd.)

Keywords:Soil liquefaction countermeasures, Amorphous silica, White carbon, Refinement

The purpose of this study is to use non-cement silica and calcium hydroxide as the fine particle material and to increase the strength by increasing the density and solidification of the ground. The silica fine particles used have an average particle size of about 20 micrometers, and it is necessary to make the fine particles fine in order to improve the permeation performance and achieve a homogeneous improvement. Then, high pressure grinding of silica fine particles was performed to confirm the penetration performance.