使用响应表面方法在高温下对纤维增强回收聚合混凝土的性能分析
Muhammad Saqib Khan1, Muhammad Imran Khan2, Rafiq M Choudhry2
1National University of Sciences and Technology (NUST), Risalpur Campus, Risalpur, 24080, Pakistan.
Scientific reports
|April 15, 2025
概括
25%的再生材料 (RAC25) 和钢纤维 (SF) 的再生聚合混凝土 (RAC) 具有出色的耐火性和废物利用能力. 这种可持续材料为建筑应用提供了增强的高温性能.
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:
- 越来越多的火灾风险和建筑和拆除 (C&D) 废物需要可持续的建筑材料.
- 回收聚合混凝土 (RAC) 为废物利用和改进材料性能提供了一个潜在的解决方案.
研究的目的:
- 为了研究纤维增强循环聚合混凝土的高温性能.
- 评估RAC作为可持续,耐火建筑材料的潜力.
主要方法:
- 在高温 (23°C,300°C,600°C) 下测试了含有不同回收聚合物的混凝土混合物 (0%,25%,50%).
- 钢纤维 (SF) 和聚烯纤维 (PPF) 被纳入最有前途的RAC混合物 (RAC25).
- 评估了机械性能,包括压力和拉伸强度. 使用ANOVA和RSM进行了统计分析.
主要成果:
- 与传统混凝土和具有更高回收含量的RAC相比,RAC25在高温下显著改善了强度保留.
- 钢纤维增强 (RAC25-SF) 增强了拉伸强度和高温性能,而聚烯纤维 (RAC25-PPF) 在200°C以上显示出有限的好处.
- 纤维添加物提高了柔性,性和保持水分,有效地减轻了热引起的裂纹.
结论:
- 用钢纤维增强的再生聚合混凝土 (RAC25) 是耐火建筑的可行,可持续的材料.
- 这种方法有效地解决了消防安全问题和C&D废物管理的环境挑战.
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