复合矿粉水泥土的无侧限抗压强度试验

摘要

将工业中生产的废渣制作成的复合矿粉掺加至水泥土中，既增强其性能，同时也可达到利废环保的目的。通过室内无侧限抗压强度试验，运用正交试验方法研究了影响复合矿粉水泥土抗压强度的主要因素及其影响规律。通过极差和方差分析可知，水泥掺量对复合矿粉水泥土的无侧限抗压强度的影响最大，其次是龄期，复合矿粉的影响最小。复合矿粉水泥土的早期强度提高主要是由于水泥的水化，而由矿粉和粉煤灰组成的复合矿粉具有微集料效应和火山灰效应，从而可改善水泥土的强度。%To mix the soil-cement with composite mineral powder made from the slag in industrial production can reinforce the property of the soil-cement,and is also environment-friendly to utilize the waste.Based on the indoor unconfined compressive strength test,we investigated the main factors that influence the compressive strength of composite mineral powder soil-cement. Analysis of range and variance shows that cement content is the major factor affecting the unconfined compressive strength,fol-lowed by age and in the last place,composite mineral powder.The improvement of strength of composite mineral powder soil-ce-ment in the early period is mainly due to hydration of cement,while composite mineral powder which is made of mineral powder and fly ash has micro aggregate effect and pozzolanic effect.In general,the strength of soil-cement could be fairly improved.