Abstract
In order to investigate the influence of hydrogen-ion concentration exponent on shear characteristics of bentonites, direct shear tests have been performed on bentonites with different hydrogen-ion concentration exponent.
As a result, it was found that shear strength increaseswith the decrease in hydrogen-ion concentration exponent. In addition, the diffusion characteristics (cυ-value and κ-value) increase with the decrease in hydrogen-ion concentration exponent. The reason for this may be considered that different diffusion characteristics and soil structures are developed with different hydrogen-ion concentration exponent. Engineering implication of the test results is turned out in making slope stability analysis. Hydrogen-ion concentration exponent, therefore, is one of the most important factors in considering slope stability.
