由于微生物矿物化的作用,对基于钢渣的水泥填充的宏观和中等特征进行实验研究
Fengwen Zhao1, Jianhua Hu2, Yinan Yang1
1School of Resources and Safety Engineering, Central South University, Changsha 410083, China.
Materials (Basel, Switzerland)
|July 13, 2024
概括
将钢渣和微生物添加到水泥填充中可以提高性能. 最佳的细菌溶液水平提高了强度22.10%,而过量则降低了强度,影响了孔隙特性.
科学领域:
- 材料科学 材料科学 材料科学
- 地质技术工程 地质技术工程
- 环境科学 环境科学
背景情况:
- 工业废物 - - 钢是一种工业废物,为微生物矿化提供了丰富的来源.
- 混凝土填充材料可以使用工业副产品和微生物处理来改善.
研究的目的:
- 研究用钢处理微生物对水泥回填性能的影响.
- 确定细菌溶液的最佳比例,以增强强度和微观结构.
主要方法:
- 强度测试 强度测试 强度测试 强度测试
- 核磁共振 (NMR) 是一种核磁共振技术.
- 扫描电子显微镜 (SEM) 的使用
- 在X射线衍射 (XRD) 中.
主要成果:
- 微生物矿化和水化反应同时发生.
- 细菌溶液比例低于50%,强度增加至22.10%.
- 过多的细菌溶液 (>50%) 将强度降低了21.41%并对毛孔特性产生了负面影响,其中50%产生了最低的毛孔度.
结论:
- 在最佳范围内,对以钢为基础的水泥后填充物进行微生物处理是可行的和有益的.
- 细菌溶液度至关重要;超过50%会阻碍水合并并降低强度.
- 强度与孔隙度,直径和圆度相反,突出显示了孔隙结构控制的重要性.
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