低炭素コンクリートにおけるもみ殻灰とシリカフューム:物理化学的特性・力学性能・エンボディドカーボン・廃棄物価値化に関する包括的レビュー
Rice husk ash and silica fume in low carbon concrete: A comprehensive review of physicochemical properties, mechanical performance, embodied carbon, and waste valorization (原題)
Harpreet Singh, Aditya Kumar Tiwary
🤖 gxceed AI 要約
日本語
もみ殻灰(RHA)とシリカフューム(SF)を混合した低炭素コンクリートの実験研究を横断的にレビューした論文。SFは5〜10%置換で7〜28日後に圧縮強度が25〜35%向上、RHAは10〜15%置換で28〜90日後に15〜25%向上し、後期強度発現の可能性を示す。両者とも好適な置換率で地球温暖化ポテンシャルを約20〜50%削減できる。材料・性能・環境のトレードオフを統合比較し、SCM選定の実務的指針を提示する。
English
A comprehensive review of experimental studies on low-carbon concrete using rice husk ash (RHA) and silica fume (SF). SF at 5–10% replacement raised compressive strength 25–35% at 7–28 days, while RHA at 10–15% gave 15–25% gains at 28–90 days, indicating later-age reactivity. Both achieved roughly 20–50% global warming potential reductions at favourable replacement levels, with integrated material-performance-environment trade-off guidance for SCM selection.
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
建設セクターのScope 3(購入した商品・サービス、資本財)排出量は日本の製造業・建設業の開示において主要な論点であり、SSBJ基準対応でサプライヤーのエンボディドカーボン把握が求められる。本レビューはセメント代替材の性能と炭素削減のトレードオフを定量化しており、建設会社が調達段階で低炭素材料を選定する際の基礎資料となる。
In the global GX context
Embodied carbon in construction materials is a growing focus under ISSB/CSRD Scope 3 disclosure and green building standards. This review's normalized comparison of SCM replacement levels against strength and GWP gives disclosure teams and procurement functions a quantitative basis for low-carbon material specifications and supplier engagement.
👥 読者別の含意
🔬研究者:SCM置換率と強度・GWPの関係を整理した比較データとして、低炭素セメント研究の出発点にできる。
🏢実務担当者:調達・建設部門が低炭素コンクリートの仕様検討やサプライヤーへのエンボディドカーボン要求に活用できる。
🏛政策担当者:建設資材の炭素集約度規制やグリーン公共調達基準の設計において、SCM普及の定量的根拠を提供する。
📄 Abstract(原文)
Utilization of supplementary cementitious materials (SCMs) presents an opportunity for achieving lower carbon intensity in cement while upholding concrete performance; particularly, silica-rich rice husk ash (RHA) and silica fume (SF) provide benefits both in terms of performance and resource efficiency. This review, therefore, provides a comprehensive summary of experimental studies conducted on RHA- and SF-based concrete, covering their material properties, mechanical performance aspects, strength-enhancement mechanisms as well as their contribution toward environmental sustainability. Normalized performance trends are presented in tabular and graphical forms, enabling a comparative assessment of the results for compressive, split-tensile, and flexural strength across replacement levels and curing ages. The review also assesses life cycle assessment (LCA)-based CO 2 reduction, embodied carbon behaviour, waste valorization and circular-economy effects. Across the studies reviewed, it was observed that 5–10% SF replacement resulted in a higher compressive strength of 25–35% after 7–28 days, but RHA at 10–15% registered 15–25% increased compressive strength between 28 and 90 days which suggests its potential for later-age activity. Both RHA and SF were associated with global warming potential reductions of about 20–50% at favourable replacement levels. The integrated comparison of materials-performance-environment trade-offs is designed to provide practical guidance on SCM selection, performance optimization and low-carbon concrete development.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.nxsust.2026.100565first seen 2026-10-25 04:46:09 · last seen 2026-11-06 04:50:04
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