赤泥渗沥液对黏性土和固化赤泥影响的试验研究

发布时间：2018-03-09 17:31

本文选题：赤泥渗沥液　切入点：腐蚀性　出处：《岩土力学》2017年S1期 　论文类型：期刊论文

【摘要】：赤泥渗沥液具有强碱性,首先对赤泥渗沥液的碱性进行分析,利用碱溶液模拟赤泥渗沥液,研究了山西某赤泥堆场黏性土样在强碱的腐蚀作用下物理性质的变化及其微观结构特征,重点考察不同的作用时间效应的影响。对利用水泥(或粉煤灰)固化的赤泥样的受碱腐蚀所引起的强度变化规律进行研究表明,在碱溶液作用下不同的固化时间时固化样的强度变化过程主要体现在整个过程的早期,固化样在经过较长时间的凝结过程和腐蚀效应的共同作用后强度逐渐趋于稳定,无侧限抗剪切强度不会有明显的衰减,利用水泥和粉煤灰对赤泥进行固化处理是可行的。
[Abstract]:Red mud leachate has strong alkalinity. Firstly, the alkalinity of red mud leachate is analyzed, and the red mud leachate is simulated by alkali solution. The changes of physical properties and microstructure of viscous soil samples from a red mud dump in Shanxi Province under strong alkali corrosion were studied. The effect of different action time on the strength of red mud solidified by cement (or fly ash) was studied. The results showed that the strength of red mud solidified with cement (or fly ash) was affected by alkali corrosion. Under the action of alkali solution, the strength of the solidified sample changes mainly in the early stage of the whole process, and the strength of the solidified sample tends to be stable after a long time of condensation process and corrosion effect. The unconfined shear strength has no obvious attenuation. It is feasible to use cement and fly ash to cure red mud.
【作者单位】：北京交通大学土木建筑工程学院;河北建设勘察研究院有限公司;河北省岩土工程技术研究中心;
【基金】：国家自然科学基金项目(No.51678043,No.51478034)~~
【分类号】：TU41

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