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

Year 2017, Volume: 7 Issue: 2, 207 - 218, 30.12.2017

Fatih Yılmaz , Duygu Fidan

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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