使用回收飞生产高性能地质聚合物:对填埋飞管理的可持续方法?
Aamar Danish1, Anthony S Torres1
1Department of Engineering Technology, Texas State University, San Marcos, TX 78666, USA.
Waste management (New York, N.Y.)
|June 4, 2025
概括
回收飞灰 (RFA) 可以与地面颗粒高炉渣一起使用,以创建可持续的地质聚合物. 这些材料具有良好的强度和耐用性,有助于废物管理和建筑中的循环经济.
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:
- 在可持续建筑材料中对飞灰 (FA) 的日益增长的需求与垃圾填埋场中的大量库存形成鲜明对比.
- 垃圾填埋的FA有助于环境污染和灾害.
- 地质聚合物技术为废物管理提供了环境和财务上的好处.
研究的目的:
- 研究使用回收飞 (RFA) 和地面颗粒高炉渣 (GGBFS) 制造高性能地质聚合物.
- 通过热水固化评估基于RFA的地质聚合物的特性和性能.
主要方法:
- 使用不同比例的RFA和GGBFS合成地质聚合物.
- 热水固化方法用于地质聚合.
- 评估地质聚合物性能,包括压力强度,运输性能,耐久性和微观结构分析.
主要成果:
- 地质聚合物强度在很大程度上不受高达60%的RFA替代的影响;80%的RFA产生中等级材料.
- 包括20-80%的RFA导致了28天的压力强度在81.1到38MPa之间.
- RFA改善了干燥收缩和高温耐受性,没有漏问题和有效的重金属固定.
结论:
- 可以使用RFA生产高性能地质聚合物来管理填埋的FA.
- 基于RFA的地质聚合物有助于减少环境负担,并促进建筑行业的循环经济.
- 建议采用最佳的RFA含量 (40-60%),以获得足够的化学耐药性,平衡性能和废物利用.
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