Abstract
In order to investigate influence of fabric of kaolin clay on secondary consolidation behavior, samples were prepared which have different fabrics, that is, samples with the addition of quanties of aluminum sulfate about 0-10%. The consolidation test were caried out for these samples under various conditions. Some of the obtained results are as follows: (1) The coefficient of secondary consolidation Cα increases with increasing the average size of peds P50. This seems to suggest that the volume decrease of clay due to the compression of micro-pores in the secondary stage were predominated, owing to the number of micro-pores increases with increasing P50. (2) The elapsed time ts at which e-logt curves give straight lines is affected by Δp/p and P50. Namely, ts increases with increasing P50, and these trends are predominated when Δp/p is decreased, but, ts is not affected by Δp/p and P50 when the preconsolidation pressure is increased.
