普通硅酸盐-硫铝酸盐复合水泥浆液流变特性试验

普通硅酸盐-硫铝酸盐复合水泥浆液在地质灾害快速治理工程中具有广阔的应用前景,但复合浆液的流变特性直接影响到应用效果。采用理论分析与试验相结合的方法对不同配合比的普通硅酸盐-硫铝酸盐复合水泥浆液的流变特性进行了研究。根据试验结果绘制了复合水泥浆液的剪切应力-剪切速率变化曲线;通过测定浆液的表观粘度随时间的变化情况分析了水泥浆液粘度的时变特性。试验结果表明,水灰比对复合水泥浆液的流型有较明显的影响,减水剂对浆液的流型无明显影响,但对浆液的流变参数的数值影响较大,研究结果对于工程应用具有一定的指导意义。

Rheological Characteristics of Portland-sulphur Aluminate Composite Cement Slurry

Portland-sulphur aluminate composite cement slurry has broad application prospect in rapid geological disaster management project, but the rheological properties directly affects the application effect. By combining theoretical analysis with test, the research on the rheological properties of portland-sulphur aluminate composite cement slurry with different mixing proportion was carried out. According to the test results, the curves of shear stress and shear rate of composite cement slurry were drawn; by measuring the time-dependent change of apparent viscosity of the slurry, the time-varying property of cement slurry viscosity was analyzed. The test results show that the water cement ratio has obvious influence on the flow pattern of composite cement slurry; water-reducing agent has no obvious rule to the flow pattern, but has great influence on the rheological parameters of the slurry.