Circular Valorization of Post-Industrial Textile Waste in Thermal-Insulating Cementitious Ceiling Sheets
断熱性セメント系天井板における産業後繊維廃棄物の循環的有価化 (AI 翻訳)
Kavini Vindya Fernando, Charith Akalanka Dodangodage, Vinalee Maleeshi Seneviratne, Sanduni Jayasinghe, Dhammika Dharmaratne, Geethaka Nethsara Gamage, Ranoda Hasandee Halwatura, U. Gunasekera, R.U. Halwatura
🤖 gxceed AI 要約
日本語
本研究は、産業後の繊維廃棄物（綿、綿ポリエステル混紡）を未加工でセメント系天井板に直接混入する手法を評価した。最適なCP15配合（15重量%綿ポリエステル）は、熱伝導率0.091 W/m·K（市販比50%減）を達成し、ISO規格を満たす機械強度を示した。また、ポリエステル骨格による寸法安定性により、湿潤環境下でも膨潤が1.35%に抑制された。このスケーラブルな直接資源化戦略は、熱帯気候向けの断熱建材として有効である。
English
This study evaluates direct incorporation of post-industrial textile waste (cotton, cotton-polyester blends) into cementitious ceiling sheets. The optimized CP15 formulation (15 wt% cotton-polyester) achieved thermal conductivity of 0.091 W/m·K (50% lower than commercial) and met ISO strength standards, with thickness swelling limited to 1.35% due to hydrophobic polyester framework. The scalable direct-valorization strategy is effective for thermal-insulating building materials in tropical climates.
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GX政策では、建設分野の省エネ・断熱性能向上と廃棄物の循環利用が重視されている。本手法は、産業廃棄物の直接建材化により、企業のScope 3排出削減とグリーン建材認証取得に貢献できる可能性がある。また、日本は繊維廃棄物の処理問題を抱えており、本研究成果は国内の循環型社会構築に示唆を与える。
In the global GX context
Global GX context: As ISSB and CSRD emphasize value chain emissions, direct waste valorization in construction materials can reduce Scope 3 impacts. This paper offers a scalable approach to producing high-insulation ceiling boards from textile waste, supporting energy efficiency goals and circular economy targets under frameworks like the EU Taxonomy.
👥 読者別の含意
🔬研究者:Provides a reproducible method for incorporating textile waste into cementitious composites with enhanced thermal and mechanical properties, opening avenues for further optimization of waste streams.
🏢実務担当者:The CP15 formulation meets ISO 8336 standards and can be directly adopted by ceiling board manufacturers to produce low-embodied-energy products without major process changes.
🏛政策担当者:Demonstrates a direct valorization pathway for textile waste that could be incentivized through green building codes or waste diversion subsidies.
📄 Abstract（原文）
The construction sector faces increasing pressure to reduce the embodied energy of building materials while valorizing industrial waste streams. This study evaluates the direct incorporation of post-industrial textile waste (100% cotton and cotton–polyester blends) in its native form to develop high-performance cementitious ceiling sheets. Composites were fabricated under a controlled hydraulic compaction pressure of 2.0 MPa, optimized to achieve matrix densification while preserving the integrity of the fibrous network. Viscoelastic recovery of the compressed fibers induced a hierarchical double-porosity architecture characterized by macro-voids and hollow fiber lumens. This microstructural evolution reduced thermal conductivity to 0.091 W/m·K, approximately 50% lower than commercial cement–fiber benchmarks—without compromising mechanical compliance. Scanning Electron Microscopy (SEM) revealed a mechanistic decoupling between water absorption and dimensional stability. Although the CP15 formulation (15 wt.% cotton–polyester) exhibited high moisture uptake (~21%), thickness swelling remained limited to 1.35%. This dimensional stability is attributed to the hydrophobic polyester framework, which bridges microcracks and constrains hygroscopic expansion within the cellulosic phase. The optimized CP15 composite achieved a Modulus of Rupture (MOR) of 8.75 MPa, exceeding ISO 8336 Category C, Class 2 requirements. Despite increased thickness, the areal density (10.84 kg/m2) remains compatible with standard gypsum-grade suspension systems, eliminating the need for structural modification. These findings establish a scalable, direct-valorization strategy for circular construction materials delivering enhanced thermal insulation and robust performance under tropical climatic conditions.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/textiles6010027first seen 2026-06-29 07:23:29
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