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Study on coated over fired brick aggregate as an alternative material for Asphalt Pavement

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Document pages: 8 pages

Abstract: In India, there are many places where natural stone aggregate can not be used in construction projects. Film coated obba solves the problem of stone aggregate shortage to a certain extent. The engineer is always encouraged to use locally available materials. The purpose of this survey is to evaluate plastic coated obba as an alternative material for asphalt road construction. The crushed waste plastics and obba are mixed in different proportions, which are 0.38, 0.42, 0.46, 0.50, 0.54 and 0.60 of the weight of brick aggregate respectively. Marshall mix design method is adopted to determine the optimum asphalt content of this kind of asphalt concrete mix prepared by plastic coating obba. Bulk density, Marshall stability, flow, Marshall quotient, its, TSR, peel, fatigue life and Dformations have been determined accordingly. Marshall Stability value of 0.54 percent of plastic mix is comparatively higher than the other mixes except 0.60 percent of plastic mix. Test results are within the prescribed limit for 0.54 percent of plastic mix. There is a significant reduction in rutting characteristics of the same plastic mix. The fatigue life of the mix is also significantly higher. Thus plastic coated OBBA is found suitable in construction of bituminous concrete road.

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