电石渣固化软土的强度特性研究

Strength of carbide slag stabilized clay soil

本文采用电石渣、矿渣、粉煤灰为主要固化剂组分,测试电石渣单独固化土以及电石渣与矿渣、粉煤灰共同固化土的强度特性,检测电石渣固化土的效果。结果表明:采用电石渣单独固化土,固化土强度随电石渣掺量增加呈现先增大后减小的趋势,电石渣掺量为20%时,固化土强度最高。适量增加土样的含水率有利于增加电石渣固化土的强度。当电石渣掺量为15%时,土样含水率增加5%,固化土强度最佳;当电石渣掺量为20%和25%时,土样含水率增加3%,固化土强度最佳。电石渣激发矿渣和粉煤灰共同固化土效果显著,电石渣与矿渣、粉煤灰之间都存在一个最佳配合比,矿渣:电石渣=9:1,粉煤灰:电石渣=8:2是最佳配合比。

In this paper, carbide slag, slag and fly ash were used as the main curing agent components to test the strength characteristics of calcium carbide slag stabilized soil and carbide slag solidified soil together with slag and fly ash, and test the effect of carbide slag solidified soil. The results show that the strength of stabilized soil increases firstly and then decreases with the increase of carbide slag content, and the strength of stabilized soil is highest when carbide slag content is 20%. Proper increase of moisture content of soil sample is beneficial to increase the strength of carbide slag stabilized soil. When the content of carbide slag was 15%,the water content of soil sample increased by 5%, and the stabilized soil had the best strength. When carbide slag content is 20% and 25%, soil water content increases by 3%. Carbide slag can stimulate slag and fly ash to stabilize soil together, and there is an optimal mixture ratio between carbide slag, slag and fly ash. Slag: carbide slag =9:1, and fly ash: carbide slag =8:2 is the optimal mixture ratio.