EFFECT OF WETTING-DRYING CYCLES ON VOLUMETRIC STABILITY OF CLAYEY SOIL STABILIZED WITH LIME AND PERLITE

Abstract

 

In this study, which is about the stabilization of the clayey soils, natural soil is mixed with 6% lime (optimum lime ratio) and 0%, 5%, 10%, 15%, 20%, 25%, 30% perlite. Perlite was used in this study in natural and fine grained form, separately. The test specimens prepared for the wetting-drying period were cured in the desiccator for 28 days. After curing, the test specimens were subjected to 12 wetting-drying periods according to ASTM D 559. In this study based on volumetric stability, it was observed that the natural soil sample could not maintain its volumetric integrity on the 2^nd day and dispersed. According to the durability conditions required in lime, cement, pozzolana-lime and pozzolana-cement-lime mixtures, the maximum allowable loss in sample weight at the end of 12 wetting-drying periods is between 6-14%. As a result of this study, it was seen that SLP2 samples were found to provide durability conditions against 12 wetting-drying periods.

Keywords

• soil stabilization,wetting-drying period,lime,perlite,fineness effect

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