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利用细沙代替碎石铺筑的沥青沙路面是我国缺砂石地区沥青路面建设中的一种新的路面结构型式。它可以就地取材且施工与养护比较容易，有显著的经济效益和社会效益，对交通流量不太大、路面强度要求不太高的道路，这种路面经过多年的实践证明可用现已得到推广应用。tWBJ型沥青
The use of fine sand instead of gravel paving asphalt pavement is a new type of pavement structure in the construction of asphalt pavement in the absence of gravel. It can be obtained locally and the construction and maintenance of relatively easy, with significant economic and social benefits, for traffic flow is not too large, less demanding road surface strength of the road after years of proven available now available Promote the application. tWBJ type asphalt