ブルキナファソにおける建設資材の排出原単位：現地の前提に基づくゆりかごから門までのライフサイクルアセスメント
Emission Factors of Construction Materials in Burkina Faso: A Cradle-to-Gate Life Cycle Assessment Approach Based on Local Assumptions (原題)
Ziwindyinga Rebéca Belemsigri, Abdoul Nassourou Cisse, Kokou Prosper Semekonawo, Alou Tamboura, Daouda Konane, Bruno Korgo
🤖 gxceed AI 要約
日本語
本研究は、ブルキナファソの建設資材（セメント、鋼材、アルミ等）について、現地の技術・エネルギー・物流条件に基づく簡易LCAを用いて排出原単位を推定した。アルミが最も高く、砂が最も低い。輸入依存や輸送、電力構成が炭素強度に影響する。現地に即した炭素会計と環境データベース構築に貢献する。
English
This study estimates emission factors for key construction materials in Burkina Faso using a simplified cradle-to-gate LCA adapted to local conditions. Aluminium has the highest factor (12.804 tCO2/t), sand the lowest (0.0013 tCO2/t). Differences are driven by import dependence, transport, and electricity mix. Supports context-specific carbon accounting and environmental databases for West Africa.
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
日本では建設分野の脱炭素が進むが、アフリカ等の途上国向け排出原単位の不足はグローバルサプライチェーンでのScope3算定に影響する。日本企業が海外建設プロジェクトや資材調達を行う際の参考となる。
In the global GX context
This paper addresses the lack of local emission factors in developing countries, which is critical for accurate carbon accounting in global supply chains. It provides a methodology that can be adapted to other regions, supporting ISSB-aligned disclosure and Scope 3 reporting for multinational companies.
👥 読者別の含意
🔬研究者:Provides a case study of LCA adaptation to data-scarce contexts, useful for developing regional emission factors.
🏢実務担当者:Offers emission factors for construction materials in Burkina Faso, aiding carbon footprinting of projects in West Africa.
🏛政策担当者:Highlights the need for local environmental databases to support climate action in the building sector.
📄 Abstract（原文）
The building and public works sector is a major source of greenhouse gas emissions in developing countries due to the high material intensity of infrastructure and the dependence on imported materials. In Burkina Faso, as in most African countries, environmental assessments remain limited by the lack of locally representative emission factors, creating uncertainty in carbon accounting. This study estimates emission factors for key construction materials in Burkina Faso using a simplified cradle-to-gate Life Cycle Assessment (LCA) adapted to national technical, energy, and logistical conditions. The materials analyzed include cement, steel, flat glass, aluminium, aggregates, sand, timber, ceramic tiles, paint, bitumen, and asphalt mixes. The results reveal significant variations in the carbon intensity of construction materials in the Burkina Faso context. Aluminium exhibits the highest emission factor (12.804 tCO2/t), followed by paint (2.50 tCO2/t), steel (1.970 tCO2/t), Portland cement (1.060 tCO2/t), ceramic tiles (0.99 tCO2/t), flat glass (0.84 tCO2/t), bitumen (0.628 tCO2/t), asphalt mixes (0.130 tCO2/t), timber (0.16 tCO2/t), aggregates (0.008 tCO2/t), and sand (0.0013 tCO2/t). Portland cement exhibits a slightly higher emission factor than the values commonly reported in the literature (0.85–0.95 tCO2/t), while steel, aluminium, flat glass, ceramic tiles, bitumen, asphalt mixes, timber, and paint remain within internationally reported ranges. In contrast, sand exhibits a slightly lower emission factor than typical literature values, reflecting its limited processing requirements. Aggregates and sand show the lowest emission factors due to minimal industrial processing and greater local availability. These differences are mainly driven by import dependence, long- distance maritime and road transportation, the characteristics of the national electricity mix, and local production conditions. The study supports the development of context-specific carbon assessments and environmental databases for Burkina Faso and other West African countries.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/su18178825first seen 2026-09-08 05:22:03 · last seen 2026-09-22 05:11:43
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