红色泥的微观结构演变和机械性能增强结合了高强度混凝土
Chava Venkatesh1, Chereddy Sonali Sri Durga1, Takkellapati Sujatha2
1Department of Civil Engineering, CVR College of Engineering, Ibrahimpatnam, 501510, Telangana, India.
Scientific reports
|July 23, 2025
概括
将10%的红泥 (RM) 加入到高强度混凝土中,可以显著提高机械性能和微观结构完整性. 这种最佳的RM水平提高了强度和耐久性,为混凝土应用提供了可持续的解决方案.
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.
- 建筑材料 建筑材料
背景情况:
- 红泥 (Red Mud,简称RM) 是一种工业副产品,存在处理方面的挑战.
- 在建筑行业中,对工业副产品的可持续利用至关重要.
- 高强度混凝土需要先进的材料解决方案,以提高性能.
研究的目的:
- 评估红色泥对高强度混凝土性能的影响.
- 为了确定优越的机械和微观结构特性,最佳的红泥替代水平.
- 评估红泥混凝土的长期性能和阶段演变.
主要方法:
- 准备和测试五种混凝土混合物,其中0-20%的红色泥土替代物.
- 180天的机械性能评估 (压力,分裂拉力,屈曲强度).
- 使用X射线衍射 (XRD),扫描电子显微镜 (SEM) 和能量分散X射线 (EDX) 的微结构和相位分析.
主要成果:
- 10%的红泥替代剂显著改善了强度:28.96% (压力),13.66% (分裂拉力) 和15.45% (弹性) 在180天后.
- XRD分析显示波特兰石减少,强度贡献阶段增加.
- SEM和EDX证实了增强的矩阵密度,改善的界面过渡区,以及有利的Ca/Si比率 (0.9475),表明稳定的C-S-H凝形成.
结论:
- 10%的红泥是提高高强度混凝土性能的最佳替换门.
- 红泥的结合导致了机械强度和微观结构发展的显著改善.
- 这项研究为在高强度混凝土中可持续使用红泥的工业规模应用提供了框架.
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