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川黔路四大段长12.3公里二级路,于1986年10月建成通车。两年多来该路为重庆市的经济建设发挥了重大作用。但路面在繁重的交通荷载(据1988年8月调查,交通量大于8000辆/日,其中有约8％的重车)和酷热的气候条件下(1988年7月25日～8月5日间,测得的路表温度高达60～62℃),发生了不同程度的破坏。由于该路是重庆地区铺筑的第一条高等级路面。在某种意义上可看作是一条试验路。为了从该路中吸取一些经验教训,我们于1988年8月对全路进行了较详细的调查,现将调查情况作一介绍。一、沥青路面出现的病害种类该路面结构为:12～28厘米不等厚的平摆片石加8厘米泥灰结碎石底基层,20厘米二灰
Sichuan-Guizhou Road, four sections 12.3 kilometers long secondary road, opened to traffic in October 1986. For more than two years, this road has played a significant role in the economic construction of Chongqing. However, under heavy traffic load (as surveyed in August 1988, the traffic volume is over 8,000 vehicles / day, of which about 8% is heavy vehicles) and hot weather conditions (July 25 to August 5, 1988) Between the measured road surface temperature up to 60 ~ 62 ℃), there have been different degrees of damage. As the road paved the first high-grade pavement in Chongqing. In a sense, it can be regarded as a test road. In order to learn some lessons from this course, we conducted a more detailed survey of the whole road in August 1988 and will present an overview of the investigation. First, the types of diseases occurred in the asphalt pavement The pavement structure: 12-28 cm unequal thickness of the pendulum stone plus 8 cm crushed stone base, 20 cm of lime