Life Cycle Impact Assessment for Steel Slag Aggregates Production in Abu Dhabi, United Arab Emirates
アラブ首長国連邦アブダビにおける鉄鋼スラグ骨材生産のライフサイクル影響評価 (AI 翻訳)
Mohammed H. Alzard, Omar F. Najm, Ahmed N. A. Hamdan, M. Šinka
🤖 gxceed AI 要約
日本語
アブダビ2施設の鉄鋼スラグ骨材の温室効果ガス排出量をゆりかごからゲートまで定量化。500,000トンで平均強度6.54 kg CO2eq/トン、天然骨材比16%低い。輸送工程が主要排出源。第三者検証済みEPD開発を推奨。
English
This study quantifies the cradle-to-gate GHG footprint of steel slag aggregates (SSA) from two Abu Dhabi facilities. Average intensity 6.54 kg CO2eq/tonne, 16% lower than natural aggregates. Inbound transport dominates emissions. Recommends third-party verified Environmental Product Declarations.
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
UAE事例だが、日本でも鉄鋼スラグリサイクルが進み、建設資材のカーボンフットプリント評価は建設業脱炭素化に貢献。輸送工程の排出が主要な点は日本にも共通課題として参考になる。
In the global GX context
This UAE case study adds facility-specific LCA data for steel slag aggregates, relevant for global construction decarbonization. The finding that transport dominates emissions is a key insight for any country promoting waste valorization.
👥 読者別の含意
🔬研究者:Provides emission factors for steel slag aggregates in the Middle East, filling data gaps in the region.
🏢実務担当者:Construction firms can use the reported 6.54 kg CO2eq/tonne intensity for sourcing low-carbon aggregates, considering geographic context.
🏛政策担当者:Supports policies for steel slag valorization as a lower-carbon alternative to natural aggregates.
📄 Abstract（原文）
Steel slag aggregates (SSA) offer a potential route for reducing reliance on natural aggregates (NA) and diverting steelmaking by-products from landfill. However, facility-specific life cycle data for SSA production in Abu Dhabi, United Arab Emirates, remain limited. This study quantifies the cradle-to-gate greenhouse gas footprint of SSA produced at two recycling facilities in Abu Dhabi. The assessment follows ISO 14040/14044 and uses a functional unit of 1 tonne of SSA. Primary 2024 operational data were combined with emission factors from the UK Government 2024 dataset, Intergovernmental Panel on Climate Change default values, and published literature. The combined emissions for 500,000 tonnes of SSA were 3,270.22 t CO2eq, corresponding to an average intensity of 6.54 kg CO2eq/tonne SSA. Al Fayah emitted 2,007.88 t CO2eq for 250,000 tonnes of output, equivalent to 8.03 kg CO2eq/tonne SSA, while KEZAD B emitted 1,262.33 t CO2eq for 250,000 tonnes of output, equivalent to 5.05 kg CO2eq/tonne SSA. Inbound material transportation dominated the footprint at both plants, particularly last-mile road transport. Compared with the NA benchmark of 7.75 kg CO2eq/tonne, the average SSA intensity was approximately 16% lower. Under the stated boundary and assumptions, SSA showed lower cradle-to-gate emissions than NA. The way forward should prioritize primary metering, carrier data, and the development of a third-party-verified Environmental Product Declaration to strengthen comparability and market uptake.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://press.ierek.com/index.php/ESSD/article/download/1304/1437first seen 2026-07-15 05:54:11
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。