熱抵抗性と断熱性を高めた低炭素発泡粘土モルタル
Low-carbon expanded clay mortars for enhanced thermal and heat resistance (原題)
Mohamed Sadak Merrakchi, Smain Benyamina, Yacine Abadou, Othmane Boukendakdji
🤖 gxceed AI 要約
日本語
本研究は、セメントを発泡粘土で部分的に置換（0〜30%）したモルタルの機械的特性、熱特性、高温耐性を評価。発泡粘土の添加により断熱性が13.47%向上し、CO2排出量を15〜30%削減。高温800℃でも強度保持率が向上し、低炭素で耐熱性のある建材としての可能性を示した。
English
This study evaluates mortars with partial cement replacement by expanded clay (0-30%), assessing mechanical, thermal, and high-temperature properties. Expanded clay improved thermal insulation by 13.47% and reduced CO2 emissions by 15-30%, while enhancing strength retention at 800°C. It demonstrates potential for low-carbon, heat-resistant building materials.
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CO2削減が急務。本研究成果は、セメント代替による排出削減と断熱性能向上を両立する手法を示し、建築物の省エネ基準やゼロエネ住宅への応用が期待される。
In the global GX context
Globally, the construction sector faces pressure to decarbonize. This study offers empirical evidence on using expanded clay as a supplementary cementitious material, contributing to low-carbon building materials and aligning with international efforts to reduce embodied carbon in construction.
👥 読者別の含意
🔬研究者:Provides experimental data on expanded clay mortars' thermal and mechanical trade-offs, useful for sustainable construction materials research.
🏢実務担当者:Offers insights for construction firms seeking low-carbon mortar alternatives with improved insulation and fire resistance.
🏛政策担当者:Highlights potential for building material standards to incorporate low-carbon alternatives, supporting emissions reduction targets.
📄 Abstract（原文）
The use of expanded clay as a supplementary cementitious material in mortar offers potential for reducing carbon dioxide (CO2) emissions and improving thermal insulation, but is limited by reduced mechanical performance. This study investigates combined effects of expanded clay incorporation (0%, 10%, 20%, 30% cement replacement) and elevated temperature exposure (25°C–800°C) on quarry sand-based mortars. Mechanical properties, mass loss, and microstructural changes were evaluated, along with statistical and sustainability assessments. Results show increasing expanded clay content reduced bulk density by 1.27%–2.14% and improved thermal insulation by 13.47%. Compressive and flexural strength decreased by 2.88%–6.97% at ambient temperature for 30% replacement. After high-temperature exposure, expanded clay mortars showed improved thermal stability, retaining 47.3%–61.21% of original strength at 800°C against 32.6%–33.3% for control. Performance declined significantly at 800°C due to cracking, void formation, and microstructural damage, with ultrasonic pulse velocity values below 3000 m/s. Elastic modulus variation was similar across all mortars. Statistical analysis confirmed significant effects of both variables (p < 0.05). Partial cement replacement reduced carbon dioxide emissions by 15%–30%. Overall, optimised expanded clay use balances mechanical performance, thermal resistance, and sustainability for low-carbon, temperature-resistant mortar systems.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1680/jensu.26.00023first seen 2026-09-06 05:09:53
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