Study on the Influence of Matrix Asphalt on Microsurface Properties
In order to study the effects of different matrix asphalt on the performance of modified emulsified asphalt and micro surface mixture,four different brands of 70#asphalt were selected to prepare SBR modified emulsified asphalt,and the comprehensive performance of modified emulsified asphalt and the prepared micro surface mixture was compared and analyzed.The results show that the type of base asphalt has a great impact on the performance of modified emulsified asphalt and micro surfacing mixture,but there is no obvious correlation between the conventional performance of base asphalt and the storage stability and residue performance of emulsified asphalt.Among the four types of matrix asphalt,Zhonghai Asphalt has the best mixing and Construction performance for the micro surface mixture,Jinling Asphalt has the worst per-formance,while Zhonghai and Shell Asphalt have relatively good comprehensive road performance,and Jinling and Zhenhai Asphalt have rela-tively poor performance.In the actual construction process,when the modified emulsified asphalt has determined by the mix design procedure,the matrix asphalt used in the modified emulsified asphalt should not be arbitrarily replaced by the brand and type.
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