摘要
某大修工程采用高掺量河砂沥青混合料AC-13与AC-20铺筑沥青路面面层。两种混合料均添加18%的河砂,2%的水泥作为抗剥落剂;马歇尔试验方法确定最佳油石比分别为4.9%与4.5%;室内试验研究表明混合料具有良好的水稳定性、高温及低温性能。
AC- 13 and AC -20 asphalt mixture with high content of river sand were used to pave asphalt pavement in an overhaul project. 18% river sand and 2% cement as anti -stripping agents were added into the two kinds of mixtures. 4. 9% and 4. 5% optimum asphalt ratios were determined by Marshall test method. Laboratory tests showed that the water stability, high temperature and low temperature performance of mixture were very well.
关键词
道路工程
路面
沥青混合料
河砂
road engineering
pavement
asphalt pavement
river sand
