用废发动机残留增强泡混凝土的微观结构和机械特征
1Department of Civil and Environmental Engineering, College of Engineering, Majmaah University, Al Majmaah, 11952, Saudi Arabia. a.alzlfawi@mu.edu.sa.
Scientific reports
|August 29, 2025
概括
废发动机残留物 (SAER) 显著提高了泡混凝土 (FC) 的性能. 增加2.5%的SAER可以最大限度地提高机械强度和热绝缘,使其成为轻量化建筑的理想选择.
科学领域:
- 材料科学
- 土木工程
- 可持续建设
背景情况:
- 泡混凝土是一种多功能轻质材料.
- 回收废发动机废弃物等工业副产品有助于促进可持续性.
- 用回收材料优化FC性能对于建筑创新至关重要.
研究的目的:
- 研究SAER对泡混凝土的新鲜,机械,热和微观结构性能的影响.
- 确定最佳的SAER含量以提高FC性能.
- 评估SAER作为泡混凝土生产中的可持续添加剂.
主要方法:
- 在目标密度为900和1100公斤/立方米的SAER百分比 (1.5%,2.5%,5.0%) 中,制备了泡混凝土样本.
- 进行了标准的ASTM测试,以评估新鲜密度,可加工性,压力强度,曲强度和导热性.
- 使用X射线衍射 (XRD) 和扫描电子显微镜 (SEM) 进行微结构分析.
主要成果:
- 添加SAER提高了新鲜密度和早期扩张,但降低了可加工性.
- 使用2. 5%的SAER可以达到最佳性能,可显著提高压力 (高达242. 9%) 和曲强度 (高达68. 8%).
- 热导率降低了44%,表明隔热性能提高. 在2. 5%的SAER下,XRD和SEM证实了微观结构的改善和孔隙性的减少.
结论:
- 2.5%的SAER是最大限度地提高泡混凝土的机械强度和隔热性能的最佳剂量.
- SAER有效地提高了泡混凝土的性能,为建筑提供了可持续的替代品.
- 这项研究表明利用工业废物开发高性能轻质水泥材料的潜力.
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