The Research Of Road Properties Of Asphalt Mixture Based On The Materials Composed Of Double Mixed Admixture

Adding the admixtures is an effective mean for modifying of civil engineering materials, it is wildly used in cement concrete. The technology of adding the admixtures in asphalt mixture is still in primary stage. At present, the application effect of anti-rutting agent and pavement fiber is very good.particularly, both can significantly improve the pavement's service performance. For example, adding anti-rutting agent in asphalt mixture can effectively improve its high temperature stability; while adding pavement fiber play a relative role in improving the pavement's low-temperature stability.But adding the both at the same time is still a research blank..The paper has solved such a problem. In order to improve the performance, we have added the both admixtures (anti-rutting agent and vegetable fiber) at the same time in asphalt mixture, then explore its effect of high temperature anti-rutting and low temperature anti-cracking. In the condition of different mixture material composition, we have analyzed the admixtures' effect and regular pattern. It does significantly influence in the part of various performance of asphalt mixture, particularly the anti-rutting and anti-cracking.We also have studied Technical characteristics and Technology advantage.Through the research, we found that adding the two admixtures is good at improving high and low temperature performance. It has overcome the problem that adding single admixtures only influence the single performance. Meanwhile, it also takes account of water stability and other performance. It makes the effectiveness of admixtures further enhance. It would be expected to employ in industry.Through analyzing the sensitivity factors, it is studied that the most sensitive factors of impacting the performance of Asphalt mixture which adding the two kinds of admixtures. Through studying on the respectively influence of the variety of the three maternal factors that are gradation and aggregate mode and asphalt grade to the three junior factors that are dynamic stability and low-temperature damage strain and TSR sensitivity, the most important conclusions are obtained as follows:The most sensitive factor of dynamic stability is gradation mode. To the low-temperature damage strain, the most sensitive factor is asphalt grade. The most sensitive factor of TSR is aggregate mode.