低炭素酸化マグネシウム系セメント（MOSC）耐火ボードの力学・燃焼性能に関する実験的研究
Experimental study on mechanical and combustion performances of low carbon magnesium oxysulfate cement (MOSC) fire-resistant board (原題)
Zigeng Wang, Yue Li, Chongying Du, Luowen Peng, Naini Zhao
🤖 gxceed AI 要約
日本語
従来のMOSC耐火ボードは製造時にCO2を多く排出するため、ブルーサイトと希硫酸から硫酸マグネシウムを調製し低炭素化を図った新規ボードを試作した。曲げ強度は最大3.42MPa、熱伝導率は最小1.067W/(m·K)と従来品より良好な物性を示した。燃焼過程では水和生成物が分解してMgOを生成し、細孔構造が変化・粗大化することを明らかにした。
English
A novel low-carbon magnesium oxysulfate cement (MOSC) fire-resistant board was developed by preparing magnesium sulfate from brucite and dilute sulfuric acid instead of magnesium sulfate heptahydrate. The boards showed higher flexural strength (max 3.42 MPa) and lower thermal conductivity (min 1.067 W/(m·K)). Micro-analysis revealed hydration products decompose to MgO during combustion, enlarging pores and increasing porosity.
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
建材の製造段階CO2削減はScope 3排出量や embodied carbon 開示に関わる。日本の建設業でも低炭素建材の調達・開示ニーズが高まる中、材料レベルでの炭素削減選択肢を示す基礎的知見として参考になる。
In the global GX context
Embodied-carbon reduction in building materials feeds directly into Scope 3 accounting and green-building procurement criteria under frameworks like CSRD and ISSB. This study offers material-level evidence on lowering production emissions for fire-resistant boards, relevant to construction-sector decarbonization disclosure.
👥 読者別の含意
🔬研究者:低炭素セメント系材料の物性と燃焼挙動に関する実験データとして参照できる。
🏢実務担当者:低炭素耐火建材の調達・仕様検討における材料選択肢の一つとして把握できる。
📄 Abstract（原文）
The conventional magnesium oxysulfate cement (MOSC) fire-resistant board is composed of light-burned magnesium oxide, magnesium sulfate heptahydrate, lightweight admixtures, and glass fiber mesh fabric, and exhibits significant carbon dioxide emissions during the production. This study prepared magnesium sulfate using brucite and dilute sulfuric acid as a substitute for magnesium sulfate heptahydrate, developing a novel low carbon MOSC fire-resistant board designed to reduce its carbon emission. The board's flexural strength, thermal conductivity, and combustion performance were evaluated. The experimental results demonstrated that the low carbon MOSC fire-resistant boards exhibited higher flexural strength with a maximum strength of 3.42 MPa. The thermal conductivity values of the low carbon MOSC fire-resistant boards were lower with a minimum value of 1.067 W/(m·K). In addition, the micro testing analysis revealed significant changes in the pore structure of the MOSC fire-resistant boards during the combustion process. The primary hydration products-5·1·7 crystalline phase, 3·1·8 crystalline phase, and Mg(OH)₂-all decomposed under combustion, forming the main product MgO, which altered both the material composition and pore structure evolution of the boards. At high temperatures, the fire-resistant board underwent a transition from dehydration to structural loosening, ultimately resulting in enlarged pore sizes and increased porosity.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.mtcomm.2026.116440first seen 2026-10-22 04:52:36 · last seen 2026-11-06 04:51:18
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