インドの持続可能なリーン住宅に向けたMivan、EPSパネル、フライアッシュジオポリマーシステムの多基準比較
Multi-Criteria Comparison of Mivan, EPS Panel and Fly Ash Geopolymer Systems for Sustainable Lean Housing in India (原題)
S. Wadalkar, Venushree S. Khanke, Sarang Joshi, M. Shende, Archana Mahajan, Choon Kit Chan, Subhav Singh, D. Varshney, Vijay Chaudhary
🤖 gxceed AI 要約
日本語
インド・プネーのG+3集合住宅を対象に、Mivanアルミ型枠、EPSコアパネル、フライアッシュジオポリマー積みブロックを従来のRCC・粘土れんがと比較した準実験研究。Mivanは工期短縮54.2%と廃棄物最小、EPSは壁U値0.31 W/m2Kと30年LCCが従来比18.5%減で最良、ジオポリマーは建設段階のembodied carbonを65.8%削減し圧縮強度31.2 MPaと最高。多基準評価ではEPSが最高（3.85）となり、ライフサイクル視点がコスト順位を逆転させることを示す。
English
Quasi-experimental comparison of Mivan aluminium formwork, EPS core panels, and fly ash geopolymer block masonry against conventional RCC-clay brick for a G+3 residential building in Pune, India. Mivan gave the largest schedule savings (54.2%) and lowest waste intensity; EPS panels had the best wall U-value (0.31 W/m2K) and lowest 30-year life-cycle cost (18.5% below conventional); geopolymer blocks cut construction-phase embodied carbon by 65.8% and reached 31.2 MPa. Weighted multi-criteria analysis ranked EPS highest, showing life-cycle costing reverses single-phase cost rankings.
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
日本の住宅・建設GXでは省エネ基準適合やLCC・embodied carbonの可視化が進むが、本論文の資材別ライフサイクル比較はZEH・LCCMや非住宅の脱炭素設計、Scope 3上流の建設資材評価に示唆を与える。
In the global GX context
Adds empirical evidence to the global push for embodied-carbon accounting in buildings (ISO 14044, CSRD/ISSB Scope 3 upstream, green building certification), showing that life-cycle cost and carbon metrics can reverse conventional material selection rankings.
👥 読者別の含意
🔬研究者:資材選択におけるLCCとembodied carbonの統合評価手法の実証例として参照できる。
🏢実務担当者:住宅デベロッパー・施工者はEPSやMivan採用時の工期・コスト・炭素のトレードオフ判断に活用できる。
🏛政策担当者:低炭素建材の普及促進やグリーン住宅政策の設計に資する比較エビデンスを提供する。
📄 Abstract（原文）
The construction industry generates about 36% of global energy consumption and 40% of CO₂ emissions, while material waste exceeding 30%, schedule overruns and cost escalation underscore the relevance of lean construction principles. This study compares Mivan aluminium formwork, Expanded Polystyrene (EPS) core panel systems and fly ash geopolymer block masonry against conventional reinforced cement concrete (RCC)-clay brick masonry for a G+3 residential building in Pimpri-Chinchwad, Pune, India, using a controlled quasi-experimental design comprising material characterisation, direct and life-cycle cost analysis, thermal performance assessment (U-value, time lag, decrement factor), embodied-carbon quantification (ISO 14044:2006) and lean waste metrics via the Last Planner System (LPS). Mivan achieved the highest schedule savings (54.2%) and lowest material waste intensity (11.2 kg/m2 GFA); EPS panels achieved the best wall U-value (0.31 W/m2K) and lowest 30-year life-cycle cost (INR 148.60 lakhs, 18.5% below conventional); fly ash geopolymer blocks achieved the lowest construction-phase embodied carbon (38.6 kg CO₂-eq/m2, 65.8% below clay brick) and the highest compressive strength (31.2 MPa). Weighted multi-criteria analysis ranked EPS panels highest (3.85), followed by Mivan (3.65), fly ash geopolymer (3.50) and conventional (1.95), showing that single-phase cost analysis alone is insufficient for technology selection since a life-cycle perspective incorporating operational energy and embodied carbon systematically reverses cost rankings. These findings provide evidence-based guidance for developers, contractors and policymakers pursuing sustainable mass housing in India.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://journals.bilpubgroup.com/index.php/jbms/article/download/117098first seen 2026-11-06 05:39:34
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