离子土壤稳定剂加固膨胀土试验

2011 Second International Conference on Mechanic Automation and Control Engineering Pub Date : 2011-07-15 DOI:10.1109/MACE.2011.5987532

Yi-min Wang, Xiao-lan Liu

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引用次数: 0

摘要

采用离子土稳定剂加固膨胀土，改善膨胀土的工作性能。设计了4组不同混合比例的稳定土，考察其改良效果。通过一系列试验研究了稳定土的膨胀性和强度。对其化学成分、阳离子交换容量、微观结构和BET表面积进行了测试和分析。结果表明，总胀缩率和塑性指数均显著降低。稳定土的抗压强度和水中稳定性得到有效提高。在膨胀土中掺入ISS后，其阳离子交换容量和BET比表面积均有所降低。在膨胀土中加入一定剂量的ISS和石灰，使膨胀土的微观结构由层状结构转变为粒状结构。

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Tests of ionic soil stabilizer reinforcing expansive soil

Ionic soil stabilizer was used to reinforce expansive soil and improve its working performance. 4 groups of stabilized soil with different mixture proportion were designed to investigate the effects of improvement. The expansibility and strength of stabilized soils were studied through a series of tests. The chemical composition, cation exchange capacity, microstructure and BET surface area were tested and analyzed as well. It was found that the total swelling and shrinking percentage and the plasticity index decreased significantly. The compressive strength of stabilized soil and its stability in water were effectively improved. It was also found that the cation exchange capacity and BET surface area of swelling soil decreased by mixing ISS into it. The microstructure of swelling soil was changed from layered structure to grainy one by adding a certain dosage of ISS and lime into it.

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2011 Second International Conference on Mechanic Automation and Control Engineering

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