Polyetheramine as swelling-inhibitor for expansive soil: Performance and mechanism,Journal of Applied Polymer Science

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Polyetheramine as swelling-inhibitor for expansive soil: Performance and mechanism
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2021-09-12 , DOI: 10.1002/app.51639
Haixiang Hu ₁ , Yu Qiu _{1,

2} , Zheng Lu _{1,

3} , Chuxuan Tang _{1,

2} , Hailin Yao ₁ , Ming Cheng ₄

Affiliation

The logical coherence macro–micro experiments about the anti-swelling performance of polyetheramine-230 (PEA-230) on expansive natural soil are presented in this paper. Further, the expansion of the soil in the solution and water system is considered. Great significance in treating the expansive soil broadens the applied range of polyetheramine-230. The mechanism is assessed by X-ray diffraction (XRD) in the state of wet and dry montmorillonite (Mt), XRD of dry clay extracts from the soil, zeta potential measurement, thermogravimetric analysis, and scanning electron microscopy. The results prove the significant effect of controlling the expansion of expansive soil. PEA-230 strongly adsorbs on the surface of soil particles and intercalates into the layer structure. Further, the PEA-230/soil hybrids can be judged as usable engineering soil with low expansion characteristics. Additionally, the concentration of PEA-230 controls the treatment effect, and 1 wt% PEA-230 is a proper concentration to treat the expansive soil. In particular, PEA-230 has excellent characteristics such as small molecular weight, good water solubility, and good stability. Thus PEA-230 can be regarded as a great agent to treat in-situ expansive soil.

中文翻译：

膨胀土膨胀抑制剂聚醚胺的性能与机理

本文介绍了关于聚醚胺-230（PEA-230）在膨胀天然土壤上的抗膨胀性能的逻辑相干宏观-微观实验。此外，还考虑了溶液和水系统中土壤的膨胀。对处理膨胀土具有重要意义，拓宽了聚醚胺230的应用范围。通过湿态和干态蒙脱石 (Mt) 状态下的 X 射线衍射 (XRD)、土壤中干粘土提取物的 XRD、zeta 电位测量、热重分析和扫描电子显微镜评估该机制。试验结果证明了控制膨胀土膨胀的显着效果。PEA-230 强烈吸附在土壤颗粒表面并嵌入层状结构中。更远，PEA-230/soil 杂交体可判定为可用工程土，具有低膨胀特性。此外，PEA-230的浓度控制了处理效果，1wt%的PEA-230是处理膨胀土的合适浓度。特别是PEA-230具有分子量小、水溶性好、稳定性好等优良特性。因此PEA-230可被视为处理原位膨胀土的一种很好的药剂。

更新日期：2021-09-12

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