Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 10, Issue 1, 2008; Page No.(69-74)

USE OF LIME-CEMENT STABILIZED FLYASH LAYER AS SUBBASE COURSE IN FLEXIBLE PAVEMENT CONSTRUCTION ON DIFFERENT SUBGRADES

M. AWN KUMAR AND G.V.R. PRASADA RAJU

Abstract

Expansive clay is a primary source of heave induced structural distress. Expansive soils are a major geologic hazard and cause extensive damage world wide every year. Many research organizations are working on waste materials concerning the feasibility and environmental suitability. Flyash, a waste byproduct from coal-burning in thermal power stations is abundant in India causing severe health, environmental and disposal problems. It is the need of the hour to utilize the waste materials effectively with technical development in each field. Attempts are made to investigate the stabilization process with model test tracks over expansive sub-grade. Cyclic plate load tests were carried out on the tracks with chemicals like lime and cement introduced in flyash sub-base laid on expansive sub-grade. Test results show that maximum load carrying capacity is obtained for stabilised flyash sub-base compared to untreated flyash sub-base. consuming several thousands hectares of valuable land for its disposal causing severe health and _ lcinah and Miiri-hv. 199S:

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