Abstract:

Differences in compression index (Cc) and swelling index (Cs) of remoulded soft clay in Shanghai measured by different test methods are studied. The tests include isotropic compression test, K0 test and one-dimensional compression test. Differences in compression index are compared based on the results of three isotropic compression tests, two K0 tests, and three one-dimensional compression tests. And differences in swelling index are also compared based on the results of one-dimensional compression tests and isotropic compression-unloading-and-reloading tests. Variation in K0 due to the change of σv is identified from K0 tests, and the relationship between K0 and over consolidation ratio (OCR) is also given. The relationship between Cs and OCR is studied using the results of the three different kinds of tests. Results of these tests are a basis of construction of constitutive models of remoulded soft clay in Shanghai.

Key words: remoulded soft clay in Shanghai; isotropic compression tests; K0 test; compression index; swelling index; over consolidation ratio