<p>High-volume blended slag cements (HVBSC), with over 70% GGBS replacement, offer a promising route to reduce clinker use and utilise industrial by-products. This review examines HVBSC hydration mechanisms, reaction products (C-(A)-S-H, LDH), strength development, and durability challenges. Strategies to enhance early-age performance are discussed, alongside the need for multiphysics modelling. A conceptual framework is proposed to guide HVBSC development and scaling in suitable regional contexts.</p>

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Microstructural insights and technical challenges of effectively adopting high-volume GGBS in blended cements for low-carbon construction

  • Zengliang Yue,
  • Xiaohong Zhu

摘要

High-volume blended slag cements (HVBSC), with over 70% GGBS replacement, offer a promising route to reduce clinker use and utilise industrial by-products. This review examines HVBSC hydration mechanisms, reaction products (C-(A)-S-H, LDH), strength development, and durability challenges. Strategies to enhance early-age performance are discussed, alongside the need for multiphysics modelling. A conceptual framework is proposed to guide HVBSC development and scaling in suitable regional contexts.