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我省公路由于缺乏砂石材料,养护困难,路况较差。晴天尘土多,雨天泥泞不能通车,晴雨通车里程只有1,700余公里占总里程的7.4%。每年投入的小修保养费用约900万元,在缺乏砂石地区每年公里的经常养护费用为1,000～1,500元;如加铺砂石磨耗层,则每公里需5,000元左右,而使用周期尚不到一年,少的只能维持3～6个月,很不经济。因此,摆在养路工作面前的迫切任务是,如何最有效的养好公路,做到既省钱又能满足运输的要求。通过1958年在津保北线铺筑沥青表面处治、和近两年铺筑的试验路的情
Due to the lack of sand and gravel materials in our province, maintenance difficulties and poor road conditions. Sunny dust and rainy days can not be opened to traffic muddy, rain was only 1,700 kilometers mileage accounted for 7.4% of the total mileage. Annual maintenance costs of about 9 million yuan will be devoted to minor maintenance and 1,000-1,500 yuan per year for kilometers of sand and gravel deficient areas. If sand and gravel is added, it will cost about 5,000 yuan per kilometer for a period of less than One year, less can only maintain 3 to 6 months, it is not economical. Therefore, the urgent task before the road maintenance work is how to best support the road so as to save money and meet the requirements of transportation. Passed the asphalt surface treatment in the north line of Jinbao in 1958 and the test road paved in recent two years