Low-carbon, high-strength concrete with high-volume Icelandic volcanic pozzolans and silicomanganese slag: A response surface methodology approach to predictive strength design
高炉スラグとアイスランド産火山性ポゾランを大量使用した低炭素・高強度コンクリート：応答曲面法による強度予測設計 (AI 翻訳)
DS Hettiarachchi, S. M. Samindi M. K. Samarakoon, Kjell Tore Fosså
🤖 gxceed AI 要約
日本語
本研究は、アイスランド産火山性ポゾラン（VPI）とシリコマンガンスラグ（SiMn）をセメント代替として50%使用した低炭素・高強度コンクリートの配合最適化を、応答曲面法（RSM）を用いて行った。水結合材比が強度に、超流動化剤がワーカビリティに支配的であることを示し、予測モデルは誤差7%以内で検証された。50%VPIで107MPa、40%VPI+10%SiMnで103MPaの28日強度を達成し、持続可能な高強度コンクリートの可能性を示した。
English
This study optimizes low-carbon high-strength concrete with 50% cement replacement using Icelandic volcanic pozzolan (VPI) and silicomanganese slag (SiMn) via response surface methodology. Water-to-binder ratio dominates strength, superplasticizer affects workability; models validated within 7% error. Achieved 107 MPa (50% VPI) and 103 MPa (40% VPI+10% SiMn) at 28 days, demonstrating sustainable high-strength concrete potential.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本の建設業界では、カーボンニュートラル達成に向けてセメント代替材料の活用が重要であり、本研究成果は国産の産業副産物や天然ポゾランを用いた低炭素コンクリートの設計に示唆を与える。ただし、アイスランドの材料に特化しており、日本の材料への適用には追加検討が必要。
In the global GX context
This research contributes to global efforts to decarbonize the construction sector by demonstrating high-volume SCM replacement in high-strength concrete, aligning with ISSB/CSRD climate disclosure expectations for embodied carbon reduction. The RSM-based predictive framework offers a transferable methodology for optimizing low-carbon concrete mixes, supporting transition finance and green building standards.
👥 読者別の含意
🔬研究者:Provides a validated RSM framework for optimizing multi-component SCM systems, useful for further research on low-carbon concrete mix design.
🏢実務担当者:Offers a data-driven approach to formulate high-strength low-carbon concrete, potentially reducing embodied carbon in construction projects.
🏛政策担当者:Highlights the feasibility of high-volume SCM replacement, supporting policies that promote low-carbon construction materials.
📄 Abstract（原文）
The interaction and combined effects of emerging natural and industrial supplementary cementitious materials (SCMs) at high-volume cement-replacement levels remain insufficiently understood, particularly for developing low carbon concrete without compromising mechanical performance. Although high-volume SCM replacement offers a practical route to reducing the CO₂ footprint of cementitious materials, the performance optimization of high-volume binary and ternary SCM binder systems remains limited. This study develops and validates predictive models for the fresh and hardened properties of low-carbon high-strength concrete incorporating Icelandic volcanic pozzolanic material (VPI) and silicomanganese (SiMn) slag at a total cement replacement level of 50% by weight. Response Surface Methodology (RSM), based on a Box–Behnken design, was employed to evaluate the effects of VPI–SiMn ratio, water-to-binder ratio and superplasticiser dosage on compressive strength (7 and 28 days), splitting tensile strength, elastic modulus, and workability. ANOVA confirmed model significance, identifying the water-to-binder ratio as the dominant factor governing strength and the superplasticiser dosage as the factor influencing workability, while allowing flexibility in the proportions of both SCMs within the design window. Sensitivity analysis quantified the contributions of linear, interaction, and quadratic terms, enabling reliable predictions. Validation experiments showed strong agreement with model predictions with deviation below 7%. A binary system with 50% VPI achieved a 28-day cube compressive strength of 107 MP, while a ternary system with 40% VPI and 10% SiMn slag attained 103 MPa with desirable fresh properties. These findings demonstrate that sustainable high-strength concrete can be produced using VPI and SiMn slag at 50% cement replacement and establish a robust framework for its performance-based optimisation.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.istruc.2026.112807first seen 2026-08-16 04:59:37
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