Effects of Emission-Reducing Measures on Performance of High Performance Stone Mastic Asphalt

In this study, measures to reduce emissions on the asphalt pavement are investigated. For this purpose, several high performance Stone Mastic Asphalts (SMA_HP) with different viscosity reduced modified binders were produced and investigated with regard to their performance characteristics at high, medium and low service temperatures. The objective of this study is to evaluate and compare different temperature reduced asphalts in terms of performance properties. Stiffness modules, Thermal Stress Restrained Specimen Test and cyclic compression test were performed to determine the impact of the reduction of mixing and compaction temperatures on the performance properties of asphalt. Conventional (softening point ring and ball and penetration) and performance oriented (DSR and BBR) tests were also performed on virgin, RTFOT and PAV aged bitumen. The mixing temperature of SMA_HP was 160 °C and the compaction temperature of specimen were 145 °C and 130 °C. The gained test results show that it is possible to reduce the mixing temperature by up to 30 °C without significantly affecting the performance properties of SMA_HP which can be used for industrial pavement areas, roundabouts and bus lanes.