以滇南某循环流化床电厂粉煤灰和当地红黏土为原料,研究了红黏土中流化床粉煤灰不同掺量对固化土抗压强度、线性膨胀率的影响规律。研究结果表明:本试验所用的粉煤灰可替代传统二灰料固化红黏土应用于公路工程中;红黏土中粉煤灰掺量30%、用水量65%制备的固化土,其抗压强度满足所有等级道路基层强度标准;采用潮湿养护方式更有利于固化土抗压强度发展。 Taking the fly ash of a circulating fluidized bed power plant and the local red clay in southern Yunnan as raw materials, the effect of different contents of fly ash in red clay on compressive strength and linear expansion rate of cured soil was studied. The results show that the fly ash used in this experiment can be used to replace the conventional red clay cured red clay used in highway engineering. The cured clay prepared with 30% fly ash and 65% Meet all levels of road base level strength standards; wet curing method is more conducive to the development of soil compressive strength.