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Engineering Concrete as a Carbon Sink for Sustainable Infrastructure

delete2025-12-16
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OA
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C
Chaolin Fang
V
Varenyam Achal *
DOI:10.1016/j.ccst.2025.100558delete
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Abstract

Abstract

En 中文
Concrete offers a unique opportunity to function as a scalable carbon sink by integrating physicochemical, mechanochemical, microbial, and magnesium-based pathways of CO₂ sequestration. This review synthesizes recent advances ranging from accelerated carbonation curing and pre-carbonated supplementary materials to bio-mediated mineralization and MgO-derived binders. Emerging applications—including 3D printing and biochar-enhanced aggregates—demonstrate measurable CO₂ uptake alongside mechanical and durability benefits. Life-cycle assessments consistently indicate 10–50% reductions in global-warming potential, yet challenges remain in scaling, energy demand, and long-term stability. Distinct from earlier reviews, this work unites mechanistic insights with industrial case studies and technoeconomic analysis to provide a roadmap for deploying carbon-sequestering concretes at scale. By coupling materials science, biotechnology, and digital monitoring with supportive policy frameworks, concrete can evolve from a major emitter into a durable carbon sink within circular-economy construction.
Keywords:
Carbon-sequestering concrete
CO₂ mineralization
Mechanochemical activation
Microbial-induced carbonate precipitation
Life-cycle assessment
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Journal

C
Carbon Capture Science and Technology
IF:
10.5
Papers:
492
Citations:
1.9K

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