基于地聚合物的PFSS的机械性质和微观结构,这些PFSS是从挖掘的岩中合成的
Shujie Chen1, Hengchun Zhang2, Zhengzhou Yang1
1College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China.
Materials (Basel, Switzerland)
|January 11, 2025
概括
这项研究使用复合地质聚合物系统 (CFGC) 合成了预混合流化固化土壤 (PFSS). 最佳的CFGC剂量可以提高PFSS的流动性和机械强度,形成一个稳定的三维结构.
科学领域:
- 地质技术工程 地质技术工程
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
背景情况:
- 预混合的液化固化土壤 (PFSS) 提供了诸如可抽取性和快速定位等实用优势.
- 挖掘的岩是土壤固化的潜在资源.
研究的目的:
- 通过使用一种新的水泥飞灰磨砂颗粒高炉-碳化物 (CFGC) 地质聚合物系统来合成PFSS.
- 研究水固体比率和CFGC剂量对PFSS流动性和机械性能的影响.
- 为了描述合成的CFGC-PFSS的微观结构.
主要方法:
- 使用和CFGC粘合剂合成PFSS.
- 水固体比率和CFGC剂量的系统变化.
- 在28天评估流动性和机械强度 (柔性和压力).
- 凝固土的微观结构分析.
主要成果:
- 增加水固体比率 (0.46至0.54) 提高了流动性,但降低了28天的屈曲和压力强度.
- 增加CFGC剂量 (15%至25%) 改善了流动性,并显著增加了28天的柔性和压力强度 (分别为1.7x和1.6x).
- 微观结构分析显示了针状的AFt,C-S-H凝和C-(A) -S-H凝形成,与土壤颗粒一起创建了一个强大的3D网络.
结论:
- 该CFGC系统有效地将PFSS从挖掘的岩石中合成.
- 优化水固体比率和CFGC剂量对于平衡流动性和机械性能至关重要.
- 液化产品的密集,网状结构的形成决定了CFGC-PFSS的强度发展.
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