Performance Of Modified Asphalt And Its Mixture Sasobit Warm Mix

Most of the road works are made of hot-mix asphalt mixes HMA (Hot Mixture Asphalt)in the form of paving, HMA ingeneral should paved asphalt heated to about150℃～180℃,the asphalt mixture heated to such a high temperature, is bound to cause aging asphalt as well as energy and environmental issues, also endanger construction workers as well as around the health of the residents, in order to make up forthe lack of the HMA, warm mix asphalt mixes WMA(Warm mix asphalt) came into being, WMA asphalt mixture properties at or near the hotmix asphalt pavement performance under the premise, as far as possible to reduce the temperature of the mixture mixing, thereby reducing asphalt aging and harmful gas emissions.In this paper, asphalt temperature by mixing the low melting point Sasobit viscosity reducing agent to reduce the viscosity of bitumen preparation techniques were studied, through asphalt and Sasobit chemical analysis, to study the viscosity reduction mechanism, through the incorporation Sasobit viscosity reducing agentasphalt indicators test results show that Sasobit can effectively reduce the high temperature viscosity of the asphalt, the rheological properties of the modified asphalt has also been improved by warm mix asphalt mixture compaction temperature test, with HMAmaterial can reduce the mixing temperature20to25℃on the Sasobit modified asphalt mixture of high and low temperature performance, water stability and aging properties are analyzed experimentally, the results show that Sasobit modified asphalt mixture can improve the temperaturemix asphalt high temperature performance, improve the rut resistance of asphalt pavement, but then warm mix asphalt mixture has little effect on water stability and low temperature performance.Effectively reduce the mixing temperature of the asphalt mixture can join the Sasobit, to improve their road performance of warm mix asphalt mixture to achieve the purpose of environmental protection and energy saving; same time, to add the performance testing Sasobit Description Sasobit of the asphalt scope of wider.