将挖掘的土壤废物回收成低碳活性材料
Chenchen Luan1, Ao Zhou1, Tiejun Liu1
1Guangdong Provincial Key Laboratory of Intelligent and Resilient Structures for Civil Engineering, Harbin Institute of Technology, Shenzhen, 518055, China.
Waste management (New York, N.Y.)
|February 22, 2025
概括
本研究提出了一种可持续的方法,用于将挖掘土壤废物回收成低碳建筑材料. 优化的配方大大降低了二氧化碳排放,并为传统水泥提供了具有成本效益的替代品.
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:
- 城市化产生大量的挖掘土壤废物,这给环境和处置带来了挑战.
- 可持续的回收方法对于管理建筑和拆除废物至关重要.
- 开发低碳建筑材料对于减少建筑行业对环境的影响至关重要.
研究的目的:
- 为挖掘的土壤废物开发一种可持续的回收方法.
- 使用转化土壤废物制造低碳活性建筑材料.
- 优化配方以提高性能和减少环境足迹.
主要方法:
- 烧焦土壤废物以产生甲甲.
- 补充了磨砂颗粒高炉渣和未化的土壤.
- 活性材料的生产和通过强度,花和微观结构测试进行评估.
- 初步的碳足迹和经济评估.
主要成果:
- 只有活性化土壤显示中等强度,但高花风险.
- 通过改变活性产品,将渣纳入改善了机械性能和抗花效应.
- 优化的配方 (52.5%的化土壤,30%的渣渣,17.5%的未化土壤) 实现了高的早期压力强度 (1天内40MPa).
- 与传统的混合粘合剂相比,优化粘合剂的二氧化碳排放量减少了42%.
结论:
- 开发的活性材料是传统水泥基粘合剂的有希望的可持续替代品.
- 将挖掘的土壤废物回收成建筑材料有效减少二氧化碳排放和废物.
- 该方法提供机械性能和环境效益,解决关键的可持续性挑战.
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