Evaluation of RAP Refined Decomposition Effect and Study on The Performance of Recycled Asphalt Mixture
Using refined decomposition technology to treat recycled asphalt mixture(RAP)can reduce the variability of RAP and improve the road performance of recycled asphalt mixture.Through the refined de-composition RAP test of different processes,the rule and variability of refined decomposition RAP aggregate gradation and asphalt content were analyzed.The recycled asphalt mixture was prepared by refined decomposi-tion RAP,and the influence of refined decomposition process on the road performance of recycled asphalt mix-ture was analyzed.The results show that the gradation(after extraction)and asphalt content of RAP(origi-nal)without refined decomposition have great variability.The refined decomposition process reduces the varia-bility of RAP aggregate gradation(after extraction)and asphalt content,and improves the stability of RAP and the quality of raw materials of recycled asphalt mixture.The refined decomposition process is conducive to im-proving the road performance of recycled asphalt mixture,especially the dynamic stability and maximum ben-ding tensile strain.The refined decomposition process is conducive to improving the content of RAP in recy-cled asphalt mixture,ensuring the quality of recycled asphalt mixture,and improving the recycling level of RAP in asphalt pavement.
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