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1963年5月在河北沧州附近原有炉灰垫层的一段公路上铺筑了两公里的8及12厘米厚石灰碎砖土路面,并加铺1.5厘米厚的沥青表面处治;1964年5～7月又在同一公路上水毁路段铺筑了三处共长2.1公里的14厘米厚石灰碎砖土,并加铺1.5厘米厚的道路渣油表面处治。该公路经常有200～300辆/昼夜的汽车和400～600辆/昼夜的马车行驶,始终未发现一条裂缝,迄今保持坚实平整,结合牢固。现将施工过程介绍如下: 一、材料选择及配合 1963年施工路段系采用松方体积比:石灰:碎砖:土=1:3:3。由试验得出: 土——通过2厘米筛孔,塑性指数为12～15,松
May 1963 Cangzhou, Hebei, near the original ash mat on a section of the road paved two kilometers of 8 and 12 cm thick lime crushed brick soil pavement, and 1.5 cm thick plus asphalt surface treatment; 1964 5 ~ July again on the same road overpass paved the three sections of a total length of 2.1 km 14 cm thick lime brick soil, and add 1.5 cm thick road residue surface treatment. The road is often driven by 200 to 300 cars / day and night and 400 to 600 cars / day and night, and no crack has ever been found. So far, the road has remained solid and firm with a solid foundation. Now the construction process is described as follows: First, the material selection and cooperation In 1963 the construction section of the system uses pine square volume ratio: lime: broken brick: soil = 1: 3: 3. From the test: soil - through 2 cm sieve, plastic index of 12 to 15, loose