Environmental and Mechanical Trade-Off Optimization of Waste-Derived Concrete Using Surrogate Modeling and Pareto Analysis
サロゲートモデリングとパレート分析を用いた廃棄物由来コンクリートの環境・力学トレードオフ最適化 (AI 翻訳)
R. Haigh
🤖 gxceed AI 要約
日本語
本研究は、都市固形廃棄物（MSW）由来の3種類の材料（段ボール繊維、再生HDPE、繊維廃棄物）をコンクリートに10%セメント代替で組み込み、機械的性能と環境影響を評価した。LCAとNSGA-IIによる最適化の結果、段ボール繊維はGWPを19%削減し、繊維廃棄物はバランスの良い性能を示した。HDPEは機械的性能は良好だが環境負荷が増大した。統合フレームワークは低炭素・循環型建設材料の意思決定を支援する。
English
This study evaluates three municipal solid waste materials (cardboard fibers, recycled HDPE, and textile fibers) in concrete with 10% cement replacement, assessing mechanical strength and conducting life cycle assessment. Surrogate-based optimization using NSGA-II reveals that cardboard fibers achieve 19% GWP reduction, textile fibers offer balanced performance with 10% reduction, while HDPE increases environmental burden. The integrated framework supports decision-making for low-carbon, circular construction materials.
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、コンクリートの脱炭素化が急務であり、本論文の廃棄物由来材料の採用は循環型社会形成に貢献する。LCAと多目的最適化の組み合わせは、日本企業がSSBJ対応や環境報告に活用できる実践的手法を提供する。
In the global GX context
Globally, concrete contributes 4-8% of CO2 emissions, making embodied carbon reduction critical for ISSB and CSRD compliance. This paper's integration of LCA with surrogate optimization offers a replicable methodology for evaluating low-carbon circular materials, supporting green building certifications and Scope 3 emissions reductions.
👥 読者別の含意
🔬研究者:Provides a validated surrogate optimization framework for multi-objective trade-off analysis in low-carbon concrete design.
🏢実務担当者:Demonstrates quantitative environmental and cost impacts of using waste fibers in concrete, useful for material procurement and product development.
🏛政策担当者:Supports evidence-based building codes and procurement policies favoring circular materials with quantified emission reductions.
📄 Abstract（原文）
Concrete production contributes approximately 4–8% of global cardon dioxide emissions, largely due to Portland cement. Incorporating municipal solid waste (MSW) into concrete offers a pathway to reduce cement demand while supporting circular economy objectives. This study evaluates the mechanical performance, environmental impacts, and optimization potential of concrete incorporating three MSW-derived materials: cardboard kraft fibers (KFs), recycled high-density polyethylene (HDPE), and textile fibers. A maximum 10% cement replacement strategy was adopted. Compressive strength was assessed at 7, 14, and 28 days, and a cradle-to-gate life cycle assessment (LCA) was conducted using OpenLCA to quantify global warming potential (GWP100) and other midpoint impacts. A surrogate-based optimization implemented using Non-dominated Sorting Genetic Algorithm II (NSGA-II) was applied to minimize cost and GWP while enforcing compressive strength as a feasibility constraint. The results show that fiber-based wastes significantly reduce embodied carbon, with KF achieving the largest GWP reduction (19%) and textile waste achieving moderate reductions (10%) relative to the control. HDPE-modified concrete exhibited near-control mechanical performance but increased GWP and fossil depletion due to polymer processing burdens. The optimization results revealed well-defined Pareto trade-offs for KF and textile concretes, identifying clear compromise solutions between cost and emissions, while HDPE was consistently dominated. Overall, textile waste emerged as the most balanced option, offering favorable environmental gains with minimal cost and acceptable mechanical performance. The integrated LCA optimization framework demonstrates a robust approach for evaluating MSW-derived concrete and supports evidence-based decision-making toward low-carbon, circular construction materials.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/su18021119first seen 2026-06-29 07:32:01
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