持続可能なコンクリートにおける再生材・廃棄物材料：環境便益、工学的性能、課題、今後の方向性に関する批判的レビュー
Recycled and Waste Materials in Sustainable Concrete: A Critical Review of Environmental Benefits, Engineering Performance, Challenges, and Future Directions (原題)
(著者不明)
🤖 gxceed AI 要約
日本語
建設・産業・農業・都市廃棄物をコンクリート材料として再利用する研究を批判的にレビューした論文。再生骨材や産業副産物は天然資源消費とセメント使用量を削減し、埋立廃棄物と embodied carbon を減らし得るが、ワーカビリティ低下や強度・耐久性のばらつきなどの課題も伴う。LCAに基づく評価と、AI支援による配合設計やマルチ廃棄物利用が今後の研究方向として示される。
English
A critical review of using recycled and waste materials—recycled aggregates, industrial by-products, agricultural ashes, glass, plastic, rubber, and quarry waste—as partial replacements in concrete. It finds potential reductions in natural resource use, waste disposal, and embodied carbon, but notes challenges in workability, strength, durability, and material variability. Future work should combine multi-waste mixes, LCA-based optimization, and AI-assisted mix design.
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
建設業の脱炭素・資源循環はSSBJのScope 3や建設資材調達の開示と間接的に関わるが、本論文は制度・開示ではなく材料工学・LCAの知見が中心。日本企業が低炭素コンクリートの調達基準やサプライチェーン排出量算定を検討する際の技術的裏付けとして参照価値がある。
In the global GX context
While not a disclosure paper, it speaks to the embodied-carbon and circularity dimensions increasingly covered under ISSB/CSRD Scope 3 and construction-sector transition plans. It offers evidence for procurement standards and LCA-based material selection in low-carbon concrete.
👥 読者別の含意
🔬研究者:再生材コンクリートの性能とLCA評価の研究ギャップを整理する基礎文献として有用。
🏢実務担当者:低炭素コンクリート調達や廃棄物再利用の際の性能・耐久性リスクと評価手法の参考になる。
🏛政策担当者:建設廃棄物の再資源化促進とembodied carbon規制を設計する際の技術的根拠を提供する。
📄 Abstract（原文）
Background: Sudden Infant Death Syndrome (SIDS) and Sudden Unexplained Infant Deaths The rapid growth of infrastructure and urban development has resulted in increasing consumption of natural resources and generation of large quantities of construction, industrial, agricultural, and municipal waste. The incorporation of waste and recycled materials into concrete has therefore emerged as a promising approach for reducing the environmental impacts of conventional concrete and promoting sustainable and circular construction practices. This review critically examines the utilization of recycled concrete aggregates, industrial by-products, agricultural ashes, waste glass, plastic waste, rubber waste, and quarry waste as partial replacements for conventional concrete constituents. The review evaluates their influence on the fresh properties, mechanical performance, durability, environmental impact, and overall sustainability of concrete. The available literature indicates that recycled materials can reduce the consumption of natural aggregates and Portland cement, minimize waste disposal, conserve natural resources, and potentially reduce embodied carbon and energy consumption. However, their incorporation may also introduce challenges, including reduced workability, increased water absorption, weaker interfacial bonding, lower strength and stiffness at high replacement levels, delayed strength development, alkali–silica reaction, and considerable variability in material quality. The review further highlights that the environmental advantages of recycled concrete cannot be assessed solely on the basis of replacement percentages; transportation, processing energy, material quality, durability, service life, and end-of-life recycling must also be considered through life-cycle assessment. Significant research gaps remain in the combined use of multiple waste materials, long-term durability, full-scale structural validation, standardized characterization, and integrated performance–environmental assessment. Future research should focus on multi-waste concrete, life-cycle-based optimization, artificial intelligence-assisted mix design, and multi-objective assessment integrating strength, durability, cost, embodied carbon, and resource efficiency. Such developments can support the transition toward low-carbon, durable, resource-efficient, and circular concrete for sustainable construction.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.70102/ijares/v6s1/6-s1-1953first seen 2026-09-10 05:18:14 · last seen 2026-09-21 05:14:00
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