摘要
对于桥隧比较高的高速公路,受桥梁恒载与隧道标高限制,加铺罩面方案逐渐向高性能沥青磨耗层发展。其中公称粒径较小的沥青玛蹄脂SMA-10不仅具有SMA-13路面的优良高温稳定性、耐久性和低温抗裂性能,还可以在一定程度上减小磨耗层的厚度,减少对优质集料和能源的消耗。但SMA-10在广东地区应用较少,施工经验不足,通过对配合比进行优化设计,从而进行不同地区适用性推荐,兼顾施工均匀性和路表抗滑性能的平衡。
For highways with high bridge-tunnel ratio,due to the limitation of bridge dead load and tunnel elevation,the overlay scheme gradually develops to high-performance asphalt wear layer.SMA-10 with smaller nominal particle size not only has the excellent high temperature stability,durability and low temperature crack resistance of SMA-13 pavement,but also can reduce the thickness of the wear layer to a certain extent and reduce the consumption of high-quality aggregate and energy.However,SMA-10 is less used in Guangdong area,and the construction experience is insufficient.Through the optimization design of the mix ratio,the applicability of different regions was recommended,taking into account the balance between construction uniformity and road surface skid resistance.
作者
赵康
何仲强
ZHAO Kang;HE Zhongqiang(China Railway 12th Bureau Group First Engineering Co.,Ltd.,Xi’an 710000,China;Guangzhou Xiaoning Road Engineering Technology Research Office Co.,Ltd.,Guangzhou 510641,China)
出处
《科技和产业》
2024年第23期363-369,共7页
Science Technology and Industry
