Determination of Optimum Lime Content for Organic Expansive Clays

Abstract

This paper reports on a new method for determination of the optimum lime content for stabilisation of volcanic expansive clays. The suitability of past methods such as Eades and Grim is also discussed. In this study, Braybrook (West Melbourne, Australia) volcanic expansive clay was stabilized using hydrated lime. Physical properties of untreated samples and those treated with 2, 3, 4, 6, 8, and 10 percentages of lime were obtained. Results of the Loss of Ignition test indicate that some organic material was present in the studied clay. PH concentration of each mixture was determined at different curing periods (1.5hr, 7, 28, and 57 days). In addition, a range of tests such as Atterberg limit..