多孔隙沥青混凝土试验研究

Test Study on Porous Asphalt Concrete

主要结合河北省京沪高速公路减噪试验路的材料配合比设计 ,对多孔隙沥青混凝土 (PAC2 0 )进行试验分析 ,文中对 4种PAC2 0型混合料的级配进行分析研究 ,并从中选择试验路所需级配范围。同时 ,为了改善PAC2 0的水稳定性 ,试验分析水泥取代矿粉或掺加消石灰对混合料的影响 ,考虑施工条件 ,实际施工中选择了水泥代替矿粉的措施。

The porous asphalt concrete (PAC20,the maximum stone size is 20mm)is tested and analyzed in this paper,combined with the materials' design of low noise asphalt pavements testing sections in Hebei Provincial Jinghu expressway.Comparisons are made of four different aggregations of the PAC20.One aggregation is selected for the testing section. At the same time,to improve the mixture water stability,the cement is selected instead of hydraulic lime to replace mineral powder,based on comparison analysis taking into account of construction conditions.