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河北沧州专区于1962年9月份在保歧公路沧县—河间段(K4+700～K5+600)修筑了0.9公里1.5厘米厚的沥青表面处治试验路,1963年4月底至6月底又在该线上铺筑了9.5公里相同结构的沥青表面处治。原有路面结构是:K2—K4为新修石灰碎砖土,其余为1957年修建的级配砾石。表面处治修成后不到三个月就遭历史上罕见的洪水漫淹,根据被淹后的情况,对施工工艺等方面提出以下几点体会:一、旧路面的平整方法。在表面处治施工过程中,旧路面的平整是比较困难的一个工序,而又是关系处治层质量好坏的关键。故我们曾採用多种方法,试图取得满意的结果。(1)普遍翻修。即将旧路面普遍刨忪3～4厘米
Hebei Cangzhou area in September 1962 in bumper County Cangxian - Hejian (K4 +700 ~ K5 +600) built 0.9 km 1.5 cm thick asphalt surface treatment test road, from the end of April 1963 to the end of June in the The line paved 9.5 km of the same structure of asphalt surface treatment. The original pavement structure is: K2-K4 for the new lime brick broken soil, the rest graded gravel built in 1957. Less than three months after the surface treatment was completed, it was flooded by floods rarely seen in history. According to the situation after flooding, the following points were made on the construction technology: First, the smoothing method of the old pavement. In the surface treatment and construction process, the formation of the old road is a more difficult process, but also the key to the quality of governance layer. Therefore, we have used many methods in an attempt to achieve satisfactory results. (1) Universal renovations. About the old pavement is generally 3 ~ 4 cm