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为了提高大粒径透水性沥青混合料(LSPM)基层的路用性能,以MAC改性沥青作为LSPM结合料,对MAC改性沥青、基质沥青和SBS改性沥青的性能进行了对比,提出了MAC改性沥青LSPM高温稳定性、水稳定性、抗疲劳性、渗透性、抗反射裂缝性等路用性能要求,并进行了MAC改性沥青LSPM材料组成设计、施工技术研究和试验路修筑。试验结果表明:MAC改性沥青LSPM空隙率为13%～18%,沥青膜的厚度大于12μm,模量为400～600MPa,试验路通车2年后车辙量在4～8mm之间,这表明MAC改性沥青LSPM具有较高的路用性能。
In order to improve the road performance of large particle size permeable asphalt mixture (LSPM) base course, MAC modified asphalt as LSPM binder, the performance of MAC modified asphalt, asphalt and SBS modified asphalt were compared, proposed MAC modified asphalt LSPM high temperature stability, water stability, fatigue resistance, permeability, anti-reflective cracking and other road performance requirements, and MAC modified asphalt LSPM material composition design, construction technology research and test road construction. The test results show that the porosity of MAC modified asphalt LSPM is 13% ~ 18%, the thickness of asphalt film is greater than 12μm, the modulus is 400 ~ 600MPa, and the rutting amount of test road is 4 ~ 8mm after 2 years’ Modified asphalt LSPM has high road performance.