低噪声沥青路面混合料配合比设计研究

Study on Low Noise Asphalt Pavement Mixture Design

为研究低噪声沥青路面混合料的配合比设计方法,选用了矿料级配设计和最佳沥青用量作为低噪声沥青路面混合料配合比设计两大主要设计指标,研究采用表记方法确定骨料级配设计,采用理论计算、流淌试验以及沥青滴落试验进行对比分析,确定了沥青混合料的最佳沥青用量。结果表明,采用表记方法得到混合料的空隙率与目标空隙率具有良好的线性相关,采用流淌试验法确定沥青混合料最佳沥青用量,更符合工程实际且易于推广。

To study the methods of the low-noise asphalt pavement mixture mix design,the paper design used gradation and optimum asphalt content as the two main design specifications of low-noise asphalt pavement mixture design.The search used the table as aggregate grading design and determined the best asphalt content by comparative analysis of theoretical calculations,flow test and asphalt fell tests.The results showed that：Mixture of air voids resulted in using the table had a good linear correlation with target air void.The way of determining the best asphalt content using flow test is more consistent with actual project and easy to spread.