Collapse Prediction Using Static Compaction Curves for Untreated and Treated Basaltic Expansive Clays

Abstract

This paper presents a new method in assessing collapse potential of an unsaturated compacted expansive clay as well as same expansive clay stabilized with lime. The widely used conventional compaction curves form the basis of a framework for such an assessment. The studied expansive clay was a residual soil derived from weathered Quaternary Basalt deposits located in the Victoria, Australia. For treated specimens, the optimum lime content was determined based on swell potential reduction. Static compaction technique was used to establish the compaction curves (virgin compaction surface) for untreated and lime treated soils. Different state paths were applied on both soils to investigate coll..