EXPERIMENTAL INVESTIGATION ON SILTY SAND STABILIZED WITH FLYASH
Harish G R
Assistant Professor, Department of Civil Engineering, New Horizon College of Engineering, Bengaluru , IN
Keywords: Subgrade, silty sand, class-C fly ash, unconfined compressive strength, CBR
Abstract
Subgrade is an important component in the pavement structure. It takes all the self-load of the pavement and traffic load and transfers the load over a larger area. The performance and durability of pavement also depends on type of subgrade soil and its engineering properties. During construction we come across different types of soil among that silty sand is one of the problematic soil. Under such unavoidable situations, improving the mechanical properties of the soil is very much essential. Stabilization is one of the methods of ground improvement techniques. It this present study stabilization of silty sand has been carries out using class-C fly ash. Addition of fly ash resulted in increase in dry unit weight. The unconfined compressive strength of class-C fly ash treated silty sand was found to be increased with % of class-C fly ash and curing period and also the substantial increase in CBR value has been observed.
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