PERFORMANCE INVESTIGATION OF HOT MIX ASPHALT USING CLOTH WASTE AS BITUMEN MODIFIER

Abstract

In current era where development is on peak in every field, sustainability is the main point of consideration in infrastructure where in pavement construction sustainability and durability are the main goals. Modification of bitumen with cheap waste material from different sources is concerned with sustainability, while mechanical properties like rutting resistance, resilient modulus etc. are performance parameters which are associated with durability. Numerous studies were performed on bitumen modifications using different wastes, but this study is a pioneer approach towards using Polyester (PET) and Acrylic (AC) cloth waste in HMA as bitumen modifier. This research work evaluates the rutting resistance, resilient modulus moisture susceptibility properties of cloth modified HMA mixtures. Different mixes were designed for Marshall Test using varying ratios (0.1%, 0.25%, 0.5%, 0.75%, 0.9% and 1%) of cloth waste on optimum bitumen content and highest optimum value of 0.75% was selected. For the evaluation of rutting resistance double wheel tracker test was performed, where indirect tension test was conducted to find the resilient modulus and for determination of resistance to water damage TSR test was performed in the laboratory. The rutting resistance and resilient modulus was improved with cloth addition and the resistance to moisture damage was slightly decreased this is because of a little increase in air voids. Furthermore, along with other advantages like sustainability and better performance properties, cloth modification was also found to be cost-effective for pavement construction.