The behaviour of Hong Kong volcanic saprolites in one-dimensional compression

摘要

An extensive research programme focusing on the one-dimensional compression behaviour ofrnreconstituted and intact volcanic saprolites was carried out. A number of block samples, including saprolitesrnoriginating from different parent rocks or taken at different sites within a same formation, were tested. Thernintrinsic behavior of reconstituted samples indicated that some of the soils had very slow convergence to arnunique instrinsic normal compression line (ICL) and/or rather shallow slopes of compression paths. The slopernof the ICL (λ) changed with the sampling location, even if most samples belonged to the same weathering gradernand were taken at shallow depths. The relationship between λ and the amount of fines was established and therneffects of structure were studied comparing the compression tests of intact specimens to their respective ICL.rnThe extent to which these tests crossed the ICL was variable and in some cases the curves simply converged tornthe ICL, showing no effect of structure.