To provide a construction condition determining method for a soil cement improved body capable of determining proper soil cement improved body construction conditions easily, speedily, and accurately and constructing the proper soil cement improved body in a ground improving construction method.
At least either of excavation speed of a rod provided with a digging blade, a stirring blade, and a solidifying agent liquid discharge port and addition amount of solidifying agent is changed to construct a soil cement column as a test in the ground for construction, a sample which is not hardened yet is sampled from the soil cement column, the sampled sample is observed visually to confirm a degree of mixture of the solidifying agent and ground soil, the sample is cured by promoting it to estimate compressing strength in 28 days after at least one day, and these results of observation and the results of estimated strength in 28 day are comprehensively judged to determine soil cement column construction conditions satisfying the required strength.
OTA KAZUYOSHI
MURAYAMA ATSUSHI
SOMA TOMIO
YAMANE TOSHIAKI
KAZEHARI YUJI
