Performance of Crusher Dust in High Plastic Gravel Soils As Road Construction Material

Abstract

The performance of Flexible Pavement depends on the functions of the component layers especially Sub-base layers. Generally Sub-base layers are made up of natural soils like Gravels. Frequently gravel soils composed of high amount of fines which causes plasticity characteristics with adsorption of moisture under heavy loads and repeated traffic. Excess deformation leading several failure which require huge investment of money for their repairs. To reduce the excess deformation of the gravel soils and to increase the life period of the pavement there is a need to arrest their plastic characteristics and stabilization is one such techniques to improve the gravel soils by addition of industrial wastes. In this connection Crusher Dust has been selected as a Stabilizer to improve their qualities. Various percentage of Crusher Dust was added to gravel soil and tests like Plasticity, Compaction and Strength tests were conducted. By the addition of Crusher Dust Plasticity Characteristics were reduced and CBR values were improved. Addition of 25% of Crusher Dust make the mixes low-plastic and 35% of Crusher Dust make the mixes non-plastic, where high CBR values attained. Hence from the test results it is identified that addition of 25%-35% of Crusher Dust make the gravel soils meet the specification of MORTH as a sub-base material.