屏蔽TBM中的两部分回填料的风湿性能和强度
Tae-Young Kim1, Geun U Ryu2, Hee-Hwan Ryu3
1Department of Civil Engineering, Sunchon National University, Sunchon, 57922, Republic of Korea.
Scientific reports
|December 10, 2025
概括
塑化水泥 (PLC) 和优化硬化剂与水 (H/W) 的比率提高了机械道工程的双组件填充接性能. 这些因素增强了浮力学和机械性质,这对于控制地面沉积至关重要.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 地质技术工程 地质技术工程
背景情况:
- 机械化道挖掘需要稳定的环状空隙填充,以防止地面沉积和细分移位.
- 双组分料对于控制化和压力强度在道填充中至关重要.
- 虽然磨砂颗粒高炉渣 (GGBFS) 是有前途的,但水泥类型和酸盐硬化剂剂量的联合影响需要进一步研究.
研究的目的:
- 调查水泥类型 (普通波特兰水泥与塑化水泥) 和硬化剂与水 (H/W) 比率对两组件填充料的性能的影响.
- 评估这些合剂的修形学,机械和微观结构特性.
- 了解水泥类型和酸盐硬化剂剂量对接性能的综合影响.
主要方法:
- 用OPC或PLC与本托尼特和稳定剂制备A组件,并使用B组件作为酸盐硬化剂.
- 评估质性质,包括出血,流量时间,凝时间,可塑性保留时间和流量.
- 使用XRD,SEM和MIP评估单轴压力强度 (UCS) 和微结构分析.
主要成果:
- 与普通波特兰水泥 (OPC) 相比,塑化水泥 (PLC) 的出血率较低,流量时间较短,凝时间较长,塑性保留时间较短,长期UCS较高.
- 增加H/W比率延长了凝时间,缩短了塑性保留时间,减少了流量,并增强了UCS.
- 微结构分析证实了结晶性降低和C-S-H凝形成增加,H/W比较高,与孔隙结构和压力强度的改善相关.
结论:
- 塑化水泥 (PLC) 与OPC相比,为两部分的回填提供了优越的质和机械性能.
- 优化硬化剂与水 (H/W) 的比率对于平衡凝,可加工性和强度发展至关重要.
- 这项研究提供了宝贵的见解,用于为有效的机械化道应用量身定制料配方.
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