炉渣改良淤泥质粉质黏土力学性质试验研究

以探究垃圾焚烧炉渣改良黏性土力学性能为目的,在不同的竖向压力(100~800 k Pa)下,对上海淤泥质粉质黏土掺和炉渣后的混合重塑土样进行了室内直剪试验研究,得到了混合土剪切破坏的变形特性和强度特性。结果表明,随着炉渣掺量的增加,混合土样的抗剪强度逐渐增大,受力由黏性土逐渐转向炉渣。最后,通过对试验后混合土样破坏面的观察,分析了土-渣混合物强度提高的作用机理。

Experimental study on mechanical properties of slag mixed muddy silty clay

In order to studying the mechanism of waste incineration slag improved clay, a series of direct shear tests on muddy silty clay and slag mixture, taken from Shanghai, was performed to get the deformation characteristics and strength characteristics of mixed soil under the ranges of vertical pressures from 100 to 800 kPa. It is shown that with the increase of slag content, the shear strength of the mixed soil sample is gradually increased, and the stress is gradually transferred from cohesive soil to slag. Finally, the mechanism of improving soil-slag mixture strength was analyzed by observing the failure surface of mixed soil samples after the experiment.