对玄武岩和钢纤维增强废弃物岩石混凝土的性能进行比较研究
Jianbo Xu1, Hao Li2, Shibing Huang3
1China First Metallurgical Group Co., Ltd., Wuhan, China.
Scientific reports
|April 29, 2025
概括
这项研究将废弃岩石转化为可持续的混凝土,使用基岩纤维增强混凝土 (BFRC) 和钢纤维增强混凝土 (SFRC). BFRC提供了一个更具成本效益和环保的替代方案,具有可比的机械性能.
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.
- 可持续建筑 可持续建筑
背景情况:
- 建筑材料通常依赖于处女资源,导致环境问题.
- 废岩石带来了严重的处置挑战和未充分利用的资源.
- 开发可持续的混凝土替代品对于建筑行业至关重要.
研究的目的:
- 研究利用废岩作为纤维增强混凝土中的聚合物的可行性.
- 为了比较基岩纤维增强混凝土 (BFRC) 和钢纤维增强混凝土 (SFRC) 的性能.
- 确定最佳纤维剂量以提高混凝土性能,并评估经济和环境影响.
主要方法:
- 使用废岩石聚合物制备BFRC和SFRC.
- 机械性能测试 (拉力,屈曲强度).
- P波速度,沉测试和扫描电子显微镜 (SEM) 分析.
主要成果:
- 确定了最佳纤维剂量:40公斤/立方米的钢纤维和2公斤/立方米的玄武岩纤维.
- BFRC和SFRC都满足了强度要求;钢纤维增强了分别22.2%和27.4%的拉伸和曲强度;玄武岩纤维增长了20.2%和17.4%.
- 与BFRC相比,SFRC的强度更高,但生产成本和二氧化碳排放明显更高.
结论:
- 结合最佳纤维剂量可以通过裂桥梁和网络形成来增强混凝土的微观结构和机械性能.
- 使用废岩的玄武纤维增强混凝土是更有利的选择,因为成本更低,环境影响更大.
- 这项研究为废岩在可持续建筑材料中的利用提供了基础.
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