协同利用再生青路面和飞灰用于高柔性煤矿填充:性能优化和机制分析
Xiaoping Shao1,2, Xing Du1, Renlong Tang1,2
1College of Energy and Mining Engineering, Xi'an University of Science and Technology, Xi'an 710054, China.
Materials (Basel, Switzerland)
|January 28, 2026
概括
这项研究通过使用再生青路面 (RAP) 和飞灰来提高煤矿回填柔性. 球磨RAP优化了颗粒分级,提高了强度和柔性,同时满足了环境标准.
科学领域:
- 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.
- 环境工程 环境工程
背景情况:
- 在建筑材料中回收青路面 (RAP) 的利用是有限的.
- 煤矿填充材料需要增强的柔性和强度.
- 飞灰 (FA) 是一种常见的补充水泥材料.
研究的目的:
- 通过加入加工RAP来提高煤矿填充材料的可塑性.
- 调查不同比例的FA和球磨RAP (BM) 对回填性能的影响.
- 评估开发的回填区的机械,学和环境性能.
主要方法:
- 准备RAP飞灰水泥糊补充剂 (RFCPB) 用不同的FA/BM比率.
- 风病学性质测试,无限制压力强度 (UCS) 测试与变形监测.
- 微观结构分析和浸出毒性测试.
主要成果:
- RFCPB泥的质学遵循赫歇尔-布克利模型,降低FA/BM比率增加粘度和产量应力.
- 增加的BM比例通过将故障模式从脆性转变为柔性来增强柔性.
- 微结构分析显示了N-A-S-H和C-A-S-H凝形成,改善了UCS和延展性.
- 漂水度符合环境标准.
结论:
- 经过加工的RAP,特别是BM,有效地提高了煤矿回填的柔性和机械性能.
- 开发的RFCPB为RAP和FA废物利用提供了可持续的解决方案.
- 这项研究为改善回填性能和废物管理提供了理论基础.
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