用于深层土壤混合的活性材料和地质聚合物的设计:与模型土壤的相互作用
Faten Souayfan1,2, Emmanuel Roziere1, Michael Paris3
1École Centrale Nantes, Nantes Université, CNRS, GeM, UMR 6183, F-44000 Nantes, France.
Materials (Basel, Switzerland)
|August 10, 2024
概括
活性材料和地质聚合物料显示出深层土壤混合的前景. 最佳的混合物,特别是含有甲和渣的混合物,可以增强土壤的特性,降低水的敏感性.
科学领域:
- 材料科学 材料科学 材料科学
- 地质技术工程 地质技术工程
- 土木工程 土木工程是指土木工程.
背景情况:
- 深层土壤混合是一种需要有效结合剂的土壤改善技术.
- 活性材料 (AAM) 和地质聚合物为传统的水泥粘合剂提供了可持续的替代品.
- 了解这些结合剂在土壤中的微观结构发展和宏观性能至关重要.
研究的目的:
- 用于深层土壤混合应用的活性和地质聚合物料的特征.
- 为了评估土壤混合物的性能,使用这些具有不同土壤组成的料.
- 研究构成和水与固体比对土壤混合物的机械性能的影响.
主要方法:
- 合成和表征三种不同的活性/地质聚合物料,使用酸盐激活的甲甲和/或渣.
- 通过将料与含有不同粘土的模型土壤相结合来评估土壤混合性能.
- 使用Feret的方法确定压力强度的发展,在0.65到1.0的水/固体比率范围内.
主要成果:
- 将添加到料中减少了它们对水的敏感性,这是混合土壤的关键因素.
- 将土壤添加到料中,由于形成颗粒状骨架,增强了机械性能.
- 含有75%甲和25%渣的二元土壤混合物,H2O/Na2O比率为28-42,表现出协同反应性和土壤混合的潜力.
结论:
- 活性材料和地质聚合物料,特别是金属渣混合物,可用于深层土壤混合.
- 含量影响材料的水敏感性,而土壤添加提高了机械强度.
- 对于土壤混合物中较高的水与固体比率,需要进一步优化料成分.
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