Abstract
Abstract: In India there are different types of soils, and the most likely present soil is clay. The flexible pavement consists of different layers such as embankment, subgrade, GSB, WMM, DBM and BC. Sub grade is the layer which acts as the foundation for pavement. In order to use the cut and fill principle, available nearby lands are selected as the borrow area for making sub grade. In this situation, the soil may not be suitable for subgrade construction. Keeping this in view stabilization of weak soil in situ may be done with suitable stabilizers to save the construction cost considerably. In the present investigation agricultural waste materials like Rice Husk Ash (RHA) which is mixed with soil to study improvement of weak sub grade in terms of compaction and strength characteristics.
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