Strength Property of Silicate-Grouted Sand

Due to development of injection technique and grouting materials, injection zone of grout became more homogeneous than before. Therefore, it has been possible for designing to utilize theoretical soil mechanics insteed of a judgement on the basis of experience. In addition, the advance of computer results in easy mathematic analyses. Accordingly, it is necessary to have the unifieded failure criterion in the region of tension and compression. For that reason, in this study, the strength properties of grouted sand were examined. As a result, criterion of failure was explained with octahedral stress. This failure criterion is also useful to evaluate the efficiency of injection.