Comprehensive evaluation of the environmental performance and durability of biochar-incorporated concrete
バイオチャー混入コンクリートの環境性能と耐久性の包括的評価 (AI 翻訳)
Seung-Beom Kang, Jin-Seok Woo, Minkyeong Pyo, Hyun-Do Yun, Wonchang Choi
🤖 gxceed AI 要約
日本語
木材由来のバイオチャーを代替セメント材料としてコンクリートに混入した場合の機械的特性、凍結融解耐久性、LCAによる地球温暖化係数を包括的に評価。5%混入で目標強度を達成し、耐久性も向上。3-5%が最適と結論。
English
This study comprehensively evaluates wood-based biochar as an alternative supplementary cementitious material in concrete, assessing mechanical properties, freeze-thaw durability, and life cycle assessment. Results show 5% biochar achieves target strength, improves durability, and reduces global warming potential by up to 27.7%, with 3-5% replacement identified as optimal.
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
日本の建設業界では、カーボンニュートラル達成に向けてコンクリートの低炭素化が急務。本研究成果は、国内のバイオマス資源活用による低炭素建築材料の実用化に示唆を与える。
In the global GX context
As global efforts to decarbonize the construction industry intensify, this study provides empirical evidence on biochar-incorporated concrete as a low-carbon alternative, particularly relevant for regions with wood biomass availability.
👥 読者別の含意
🔬研究者:Provides experimental data on biochar concrete performance and LCA, useful for material science and sustainable construction research.
🏢実務担当者:Can inform construction material selection for low-carbon concrete projects, especially where biochar is available.
🏛政策担当者:Supports development of standards for biochar use in concrete to reduce carbon footprint.
📄 Abstract（原文）
To achieve global carbon neutrality, the construction industry is increasingly focused on reducing the carbon footprint of cement-based materials. However, comprehensive evaluations of biochar-incorporated concrete integrating long-term mechanical performance, freeze–thaw durability, and environmental impact remain limited. To address these issues, this study presents a comprehensive experimental evaluation of wood-based biochar as an alternative supplementary cementitious material (ASCM) in concrete. The physical characteristics of the biochar were analyzed using scanning electron microscopy (SEM), SEM–EDX, and Brunauer–Emmett–Teller (BET) analyses, and the chemical characteristics were evaluated using XPS. Concrete performance was evaluated in terms of mechanical properties (compressive strength, flexural strength, and static modulus), freeze–thaw durability with quantitative image-based surface analysis, and a life cycle assessment (LCA) was performed to quantify global warming potential (GWP). The results indicate that concrete containing 5% biochar achieved the target design strength of 24 MPa, whereas 7% replacement resulted in a compressive strength reduction of up to 35.5% compared to the plain mix. After 300 freeze–thaw cycles, the 5% biochar mixture maintained a durability factor of 96.8% and reduced the increase in surface scaling and increase in void count by approximately 74 and 72%, respectively, compared with the plain specimen. LCA results revealed that increasing the biochar replacement ratio reduced GWP, with up to a 27.7% reduction at 7% replacement. Considering both mechanical performance and environmental impact, a biochar replacement range of 3–5% was identified as optimal. These findings demonstrate that wood-based biochar is a viable ASCM for sustainable and low-carbon concrete construction.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1038/s41598-026-45887-2first seen 2026-06-29 07:15:26
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