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ジュート繊維と石灰石煆焼粘土セメント(LC3)で強化したサステナブル版築ブロックの性能最適化

PERFORMANCE OPTIMIZATION OF SUSTAINABLE RAMMED EARTH BLOCKS REINFORCED WITH JUTE AND LIMESTONE CALCINED CLAY CEMENT (LC3) (原題)

Randeep, Sanjay Srivastava, V. Soamidas

Jurnal Teknologi📚 査読済 / ジャーナル2026-08-29#省エネ対象セクター: construction
DOI: 10.11113/jurnalteknologi.v88.25046
原典: https://doi.org/10.11113/jurnalteknologi.v88.25046
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🤖 gxceed AI 要約

日本語

本研究は、天然ジュート繊維とLC3セメントで強化した版築ブロックの性能を評価。1%のジュート繊維が強度と靭性の最適バランスを示し、LC3が耐久性を向上。圧縮強度4.32MPa、曲げ強度1.17MPa、吸水率13.18%を達成し、低炭素で経済的な建設材料の可能性を示した。

English

This study evaluates rammed earth blocks reinforced with jute fiber and LC3 cement. 1% jute fiber provides optimal strength and ductility, while LC3 enhances durability. The composite achieves compressive strength of 4.32 MPa, flexural strength of 1.17 MPa, and water absorption of 13.18%, highlighting potential for low-carbon, cost-effective construction.

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

日本の建設分野では、カーボンニュートラル達成に向けて建材の低炭素化が急務。本研究成果は、伝統的な版築技術を現代の性能基準に適合させる可能性を示し、日本の住宅・建築分野での応用が期待される。ただし、日本の建築基準法や気候条件への適合性は今後の検討課題。

In the global GX context

Globally, the construction sector accounts for ~40% of CO2 emissions, driving interest in low-carbon materials. This study contributes to sustainable construction literature by demonstrating a viable alternative to conventional cement-based blocks, aligning with global efforts to reduce embodied carbon in buildings.

👥 読者別の含意

🔬研究者:Provides empirical data on jute-LC3 reinforced rammed earth, useful for further material optimization studies.

🏢実務担当者:Offers a potential low-carbon building material alternative for sustainable construction projects.

🏛政策担当者:Informs policy on promoting low-carbon construction materials and sustainable building practices.

📄 Abstract（原文）

Rammed earth blocks (REBs) are attracting renewed attention as sustainable building materials due to their low embodied energy and use of locally sourced soil, yet their limited tensile strength and moisture sensitivity restrict wider structural applications. This study investigates a dual enhancement approach, combining natural jute fiber reinforcement (0.25–1.25% by weight) with 10% Limestone Calcined Clay Cement (LC3) stabilization. To evaluate performance, mechanical tests—including compaction, compressive strength (dry and wet), flexural strength, ultrasonic pulse velocity (UPV), and water absorption—were performed. Microstructural evolution was examined through binocular microscopy, FESEM-EDS, XRD, and TGA analyses. Results indicated that 1% jute fiber provided the best balance of strength and ductility, while LC3 contributed to matrix densification and improved durability. The combined system achieved a compressive strength of 4.32 MPa, a flexural strength of 1.17 MPa, and reduced water absorption to 13.18%. Microstructural observations confirmed the formation of pozzolanic products and a refined pore network, highlighting the potential of this composite for durable, low-carbon, and cost-effective construction.

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