Study on preparation parameters of new rubber and eucommia ulmoides gum composite modified asphalt
In order to improve the high temperature performance and storage stability of rubber asphalt(RA),based on the modification and enhancement mechanism of eucommia ulmoides gum(EUG),a rubber-plastic dual-renewable resource,on the rub-ber asphalt,with the conventional performance tests and microscopic observations of asphalt,the influence of reaction time and tem-perature of EUG and rubber powder and the amount of rubber-EUG composite modifier(RECM)on the properties of rubber and EUG modified asphalt(REMA)were analyzed and the optimum preparation process of REMA was proposed.The results showed that EUG was able to significantly improve the performance of rubber asphalt;REMA has good construction workability and storage stability;The dosage of modifier has a significant impact on the performance of REMA,with a greater impact on the reaction time of eucommia ulmoides gum and rubber powder,and a smaller impact on the reaction temperature of Eucommia ulmoides gum and rubber powder.Combined with macroscopic performance test results and microscopic analysis,the best performance of REMA is prepared by the following process:the reaction time of EUG and rubber powder is 1.0～1.5 h,the reaction temperature of EUG and rubber powder is 170～180℃,and the RECM content is 20％～25％of the mass of base asphalt.
rubber asphalteucommia ulmoides gumcompound modificationpreparation process
万方数据
维普
