持続可能な建設用途向けジュート繊維強化ゼロカーボン複合ブロックの作製と特性評価
Fabrication and Characterization of Jute Fiber-reinforced Zero-carbon Composite Blocks for Sustainable Construction Applications (原題)
R. Samadder, Hrithita Aftab, M. A. Khan
🤖 gxceed AI 要約
日本語
本研究は、ジュート繊維、石灰、持続可能な架橋剤を用いてセメントフリーの複合ブロックを開発し、機械的特性、熱・音響特性、耐水性、生分解性を評価した。LCAの結果、二酸化炭素排出量は-0.18 kg CO2/ft2となり、炭素ネガティブな建材であることを示した。非耐力壁や軽交通床材への適用が期待される。
English
This study develops cement-free composite blocks using jute fibers, lime, and a sustainable cross-linker, evaluating mechanical, thermal, acoustic, and biodegradation properties. LCA shows a carbon-negative footprint of -0.18 kg CO2/ft2, indicating potential for non-load-bearing walls and light-traffic flooring.
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、脱炭素化と循環経済への移行が急務であり、SSBJ開示やサプライチェーン排出量算定において建材の環境負荷低減が重要視されている。本研究成果は、炭素ネガティブな建材の実証例として、日本の建材メーカーや建設会社が低炭素建材の採用を検討する際の参考となる。
In the global GX context
Globally, the construction sector faces pressure to reduce embodied carbon, with frameworks like the EU Taxonomy and ISSB standards driving demand for low-carbon materials. This study provides empirical evidence of a carbon-negative building material, contributing to the growing body of literature on sustainable construction and offering a potential alternative to conventional materials.
👥 読者別の含意
🔬研究者:Provides empirical data on a novel carbon-negative composite material, useful for further research in sustainable construction materials.
🏢実務担当者:Offers a viable alternative for non-load-bearing applications, potentially aiding in meeting sustainability targets and reducing carbon footprint.
🏛政策担当者:Highlights the potential of bio-based materials in achieving carbon reduction goals in the construction sector, informing policy on sustainable building standards.
📄 Abstract（原文）
The construction industry is one of the major contributors to global CO2 emissions for conventional construction materials. Considering the increasing risks posed by climate change, the demand for climate-resilient housing has been on the rise. This has led to an investigation of low-carbon, renewable, sustainable building materials. This study seeks to explore jute fiber-reinforced composite blocks as a cement-free, climate-resilient construction material. Jute composite blocks have been fabricated by utilizing jute fibers, lime, and a sustainable cross-linker. The process was conducted at room temperature. Mechanical properties were evaluated following ASTM standards, and FTIR analysis was conducted to study matrix-fiber interactions. A Life Cycle Analysis (LCA) was performed to evaluate the net CO2 emissions. The developed blocks exhibited a compressive strength of approximately 14 MPa, tensile strength of 50 MPa, and flexural strength of 45 MPa, making them suitable for non-load-bearing walls and light-traffic flooring. Their porous fibrous structure resulted in low thermal conductivity (0.04 W•m⁻¹•K⁻¹) and effective sound absorption. The Blocks showed compressive strength of 14±1.1 MPa, tensile strength of 50±3.2 MPa, and flexural strength of 45±2.8 MPa, suitable for use in non-load-bearing applications. The porous structure exhibited a low thermal conductivity of 0.04±0.003 W/m.K and effective sound absorption(reductions of 4.2-13.1 dB). Water absorption remained below 7%, and soil burial tests showed a weight loss of less than 6%, indicating good resistance to biological degradation. The LCA yielded -0.18 kg CO2/ft2, signifying a carbon-negative product. The jute-fiber blocks have satisfactory mechanical properties, good thermal and acoustic insulation, significant reduction in environmental impact. The composition is cement-free and exhibits carbon-negative performance, supporting sustainable building applications. Jute fiber-reinforced composite blocks provide an eco-friendly alternative to conventional non-load-bearing construction materials, contributing to the development of low-carbon, energy-efficient, and climate-resilient housing systems.
🔗 Provenance — このレコードを発見したソース
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