释放回收物来提高三元混凝土混凝土的机械性能和耐久性
Solomon Oyebisi1, Mohammed Alquraish2
1Civil Engineering Department, The University of South Pacific, Suva, Fiji Islands.
PloS one
|November 5, 2025
概括
回收的雪花坚果灰和碎贝增强了混凝土. 这项研究发现了10%的重量. %替代改善了机械性能和耐久性,为波特兰石灰石水泥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:
- 水泥生产对二氧化碳排放作出了重大贡献,并耗尽了自然资源.
- 回收废物材料提供了一种可持续的方法来减轻环境影响.
- 探索环保的水泥替代品对于可持续建筑至关重要.
研究的目的:
- 为了研究使用雪梨坚果灰和碎贝作为波特兰石灰石水泥的部分替代品.
- 评估这些回收材料对三元混凝土机械性能,耐用性和可持续性的影响.
- 为了确定增强混凝土性能的最佳替代水平.
主要方法:
- 芝麻坚果灰和碎贝被用作5-15重量的水泥替代品. 百分比.百分比.百分比.百分比.百分比.百分比.
- 机械性能 (压缩性,性,分裂性抗拉强度) 在3-120天的固化年龄下进行了测试.
- 耐久性测试包括化学耐药性 (酸性,硫酸盐) 和在各种固化期间的干燥收缩.
主要成果:
- 有10重量的三级混凝土混凝土. 与对照混凝土相比,90%的替代品在90天内显示强度增加了3%左右.
- 对酸性和硫酸盐环境的耐药性提高了11-53%,在5-10重量时观察到. %的替换水平. %的替换水平.
- 在三元混凝土混凝土样品中,发现了9-34%的增强的干燥收缩阻力.
结论:
- 一个最佳的替代10重量. % 建议使用雪花坚果灰和碎贝.
- 这些回收材料有效地提高了三元混凝土的机械性能和耐久性.
- 利用这些废物材料为可持续的水泥替代品提供了一个可行的策略.
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