2022 Volume 78 Issue 2 Pages I_601-I_606
It has been clarified that calcium in cement-treated soil is leached by magnesium salts contained in seawater, and the soil characteristics are changed. In this study, unconfined compression test and content analysis were carried out on cement-treated clay with different stabilizer content and curing time that were deteriorated by immersion in Mg solution, and changes in strength characteristics and their mechanisms were discussed. As a result, it was shown that the strength of the deteriorated cement-treated clay was significantly reduced regardless of the initial conditions. The strength of the deteriorated cement-treated soil depends on the amount of cement and the curing time, and the strength after deterioration is proportional to the strength before immersion in Mg solution. The decrease in strength was caused by the transfer of calcium silicate hydrate to magnesium silicate hydrate, which has a relatively low binding force.
