Study On The Effect Of Anti-stripping Agent On The Performance Of Asphalt And Granite Asphalt Mixture

In the early damage of asphalt pavement,moisture damage accounts for a large proportion.The basic reason of moisture damage is that the adhesion between asphalt and aggregate is weak,under the comprehensive effect of water and vehicle load,the asphalt strip from the surface of aggregate,especially the surface of the acidic aggregate,Causing pavement disease,One of the important measures to improve the stability of asphalt pavement water is to add asphalt anti-stripping agent,The specification evaluation of the asphalt anti-stripping agent includes both the adhesion of the asphalt and the aggregate and the moisture stability of the asphalt mixture,without taking into account the effect of the anti-stripping agent on the other properties of the asphalt and the mixture.In addition,the influence of the anti-stripping agent on the asphalt pavement performance was analyzed,and the relevant conclusions were drawn.The XT-1,TJ-066,PA-1 anti-stripping agent was added to the asphalt for comparison test.analysis of the relationship between anti-stripping agent type and addition and high temperature performance,low temperature performance,ageing resistance,and adhesion properties.The performance characterization was evaluated by the penetration degree,ductility,intenerate point and dynamic viscosity of asphalt.The influence of different adding methods on the moisture damage and high temperature performance of the asphalt mixture was studied by using the mixed method of adding XT-1,hydraulic lime and cement.In the end,the cost of the different adding method of the stripping-agent was analyzed and draws the conclusion.The results show that the anti-stripping agent has improving effect on the low temperature performance and aging resistance of the asphalt to a certain extent,but it will adversely affect the high temperature performance,but the integral performance will be improved.The addition of anti-stripping agent has an optimum value,XT-1 is 0.3%,TJ-066,PA-1 is 0.4%,and the comprehensive performance of asphalt is the best.In the adding method,the mixing adding method effect on the moisture stability is better,and the effect on the high temperature performance is small,especially the combination of XT-1+ hydraulic lime,the economic benefit and the improvement effect are better.