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首页> 外文期刊>Materialpruefung: Werkstoffe und Bauteile, Forschung Prufung Anwendung >Experimental study on solidification of Cu(II)-contaminated soil using red mud with cement and Ca(OH)(2)
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Experimental study on solidification of Cu(II)-contaminated soil using red mud with cement and Ca(OH)(2)

机译：用水泥和Ca凝固土壤凝固土壤凝固的实验研究（OH）（2）

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摘要

Red mud is a waste product generated by the aluminum industry and its presence has significantly damaged the environment. Interestingly, red mud has some desirable adsorptive properties and can solidify heavy metal ions. Moreover, after processing, red mud has certain cementing properties that have a positive influence on the curing effect of red mud cement-treated soil. This study examined different ratios of red mud, cement and Ca(OH)(2) by testing the electrical resistivity and unconfined compressive strength of various soils. The resistivity test indicates that the electrical current frequency has a great influence on the test results. It is recommended that a current frequency between 1 and 50 kHz is used in a resistivity test. The study also indicates that, with increasing Cu2+ content, conductive tunnel effect occurs. However, when the ratio of curing agent and content of Cu2+ are different, the time causing the conductive tunnel effect varies. The unconfined compressive strength of different cement-to-soil ratios decreases with increasing Cu2+ content and the reduction extent is related to that ratio. Lastly, the study results suggest a good linear relationship between unconfined compressive strength and electrical resistivity, which is dependent on the specific ratio of contaminating materials.
机译：红泥是由铝业产生的废物，其存在严重损坏了环境。有趣的是，红泥具有一些理想的吸附性能，可凝固重金属离子。此外，在加工后，红泥具有一定的硬质特性，对红泥水泥处理土壤的固化作用具有积极影响。该研究通过测试各种土壤的电阻率和非整合的抗压强度检测了红泥，水泥和Ca（OH）（2）的不同比例。电阻率测试表明电流频率对测试结果产生了很大影响。建议在电阻率测试中使用1至50 kHz之间的电流频率。该研究还表明，随着Cu2 +含量的增加，发生导电隧道效应。然而，当Cu2 +的固化剂和含量的含量不同时，导致导电隧道效应的时间变化。不同水泥对土比例的非整合抗压强度随着Cu2 +含量的增加而降低，减少范围与该比例有关。最后，研究结果表明了无凝固的抗压强度和电阻率之间的良好线性关系，这取决于污染材料的特定比率。

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