通过对半刚性材料干燥收缩机理和现常用测试方法优缺点分析,设计了新的更能模拟工程实际的测试仪器,用该仪器进行了不同温度、湿度环境下的不同细集料级配、不同结合料配比的干燥收缩试验,揭示了半刚性基层材料的收缩特性,并提出减少干燥收缩的方法。 Through the analysis of the mechanism of drying and shrinkage of semi-rigid materials and the analysis of the advantages and disadvantages of the commonly used test methods, a new more practical test instrument is designed and simulated. The instrument is used to test the different fine aggregates in different temperature and humidity environments. Combined with the dry shrinkage ratio of the material to reveal the shrinkage characteristics of the semi-rigid base material and propose a method to reduce the drying shrinkage.