Performance Comparison Of Different Types Of Warm Mix Asphalt Dased On Light Heat And Weat Coupling Aging

Warm mix asphalt(WMA) is relative to akind of new technology of the traditional hot mix asphalt(HMA).It makes bituminous mixture mixing and com Paction below the temperature of mixing conditions of the hot mix asphalt by certain technical measures. In the same time, maintaining warm mix asphalt have theperformance that not lower than HMA bituminous mixture Moever it could reduce energy consumption and emissions.The aging of asphalt coupling refers to the aging asphalt bitumen aging in several different factors working together. This Paper relies on the Chongqing Munici Pal Science and Technology Fund for Nature "Carbon Emissions in Line with the Development of SBS Modified Asphalt Concrete Static and Dynamic Characteristic Research" and exPand the study and com Parison based on the performance of warm mix asphalt viscosity and surfactant technology. Selecting AH70# matrix asphalt and SBS modified asphalt, the effects of different agents on two warm mix asphalt performance is studied and contrasted by adding organic warm mix viscosity agent Sasobit and surface-active warm mix agent DAT into the two asphalts.This Paper studies the effects of different agents on the basic performance of warm mix asphalt by studying the influence of penetration,ductility,softening point,and the viscosity of Brookfiled of Sasobit and DAT on SBS modified asphalt and AH70# asphalt.And it evaluated the effects of Sasobit and DAT on different asphalt short-term aging properties through studying the influence of penetration,ductility,softening point,Brookfiled viscosity,anti rutting factor,anti fatigue factor,phase angle and complex shear modulus of Sasobit and DAT on modified asphalt and AH70#asphalt after the rotary film aging test.This Paper through the light-heat-wet coupling box to simulate the aging of asphalt in the natural environment.To study the sensitivity of different warm mix agents on different aging conditions by com Paring penetration,ductility,softening point,Brookfiled viscosity,anti rutting factor,anti fatigue factor,phase angle and complex shear modulus of different asphalt after aging.Through mathematical methods to establish the function relationship between different indexes and the condition of aging,this article analysis the sensitivity of each index on the aging conditions.