Scholarlink

<p>Ordinary Portland Cement (OPC) is responsible for approximately 7–8% of global anthropogenic CO₂ emissions, driven by both calcination of limestone (process emissions) and fossil-fuel combustion for high-temperature clinkerization. This scale of embodied carbon makes cement one of the most carbon-intensive bulk construction materials on earth. The global transition to lower-carbon infrastructure therefore requires binder systems that can decouple mechanical performance and durability performance from clinker intensity. The present study performs a meta-analysis of Limestone Calcined Clay Cement (LC³) as a structural binder, using a compiled dataset of more than 400 datapoints from peer-reviewed literature, academic trials, field pilot placements, and experimental programs digitized and normalized by the author. The integrated dataset spans compressive strength development, clinker substitution efficiency, hydration thermodynamics, chemically bound water evolution, porosity and critical pore diameter, effective diffusion (chloride ingress surrogates), carbonation behaviour under both accelerated and natural exposure, 50-year service-life cover predictions, and cradle-to-gate embodied CO₂ intensity. The study introduces a new dimensionless descriptor, the Hydration-Porosity Synergy Index (HPSI), formulated to quantify how efficiently an LC³ binder converts hydration (bound water formation) into transport-resistant microstructure despite high clinker substitution. HPSI explicitly links chemically bound water, effective porosity (i.e., transport-relevant porosity rather than total porosity), and clinker-equivalent reactivity. Across the compiled dataset, HPSI displays strong correlation with key durability indicators such as RCPT-derived transport indices and natural carbonation coefficients.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A Meta-analytical Evaluation of the Performance Parameters of Limestone Calcined Clay Cement

  • 期刊论文

  • 发表日期：

    2026年7月20日

查看全文
  • Vaibhav Thakar,
  • Ankush Agarwal,
  • Aashay Kotecha,
  • Devang Karnavat,
  • Jigisha Vashi

摘要

Ordinary Portland Cement (OPC) is responsible for approximately 7–8% of global anthropogenic CO₂ emissions, driven by both calcination of limestone (process emissions) and fossil-fuel combustion for high-temperature clinkerization. This scale of embodied carbon makes cement one of the most carbon-intensive bulk construction materials on earth. The global transition to lower-carbon infrastructure therefore requires binder systems that can decouple mechanical performance and durability performance from clinker intensity. The present study performs a meta-analysis of Limestone Calcined Clay Cement (LC³) as a structural binder, using a compiled dataset of more than 400 datapoints from peer-reviewed literature, academic trials, field pilot placements, and experimental programs digitized and normalized by the author. The integrated dataset spans compressive strength development, clinker substitution efficiency, hydration thermodynamics, chemically bound water evolution, porosity and critical pore diameter, effective diffusion (chloride ingress surrogates), carbonation behaviour under both accelerated and natural exposure, 50-year service-life cover predictions, and cradle-to-gate embodied CO₂ intensity. The study introduces a new dimensionless descriptor, the Hydration-Porosity Synergy Index (HPSI), formulated to quantify how efficiently an LC³ binder converts hydration (bound water formation) into transport-resistant microstructure despite high clinker substitution. HPSI explicitly links chemically bound water, effective porosity (i.e., transport-relevant porosity rather than total porosity), and clinker-equivalent reactivity. Across the compiled dataset, HPSI displays strong correlation with key durability indicators such as RCPT-derived transport indices and natural carbonation coefficients.