マグネシウムアルミネートスピネル強化低炭素イーリマイト-ベライト-フェライト-MAセメント：水和特性と耐高温メカニズム
A novel magnesium aluminate spinel reinforced low-carbon ye'elimite-belite-ferrite-MA cement: hydration characteristics and high-temperature resistance mechanism (原題)
C. Zhang, Changzai Ren, Shuang Wu, Kai Wu, Tingting Zhang, Ge Lan
🤖 gxceed AI 要約
日本語
鉄-rich硫黄アルミネートセメントの高温強度低下を解決するため、フェライト(C4AF)をマグネシウムアルミネートスピネル(MA)で段階的に置換した新規低炭素YBFMセメントを設計。MA置換率10%で28日圧縮強度77.95MPa、気孔率9.7%を達成し、150℃・300℃暴露後も高い残存強度を保持。二次アルミドロスやスラグ等の産業副産物を原料とする製造可能性も実証した。
English
A novel low-carbon ye'elimite-belite-ferrite-magnesium aluminate spinel (YBFM) cement was designed by substituting ferrite with MA to overcome high-temperature strength loss in iron-rich sulphoaluminate cement. At 10% MA substitution, 28-day compressive strength reached 77.95 MPa with 9.7% porosity, retaining 71.14 MPa and 65.69 MPa after 150°C and 300°C exposure. Feasibility using secondary aluminum dross, carbide slag, steel slag, and desulfurization gypsum was verified.
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
セメント産業は日本のCO2排出の主要源であり、低炭素セメント材料の開発はGX推進に直結する。ただし本論文は材料科学的知見が中心で、SSBJ開示や投資家対応への直接的示唆は乏しい。
In the global GX context
Cement production accounts for roughly 7-8% of global CO2 emissions, making low-carbon cementitious materials central to industrial decarbonization pathways under ISSB/CSRD disclosure regimes. This paper offers material-science evidence on high-temperature-resistant low-carbon cement, relevant to hard-to-abate sector transition planning.
👥 読者別の含意
🔬研究者:低炭素セメントの高温耐久性向上に向けたMA置換の材料設計指針を提供する。
🏢実務担当者:セメント・建設企業が高温環境向け低炭素材料の原料転換（産業副産物活用）を検討する際の参考になる。
📄 Abstract（原文）
As a promising low-carbon alternative, iron-rich sulphoaluminate cement demonstrates good durability against chloride ingress and sulfate attack. However, it exhibits a significant loss of strength after exposure to elevated temperatures. Based on this, a novel low-carbon ye'elimite-belite-ferrite-magnesium aluminate spinel (YBFM) cement was designed by progressively substituting the ferrite (C 4 AF) with magnesium aluminate spinel (MA). The effects of substitution ratio of MA for C 4 AF on the hydration process, microstructure evolution, macroscopic mechanical properties, and stability after high-temperature (HT) exposure of YBFM cement were investigated. The results showed that early hydration heat release was retarded with the MA substitution ratio increasing from 0 to 18%. When MA substitution ratio reached 10%, hydration heat release was moderate, hydration products were mainly composed of ettringite (AFt) along with abundant amorphous phases, and the microstructure became dense, which ultimately yielded a low 28 d porosity of 9.7% and a compressive strength of 77.95 MPa. After exposure to HT, the samples retained high residual strengths of 71.14 MPa after 150 °C and 65.69 MPa after 300 °C measured at 28 d, owing to the thermal stability of MA and supporting role of the hydration products from C 4 A 3 $ and C 4 AF. Furthermore, the feasibility of preparing YBFM cement using secondary aluminum dross, carbide slag, steel slag, and desulfurization gypsum as raw materials has been verified. The performance of YBFM cement indicates its promising application prospects in enhancing the HT resistance of salt attack resistant cementitious materials.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.cscm.2026.e06522first seen 2026-09-12 05:03:56
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