Abstract
This paper presents the results of a series of long-term consolidation tests conducted on stiff clays taken from the Chek Lap Kok Formation below the new airport platform. The soil specimens were subjected to effective vertical stresses similar to those encountered in the field for duration of up to eighteen months. These tests constituted one of the longest load duration tests in Hong Kong and elsewhere. The tests in this study were specially designed to provide information on the variation of rate of secondary compression with time. This paper also presents a review on the study of secondary compression conducted by other investigators, including factors affecting secondary compression index and its determination.
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