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红色泥土基地质聚合物泥土的开发和性能,使固体废物的利用成为可能
Chenhao Zhao1, Xiaoqiang Dong2, Jiaxin Liang1
1College of Civil Engineering, Taiyuan University of Technology, No. 79 West Yingze Street, Taiyuan, Shanxi 030024, China.
Environmental research
|February 4, 2026
概括
这项研究开发了一种新的地质聚合物粘合剂,使用红色的泥和甲醇用于盾牌道. 优化的组合提供了出色的性能,耐用性和成本效益,与低碳战略保持一致.
科学领域:
- 地质聚合物化学和材料科学
- 土木工程和建筑材料.
- 可持续发展和低碳基础设施的发展.
背景情况:
- 盾牌道的建造需要专门的接材料,以获得稳定性和耐用性.
- 传统的接材料往往会对环境产生重大影响.
- 在地下工程中,需要可持续的,高性能的接解决方案.
研究的目的:
- 开发和优化地质聚合物接材料,使用红泥 (RM) 和煤系列金属 (CMK) 进行屏蔽道尾部接.
- 研究关键混合设计参数对地质聚合物接的新鲜,机械,微观结构和电气性能的影响.
- 为实际工程应用确定性能最优和成本最优的混合设计.
主要方法:
- 坐标实验设计 (三级,四因素) 系统地研究RM/CMK比率,SiO2/Na2O摩尔比率,Na2O含量和水与粘合剂比率.
- 第二阶多项式回归模型分析变量对接属性的影响.
- 使用电阻和电化学阻抗光谱 (EIS) 评估电性能.
- 使用X射线衍射 (XRD) 和扫描电子显微镜 (SEM) 进行微观结构和矿物学表征.
主要成果:
- 水与粘合剂比 (w/b) 和Na2O含量显著影响接流动性,稳定性和接时间.
- Na2O含量和SiO2/Na2O比率之间的协同作用增强了N-A-S-H凝的形成和机械强度.
- 优化的地质聚合物表现出紧的微观结构,受限的离子运输,以及出色的电化学稳定性,确保耐腐蚀性.
- 性能最佳的混合物达到9.12 MPa的28天强度,而成本最佳的混合物被确定为20.76美元/.
结论:
- 开发的地质聚合物接材料有效地满足屏蔽道接要求.
- 该材料平衡了性能,经济可行性和环境效益,显示了工程应用的巨大潜力.
- 这项研究通过利用红泥等工业副产品,为地下建筑的可持续实践做出了贡献.
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