优化混凝土的可持续性用灰和石灰及其对机械性能和耐久性的影响
Muhammad Adeel Khan1, Boshan Zhang1, Mahmood Ahmad2,3
1College of Civil Engineering, Department of Bridge Engineering, Tongji University, Shanghai, 200092, China.
Scientific reports
|January 8, 2025
概括
本研究探讨在混凝土中使用甘包灰 (SCBA) 和石灰 (SD),以减少对环境的影响. 优化的混合物显示强度有所提高,但吸水率增加,提供了可持续的替代品.
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.
- 环境科学 环境科学
背景情况:
- 工业和城市废物管理对于环境可持续性至关重要.
- 水泥生产对温室气体排放作出了重大贡献.
- 需要环保的建筑材料来应对全球变暖.
研究的目的:
- 评估使用甘包灰 (SCBA) 和石灰 (SD) 作为混凝土中水泥和沙子的部分替代品.
- 评估这些生态强度混凝土混合物的经济和环境效益.
- 研究SCBA和SD对混凝土可加工性,机械性质和耐久性的影响.
主要方法:
- 对生态强度混凝土混合物 (ES-28和ES-34) 进行实验研究,SCBA和SD的比例不同.
- 分析可加工性,压力强度,拉伸强度,屈曲强度和吸水能力.
- 响应表面分析用于混合物优化.
主要成果:
- 对于ES-28具有9%的SCBA和50%的SD,强度与对照相似,曲强度增加6.86%.
- 对于ES-34具有9%的SCBA和50%的SD,强度有所改善:压力有10.16%,拉力有11.68%,柔性有5.22%.
- 在最佳的SCBA/SD比率下,吸水量显著增加 (ES-28的31.61%,ES-34的22.32%).
结论:
- 在混凝土中使用SCBA和SD为传统材料提供了一个可持续的替代方案.
- 优化的混合物显示出改善机械性能的潜力,但耐用性 (吸水能力) 需要仔细考虑.
- 进一步的研究和响应表面分析可以指导开发环保混凝土.
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