Abstract
Cement treated soil is used as a countermeasure for poor ground. But, cement treated soil deteriorate by calcium leaching because of exposing seawater. This study considered a technology of reducing deterioration of cement treated soil by using microbial function. This microbial function is urease. The urease is a function to hydrolyze urea. Authors tested seawater exposure tests using 2 types of the urease-producing bacteriums of Sporosarcina aquimarina and Bacillius pasteurii. The purpose of this tests are checking effect of reducing deterioration of cement treated soil by the urease-producing bacteriums.
In addition, We tested seawater exposure tests 2 types of conditions of temperature 20°C is used for exposure tests, and 30°C is a temperature that is suitable for the growth of bacteriums, the purpose of this tests are checking relation temperature and deterioration speed. The main outcomes are as follows: 1) 2 types of the urease-producing bacteriums have an effect of reducing deterioration 2) 2 types of condition of temperature have relation to deterioration speed.
