电石渣-粉煤灰稳定土强度影响因素分析

Analysis of Factors Affecting Strength of Soil Stabilizedby Calcium Carbide Slag-fly Ash

以渣粉比(电石渣与粉煤灰比值)、磷石膏掺量和土质种类作为因素变量,基于7天无侧限抗压强度和劈裂强度指标设计L9(34)正交试验。结果表明:土质种类对于稳定材料的7天强度影响非常显著,低剂量磷石膏掺量对于电石渣-粉煤灰复合稳定土强度存在显著影响,一定范围内渣粉比的变化对于稳定土强度也有一定的影响。

Herein slag powder ratio(ratio of carbide slag to fly ash),phosphogypsum content and soil type were taken as the factors and variables to design the L9(34)orthogonal test depending on the indexes of 7-day unconfined compressive strength and splitting strength.The result shows that the soil type has outstanding impact on 7-day strength of stabilized material,and the low content of phosphogypsum has significant effect on the strength of soil stabilized by composite calcium carbide slag-fly ash and,within certain range,the change of slag powder ratio has some influence on the strength of stabilized soil.