Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 9, Issue 4, 2007; Page No.(899-906 )

ADAPTABILITY OF REINFORCED FLYASH SUBBASE IN FLEXIBLE PAVEMENT CONSTRUCTION

D. S.V. PRASAD AND G.V.R. PRASADA RAJU

Abstract

Expansive soils are so widely spread that it becomes impossible to avoid them for highway construction to keep the network structure for mobility and accessibility. These soils are prevalent as large tracts in many parts of the world. Many highway agencies, private organizations and researchers are doing extensive studies on waste materials and research projects concerning the feasibility and environmental suitability. It is necessary to utilize the waste a ffectively with technical development in each field.Attempts are made to investigate the stabilization process with model test tracks over expansive subgrade. Shear, CBR and cyclic plate load tests were carried out on the tracks with different reinforcement materials like waste plastics and waste tyre rubber introduced in flyash subbase laid on expansive subgrade. Test results show that maximum load carrying capacity associated with less value of rebound deflection is obtained for flyash reinforced subbase compared to unreinforced fly ash subbase

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