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(一)沥青磨耗层的特点自1961年以来,湖南省干线公路上已铺沥青磨耗层整100公里,面积达63万平方米。在交通量300～400辆/昼夜的情况下,迄今使用时间最长的已近三年,路面状况仍基本良好。沥青磨耗层是在清扫干净的泥结砾(碎)石路面上浇洒一次沥青,再撒以砂或石屑的一种保护过渡式路面的措施。利用适当稠度的沥青,使一少部分下渗起透层油作用,又有大部分留在表面把砂或石屑粘结起来起主层油作用。这种保护层具有如下特点:(1)施工简便沥青磨耗层施工程序少,洒油撒砂各一次。施工后可以立即开放行车。施工中
(A) Characteristics of Asphalt Abrasion Layer Since 1961, the asphalt abrasion layer in Hunan Province has been paved with 100 km of asphalt abrasion layer covering an area of 630,000 square meters. In the case of traffic volume of 300 to 400 vehicles / day and night, the condition of the road surface is still basically good in the nearly three years that has been the longest used to date. Asphalt wear layer is a measure of protecting the transitional pavement by spraying asphalt once the cleaned mud, gravel (crushed) stone surface is sprinkled with sand or stone chips. The use of the appropriate consistency of asphalt, so that a small part of the permeation through the role of permeation of oil, and most remain in the surface of the sand or stone chips bonded from the main role of oil. This protective layer has the following characteristics: (1) easy construction Asphalt wear layer less construction procedures, sprinkle sprinkler time. After construction can be open to traffic. Construction