建筑垃圾的低碳价值化为地质聚合物混凝土的高价值回收聚合物
Lei Zhang1,2, Kai Wang2,3, Yuting Gao1
1Shenzhen Construction Engineering Group Co., Ltd., Shenzhen 518055, China.
Materials (Basel, Switzerland)
|March 14, 2026
概括
建筑垃圾可以转化为地质聚合物混凝土的回收聚合物 (RA). 粉碎的RA增强了比颗粒化的更强的混凝土强度,支持可持续的建筑.
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:
- 建筑垃圾 (CS) 是一个重要的废物流.
- 使用CS作为回收聚合物 (RAs) 提供环境和经济效益.
- 地质聚合物混凝土是一种可持续的替代传统混凝土.
研究的目的:
- 调查从CS生产RA的情况.
- 评估CS衍生RAs对地质聚合物混凝土机械性能的影响.
- 为了比较通过磁盘颗粒化和粉碎颗粒化生产的RA的性能.
主要方法:
- 用两种方法生产基于CS的RA:盘颗粒化和粉碎颗粒化.
- RAs的表征包括粒子大小分布分析.
- 包含RA的地聚合物混凝土样本在7,21和28天后进行了压力强度测试.
主要成果:
- 与盘颗粒化RA相比,用粉碎RA的地聚合物混凝土获得了更高的压力强度 (例如,在28天后42.3-43.5MPa),而不是盘颗粒化RA (例如,在28天后36.9-37.1MPa).
- 粉碎的RA,由于它们的角度形状和更高的密度,提高了混凝土的结构完整性.
- 磁盘颗粒化RA显示出更高的孔隙性和更光滑的表面,导致机械性能降低.
结论:
- CS是生产结构地聚合物混凝土高价值RA的可行资源.
- 在提高混凝土压力强度方面,破碎的CS衍生RA优于盘颗粒式RA.
- 这种方法促进了循环经济,减少了对自然聚合物的依赖,并降低了建筑业的碳足迹.
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