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May 6, 2026RSC AdvancesOpen Access

Interfacial chemistry of biochar-modified cementitious materials: mechanisms of pore structure refinement, chloride immobilization, and carbon sequestration

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Authors

LWLewei WangLSLiwei Song

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Overview

Review discusses mechanisms of pore structure refinement and carbon sequestration in biochar-modified cement materials, highlighting key durability trade-offs.

Key Points

  • This review aims to explore how biochar-modified cementitious materials can enhance sustainability and performance through various mechanisms.
  • Reviewed mechanistic evidence of biochar interactions with Portland cement systems.
  • Evaluated pathways affecting pore structure, chloride immobilization, and carbon sequestration.
  • Proposed priorities for rational mix design and field validation.
  • Surface oxygen groups in biochar promote calcium enrichment and densify the interfacial transition zone.
  • Densification reduces connectivity and lowers diffusion metrics for chloride exposure.
  • Biogenic carbon storage and increased calcium carbonate formation are highlighted as climate benefits.

Cite This Study

Wang et al. (2026) studied this question.

synapsesocial.com/papers/69fada7f03f892aec9b1e3dahttps://doi.org/10.1039/d6ra00419a
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