排水沥青混合料最大理论相对密度确定方法分析

Analysis of Determining the Maximum Theoretical Relative Density of Drainage Asphalt Mixture

为了能够准确的测试排水沥青混合料最大理论相对密度，通过片麻岩和玄武岩两种石料的混合料试验，比较了理论计算法，真空实测法，溶剂法以及沥青浸渍法几种不同的测试方法对排水沥青混合料最大理论相对密度的影响，分析了各试验数据的准确性和平行试验误差，结果表明采用真空实测法测试排水沥青混合料最大理论相对密度是比较合理的。同时分析了影响真空实测法试验结果的主要因素，提出该试验的关键是：松散沥青混合料试样要充分分散，抽真空时间15min。

In order to test the maximum theoretical relative density of drainage asphalt mixture accurately, based on the tests of gneiss and basalt, the methods of the theoretical calculation, vacuum measurement, solvent and asphalt impregnation are compared to analysis the accuracy of the test data and parallel test errors. The results indicate that the measurement method by vacuum drainage asphalt mixture testing the maximum theoretical relative density is more reasonable. By analyzing the primary facts which effect measurement, the key point is that asphalt mixture must be fully dispersed, time should be 15 minutes.