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可扩展的电化学混凝土制造和闭环回收利用

Hanxiong Lyu¹, Zhenlin Li¹, Yang Liu¹

¹Department of Civil and Environmental Engineering and Research Centre for Resources Engineering Towards Carbon Neutrality, The Hong Kong Polytechnic University, Kowloon, Hong Kong.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|February 25, 2026

概括

这项研究引入了电化学回收 (ER) 技术,将混凝土废物再循环转化为有价值的资源,实现碳中和混凝土和大幅节省成本. 这种创新方法促进了建筑材料的循环经济.

科学领域:

可持续材料科学科学可持续材料科学
绿色化学绿色化学
循环经济工程循环经济工程

背景情况:

混凝土生产是二氧化碳排放和拆除废物的主要来源.
目前的混凝土回收方法导致下循环,限制了环境效益.
需要循环经济方法来解决混凝土的不可持续性.

研究的目的:

开发一种电化学驱动的回收 (ER) 策略,用于回收混凝土废物.
重生高价值资源,包括基前体和原始聚合物.
创建碳中和混凝土,其性能与传统混凝土相提并论.

主要方法:

开发了一种电化学驱动的回收 (ER) 工艺,用于分解水合水泥相.
回收材料被用于生产反向波特兰水泥和反向混凝土.
该过程在试点规模 (19.2t/年) 中得到了验证.

主要成果:

该战略实现了95.4%的循环效应.
全球变暖潜力从448.4减至-4.6公斤CO2-eq/m3,实现碳中和.
成本分析显示,与传统生产相比,成本具有竞争力,潜在的净节约高达94.8美元/m3.8米.

结论:

通过关闭材料和碳循环,ER战略为循环混凝土提供了一个可扩展的途径.
这种方法将混凝土拆除废弃物从生命周期结束的问题转变为有价值的资源.
电化学回收是可持续混凝土生产的可行和经济的解决方案.

关键词:

碳中和混凝土是碳中和的圆形建筑是指一个圆形的建筑.混凝土废弃物的回收利用电化学上循环的电化学上循环可持续性可持续性可持续性

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