風力産業廃棄物を用いた低炭素アスファルト混合物：ライフサイクルアセスメント
Low-Carbon Asphalt Mixtures Using Wind-Industry Waste: A Life Cycle Assessment (原題)
Lucía Cases Valbuena, Marina Díaz-Piloñeta, Marta Terrados-Cristos, José Valeriano Álvarez-Cabal, Gemma Martínez Huerta
🤖 gxceed AI 要約
日本語
風力タワー製造で生じる溶接スラグと塗料汚泥をアスファルト混合物に活用し、プラント出荷段階までのLCAを実施した。参照混合物のGWPは95.20 kg CO2eq/tで、溶接スラグで9.67%、塗料汚泥で28.28%、併用で37.95%削減された。塗料汚泥はバージン瀝青の削減と焼却回避を通じて特に有効だが、ヒト健康など一部の影響カテゴリでは順位が変わる。
English
A cradle-to-gate LCA assessed asphalt mixtures incorporating welding slag and paint sludge from wind-tower manufacturing. Against a reference GWP of 95.20 kg CO2 eq/t, welding slag cut GWP by 9.67%, paint sludge by 28.28%, and the combined formulation by 37.95%. Paint sludge was most beneficial by reducing virgin bitumen and avoiding incineration, though endpoint rankings varied across damage categories.
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
日本では建設資材の脱炭素化とサーキュラーエコノミーがGX政策の柱となりつつあり、再生材利用のLCA評価は公共調達や建設業のScope 3削減目標の根拠として活用できる。風力産業廃棄物の再資源化は国内の洋上風力拡大に伴う廃棄物処理課題にも示唆を与える。
In the global GX context
As global disclosure frameworks (ISSB, CSRD) push companies to account for upstream and end-of-life emissions, this study offers quantified evidence that industrial-waste valorization in construction materials can materially lower product carbon footprints. It supports circular-economy claims in transition finance and green procurement, though the sensitivity to avoided-treatment crediting highlights the need for transparent LCA methodology in disclosure.
👥 読者別の含意
🔬研究者:建設資材のLCAにおける廃棄物活用の効果と、回避処理クレジットの感度分析手法を参考にできる。
🏢実務担当者:建設・製造業の調達担当は、風力産業廃棄物を混入した低炭素アスファルトの採用によりScope 3削減と廃棄物処理コスト削減を両立しうる。
🏛政策担当者:公共インフラ調達で再生材利用を促進する際、LCAに基づく削減効果の認定と回避処理クレジットの扱いを明確化する必要がある。
📄 Abstract（原文）
Industrial waste valorization in asphalt mixtures can reduce natural resource use and climate impacts, although benefits depend on the substituted material, conditioning needs, and avoided waste management route. This study evaluates the cradle-to-gate environmental performance of asphalt mixtures incorporating welding slag and paint sludge from wind-tower manufacturing. A comparative LCA was conducted for 1 t of asphalt mixture produced at the plant. Four scenarios were assessed: a conventional reference mixture, full replacement of limestone filler by welding slag, incorporation of conditioned paint sludge with reduced virgin bitumen content, and a combined formulation. The model was implemented in SimaPro using ecoinvent v3.8 under the cut-off system model, applying IPCC 2021 GWP 100a and ReCiPe 2016 midpoint and endpoint methods. The reference mixture presented a global warming potential of 95.20 kg CO2 eq/t. Under the baseline avoided treatment crediting approach, welding slag reduced GWP by 9.67%, paint sludge by 28.28%, and the combined scenario by 37.95%. Endpoint results generally indicated lower impacts for the modified scenarios, although rankings differed among damage categories, particularly for human health due to the avoided landfill credit. Overall, these valorization routes showed environmental benefits, especially when hazardous paint sludge reduced virgin bitumen use and avoided conventional incineration.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/cleantechnol8050164first seen 2026-10-09 04:46:55
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