SMA骨架标准研究

Study on the criterion of SMA framework

传统观点认为 ,VCADRC大于 VCAMix是 SMA骨架结构形成的标准 ,但是 VCADRC与 VCAMix在试验体系上有许多方面可导致系统误差。分析了两者的试验方法差异 ,及其对试验结果的影响 ,试验及结果分析表明 :用体积法测量的毛体积密度换算的 VCAMix较合理 ,用

On the traditional view,the criterion of framework for SMA mix is that VCA DRC must be larger than VCA Mix .But there are several facets,to those test methods,which could cause errors between them.In this paper,the difference to those test methods and its influence on the test results are analyzed.The test results show that it is reasonable for the bulk density,which volume is measured by calipers,to calculate VCA Mix ,and the point at the variety slope of the flot,VCA Mix versus the percent passing the 4 75 mm sieve,could evaluate the coarse aggregate skeleton in a SMA mixture.