LAUSR

Potential benefits in applying waste materials such as reclaimed asphalt pavement (RAP), and crumb rubber in road construction is already been reported in previous studies. So a critical need exists to check the suitability of such waste materials which is enormously available and is creating disposal problems in Satara district as an alternative to the exhausting conventional materials such as bitumen and aggregate partially or completely. Considering the eco-friendly disposal and cost-effective advantages by the sustainable use of waste materials such as crumb rubber and RAP, extensive laboratory and the analytical investigation is enlightened in the present investigation. The present paper discusses the results from the experimental work on the locally collected RAP material from various locations of Satara district (State Maharashtra, India) which is used as a partial replacement to conventional aggregates and enormously available crumb rubber as an alternative to bitumen. Based on the laboratory tests, the optimum crumb rubber and RAP in dense bituminous mixes as partial replacements to bitumen and aggregates respectively was found at 9% and 60%. Further, during the analytical investigation, the critical performance parameters are examined to check the effect of materials such as crumb rubber mix, RAP mix along with different combinations of hypothetical pavement sections. The values of critical parameters are incorporated in the recommended fatigue and rutting criteria to estimate the pavement life. Based on the analytical results, the design charts are proposed for the considered material combinations for various types of subgrade soils available near the Satara district.