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四川有些地方的石料软化系数很低(虽然干燥强度达到了技术规范的要求),据重庆建筑工程学院实验的结果,重庆砂岩的软化系数平均小于0.5。如果小试件乘以折算系数,那么它的强度值就低得太多了,要是按照材料技术规范的要求,那是完全不能使用的。可是在这些地方修建公路和桥涵时,都是利用这些石料,因而有的风化得很利害,给养路工作带来许多困难,根据苏联经验,应用各种当地材料铺筑的路面和修建的桥涵,是能够承受现代重型车辆的滚压的。这里仅就个人接触到的一些问题提供参考。
In some parts of Sichuan, the softening coefficient of stone is very low (although the drying strength meets the requirements of the technical specifications). According to the results of experiments conducted by Chongqing Institute of Construction Engineering, the average softening coefficient of sandstone in Chongqing is less than 0.5 on average. If a small test piece is multiplied by the conversion factor, its intensity value is too low, which can not be used at all according to the material specifications. However, the construction of highways and bridges and culverts in these places all make use of these stones, and some of them are very weathered and bring many difficulties to road maintenance. According to the experience of the Soviet Union, the pavement and the bridges and bridges constructed with various local materials are used. Is able to withstand the rolling pressure of modern heavy vehicles. Here only for personal exposure to some of the issues provide a reference.