关于用二元混合灰和化多洛米特替代部分水泥的实验调查,用于增强C-25级混凝土性能
Dereje Tesfaye Woldesenbet1, Jemal Jibril Mohammed2, Solomon Demiss Negedu3
1Faculty of Materials Science and Engineering, Jimma Institute of Technology, Jimma University, Jimma, Ethiopia. dereje.tesfaye@ju.edu.et.
Scientific reports
|July 2, 2025
概括
这项研究表明,将包灰 (BA) 与化多洛米特粉 (CDP) 混合可以取代混凝土中高达30%的水泥. 这种可持续的方法增强了具体的具体.
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:
- 水泥生产的二氧化碳排放量高,成本上升,推动了对替代材料的需求.
- 由于环境和经济效益,农业工业废物如包灰 (BA) 被探索为部分水泥替代品.
- 现有的研究往往将BA利用率限制在15%,这表明有可能通过优化混合物更高的替代水平.
研究的目的:
- 为了研究二元混合灰 (BA) 和化多洛米特粉 (CDP) 作为C-25级混凝土中的部分水泥替代品的影响.
- 分析BA,CDP及其二元混合物的物理化学特性.
- 评估二元混合物对混凝土可加工性,定时间,压力强度,吸水能力和干燥密度的影响.
主要方法:
- 使用XRD,FTIR,SEM,XRF和DLS对BA和CDP进行物理化学表征.
- 准备混凝土混合物,其中含有不同百分比 (0-50%) 的二元混合BA和CDP作为水泥替代品.
- 66个标准混凝土立方体 (15x15x15厘米) 的造和固化7天和28天.
- 测试压力强度,可加工性,定时间,吸水率和干燥密度.
主要成果:
- BA和CDP的二元混合物,具有较小的颗粒大小,允许高达30%的水泥替代.
- 使用30%替换的混凝土在28天后达到36.7MPa的压力强度,超过了传统混凝土.
- 对物理化学性质的详细分析反映了混合材料的性能.
结论:
- 混凝土灰和化多洛米特粉末的二元混合是一种可行的策略,可以在混凝土中大量替代水泥.
- 优化的混合物可以提高混凝土的压力强度,同时提供环境和经济优势.
- 进一步研究颗粒大小减小和混合物优化可以释放更高的可持续水泥材料替代水平.
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