Life cycle assessment of high-volume waste glass powder in mortar: identifying the optimal balance for sustainable construction materials

モルタルにおける高含有量廃ガラス粉末のライフサイクルアセスメント：持続可能な建設材料のための最適バランスの特定 (AI 翻訳)

Xiwen Zhang, Fengming Ren, Qing Wang

International Conference on Water Conservancy, Hydropower and Building Engineering学会2026-04-13#炭素会計Origin: CN経営インパクト: コスト削減対象セクター: construction

DOI: 10.1117/12.3110528

原典: https://doi.org/10.1117/12.3110528

🤖 gxceed AI 要約

日本語

本研究は、モルタルにおいて高含有量の廃ガラス粉末（WGP）をセメント代替として用いたライフサイクルアセスメント（LCA）を実施。強度正規化環境指標（SEI）を導入し、50%置換が最適な環境効率を示すことを発見。70%置換では強度低下により効率が低下するため、粒子径最適化が重要。

English

This study conducts a cradle-to-gate LCA of mortar with high-volume waste glass powder (WGP) as cement substitute. It introduces a strength-normalized environmental indicator (SEI) and finds that 50% replacement achieves optimal environmental efficiency, while higher replacements reduce efficiency due to strength loss. Particle size optimization is crucial.

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

日本ではセメント産業の脱炭素化が急務であり、廃ガラス粉の有効活用は建設分野のGXに貢献。本研究成果は、強度と環境負荷のトレードオフを定量的に示し、日本の建築材料選定や廃棄物政策に示唆を与える。

In the global GX context

Globally, cement production accounts for ~8% of CO2 emissions. This LCA provides a method to optimize alternative materials, offering a pathway for low-carbon construction. The strength-normalized indicator can be applied to other substitute materials, relevant for ISSB/TCFD-aligned disclosure on material efficiency.

👥 読者別の含意

🔬研究者:Provides a novel LCA framework with strength-normalized indicator for evaluating cement substitutes.

🏢実務担当者:Demonstrates that 50% waste glass powder with particle optimization can reduce environmental impact without significant strength loss.

🏛政策担当者:Supports waste management policies and building codes that incentivize use of recycled materials in construction.

📄 Abstract（原文）

The cement industry is a major contributor to global carbon emissions. This study explores the utilization of high -volume Waste Glass Powder (WGP) as a cement substitute in mortar to mitigate its environmental footprint. A cradle-to-gate life cycle assessment (LCA) was conducted, evaluating mortars with high-volume WGP replacement levels (50%–70%). Beyond the conventional volume-based functional unit (1 m3), this research introduces a strength-normalized environmental indicator (SEI, CNY/MPa) to assess environmental efficiency. Results demonstrate that increasing WGP content significantly reduces the comprehensive environmental impact (CEI) per cubic meter. However, the SEI analysis reveals a critical trade-off: A 50% replacement with optimized redistribution WGP (RWGP) achieves the optimal environmental efficiency, reducing SEI by 30.77% compared to the reference, while higher replacements (70%) or the use of traditional WGP (TWGP) diminish efficiency due to strength loss. The study concludes that a 50% incorporation of RWGP represents the optimal balance, offering a promising pathway for developing low-carbon building materials in construction materials, with the crucial prerequisite of particle size optimization.

🔗 Provenance — このレコードを発見したソース

semanticscholar https://doi.org/10.1117/12.3110528first seen 2026-07-19 05:47:29

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