PERFORMANCE-BASED CARBON FOOTPRINT ASSESSMENT OF CONCRETE INCORPORATED POWDERED CRUSHED TILE AS PARTIAL CEMENT REPLACEMENT
粉砕タイルをセメント代替として用いたコンクリートの性能ベース炭素フットプリント評価 (AI 翻訳)
F. Williams, K. G. Avre, Daniel Nnaemeka Nwaigwe, Adedeji Paul Adeleye
🤖 gxceed AI 要約
日本語
本研究は、粉砕タイル（PCT）をセメントの一部代替として用いたコンクリートの環境性能と力学性能を、性能ベースのLCA手法で評価。0～30%の代替率で、26.6%の炭素削減を達成したが、圧縮強度は低下。5～10%の代替率が最適範囲と示唆された。
English
This study evaluates concrete with powdered crushed tile (PCT) as partial cement replacement using performance-based LCA. Up to 26.6% carbon reduction achieved at 30% substitution, but compressive strength decreases. Optimal sustainability range is 5-10% PCT.
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
建設分野の脱炭素化が急務な日本において、廃タイルの有効活用は循環型社会とGXの両方に貢献する。SSBJや有報でのScope3削減にも直結する実用的知見。
In the global GX context
As concrete is a major emitter globally, this study offers a circular economy approach to reduce embodied carbon. Relevant for ISSB/TCFD disclosure of construction materials' lifecycle emissions.
👥 読者別の含意
🔬研究者:Provides a methodology for performance-normalised carbon assessment in concrete with recycled materials.
🏢実務担当者:Concrete producers can use the optimal 5-10% tile replacement to reduce carbon footprint without major strength loss.
🏛政策担当者:Supports policies promoting recycled construction waste for decarbonization; can inform embodied carbon regulations.
📄 Abstract（原文）
This study evaluates the environmental and mechanical performance of concrete incorporated Powdered Crushed Tile (PCT) as a partial replacement for Ordinary Portland Cement (OPC) using a performance-based Life Cycle Assessment (LCA) approach. A cradle-to-gate analysis compliant with ISO 14040 and ISO 14044 standards was conducted, considering raw material extraction, cement production, PCT processing, transportation, and concrete batching. Global Warming Potential (GWP100) was assessed per cubic meter of concrete for replacement levels between 0% and 30%. Results indicate a near-linear reduction in embodied carbon, achieving up to 26.6% reduction at 30% PCT substitution. However, compressive strength decreased with increasing replacement levels. Performance-normalised carbon analysis identified an optimal sustainability range of 5–10% PCT, where carbon savings outweigh strength reductions. Sensitivity analysis revealed that cement emission factors dominate uncertainty, while transportation and PCT processing have minimal influence. The findings demonstrate that moderate clinker substitution using recycled ceramic waste can significantly reduce concrete’s carbon footprint without compromising structural performance, supporting sustainable and circular construction practices.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.33003/fjs-2026-1007-5178first seen 2026-06-29 06:36:31
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