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水泥土管作地下输水管道,内部承受水压力,上部承受活载及土压力等。为保证水泥土管的安全使用,进行了内水压力与过载试验。水泥土管的抗弯强度与其材料本身的抗压强度一样,在土料基本相同的情况下,与水泥掺量、干容重有关。当水泥掺量5～17%,干容重1.68～1.95吨/米~3时,管子抗弯强度为材料抗压强度的0.44倍(图1)。这给管子加工制造提供了重要依据。
Cement soil pipe for underground water pipe, the internal pressure to withstand water, the upper bearing live load and earth pressure. In order to ensure the safe use of cement soil, carried out the internal water pressure and overload test. The bending strength of cement-soil pipe is the same as the compressive strength of the material itself, and is basically related to the cement content and dry bulk density. When the cement content of 5-17%, dry bulk density of 1.68 ~ 1.95 tons / m ~ 3, the tube bending strength of 0.44 times the compressive strength of the material (Figure 1). This provides an important basis for pipe manufacturing.