Engineering Properties of Sma Mixtures/Polymer/Rgp Blends

In this research, the efficiency of recycled glass powder (rgp) is evaluated for improvement of polymer-modifiedbitumen and asphalt mixture performance. an extensive laboratory programm was undertaken for polymer-modifiedbitumen including crumb rubber (cr), styrene butadiene styrene (sbs) and styrene butadiene rubber (sbr).rheological and mechanical properties of modified bitumen samples such as penetration index (pi), and also asphaltmixture performance indices including marshall stability, indirect tensile strength (its), compressive strength andindirect tensile stiffness modulus (itsm) were investigated. the results showed that application of rgp-cr modifierhad not only positive impact on the efficiency of bitumen and asphalt, but also made more improvement in their engineeringproperties. moreover, modification using 5% cr and 5% rgp in asphalt mixtures resulted in the best overallperformance. moreover, from environmental point of view, application of rgp in asphalt mixtures is considered tobe beneficial since it prevents accumulation of waste glass in the natural environment.