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试验研究模拟不同基层类型及底面处理方式对水泥混凝土浇注面底面弯拉强度的影响。结果表明:塑料薄膜隔离层、蜡隔离层、稀浆封层隔离层不利于水泥混凝土浇注面底面弯拉强度的形成,而土工膜隔离层极有利于水泥混凝土浇注面底面弯拉强度的形成;基层表面处于饱和面干状态时对水泥混凝土浇注面底面弯拉强度形成最为有利;对于相同的塑性混凝土,级配碎石基层、水泥稳定碎石基层上水泥混凝土浇注面底面弯拉强度要高于贫混凝土基层上的;水灰比越小,水泥混凝土浇注面底面弯拉强度相对越高。
The experimental study simulates the influence of different grassroots types and bottom treatments on the flexural strength of the bottom of cement concrete pouring surface. The results show that the plastic film isolation layer, the wax isolation layer and the slurry seal isolation layer are not conducive to the formation of the flexural strength of the bottom surface of cement concrete pouring surface, while the geomembrane isolation layer is very conducive to the formation of the flexural strength of the bottom surface of the cement concrete casting surface; For the same plastic concrete, the flexural strength of the bottom surface of the cement concrete pouring surface of the graded broken gravel base and the cement stabilized gravel base is higher than that of the base of the cement stabilized gravel base Lean concrete base; the smaller the water-cement ratio, the lower the flexural strength of the concrete pouring surface is relatively higher.