绿色建筑采用可持续泡砂,利用回收聚乙烯四甲酸废料,增强绝热和耐久性
Md Azree Othuman Mydin1, Paul O Awoyera2, Ziad N Taqieddin3
1School of Housing, Building and Planning, Universiti Sains Malaysia, 11800, Penang, Malaysia. azree@usm.my.
Scientific reports
|September 29, 2025
概括
回收聚乙烯二甲酸盐 (PET) 废弃物可以作为泡砂中的沙子替代品. 这种可持续的方法增强了保温,并促进了建筑中的循环经济原则.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续建筑 可持续建筑
- 废物管理 废物管理
背景情况:
- 越来越多的环境问题涉及塑料废物,特别是聚乙烯四甲酸盐 (PET).
- 需要可持续的建筑材料来减少对原始资源的依赖,并提高建筑物的能源效率.
研究的目的:
- 调查使用再生PET废物的可行性,作为泡砂中的部分沙子替代品.
- 评估PET对泡砂的热,机械和耐久性能的影响.
- 促进建筑行业的循环经济实践.
主要方法:
- 开发了六种泡砂混合物,具有不同的PET替换比率 (0-25%).
- 热导率,密度,压力,曲和拉力强度的表征.
- 通过吸水和离子透测试来评估耐用性.
- 微观结构分析检查孔隙结构和粒子分散.
主要成果:
- 加入PET显著改善了隔热,将导热率降低了高达17% (0.31到0.26W/mK).
- 密度降低了高达15%,压力强度在25%PET下从12.5MPa到9.8MPa不等.
- 耐久性通过降低吸水率 (降低20%) 和离子透在更高的PET含量增强.
- 微观结构分析显示了精细的孔隙结构和均的PET颗粒分散.
结论:
- 回收PET废物是泡砂中部分沙子替代的可行的可持续替代品.
- 聚乙烯 (PET) 增强了保温和耐久性,使其适用于非结构应用.
- 该研究支持通过废物回收利用的环保建筑和循环经济原则.
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