Research status and trend of calcium sulfate whisker modified asphalt
This paper focuses on the physical and chemical properties of calcium sulfate whiskers and the modification mechanism of asphalt.The research results of surface modification,preparation process and properties of calcium sulfate whiskers are sorted out.The existing problems and future research directions of calcium sulfate whisker modified asphalt are put forward.It is pointed out that the future research should focus on the preparation process of calcium sulfate whiskers and the research on the flexibility and toughening of composite materials.Finally,by analyzing the application advantages of calcium sulfate whisker modified asphalt prepared by phosphogypsum,it has broad application prospects for promoting the high value-added utilization of phosphorus solid waste.
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