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Improving the Volume Stability of Low-Carbon Ultra-High Performance Concrete Through the Employment of Internal Curing

内部養生による低炭素超高性能コンクリートの体積安定性の向上 (AI 翻訳)

Y ZHANG, Yanyan Zhou, Asigen, Jinshan Yu, Meiqi Cao, Mandula

Materials📚 査読済 / ジャーナル2026-07-19#その他Origin: CN経営インパクト: コスト削減対象セクター: construction
DOI: 10.3390/ma19143100
原典: https://doi.org/10.3390/ma19143100

🤖 gxceed AI 要約

日本語

高容量フライアッシュと風成砂を用いた低炭素超高性能コンクリート（UHPC）の体積安定性向上のため、超吸水性ポリマー（SAP）を内部養生材として添加。SAPの粒径0.3％（180-600μm）で収縮と早期ひび割れを低減しつつ圧縮強度を維持。微細構造分析によりメカニズムを解明。

English

This study improves volume stability of low-carbon ultra-high performance concrete (UHPC) with high-volume fly ash and aeolian sand by adding superabsorbent polymer (SAP) for internal curing. 0.3% SAP with particle size 180-600 μm significantly reduces shrinkage and early-age cracking while maintaining compressive strength. Microstructural analysis reveals underlying mechanisms.

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

日本でも低炭素コンクリートの開発は建設分野の脱炭素化に重要だが、本論文で用いられた風成砂やフライアッシュの配合は中国特有の資材を想定。日本の材料に適用する場合、配合調整が必要。

In the global GX context

The study addresses low-carbon concrete, a key area for decarbonizing construction globally. While the specific materials (aeolian sand) are region-specific, the internal curing method with SAP is broadly applicable. Contributes to reducing carbon footprint of UHPC, aligning with global sustainability goals.

👥 読者別の含意

🔬研究者:Provides experimental data on SAP as internal curing agent for low-carbon UHPC, with insights on particle size and dosage optimization.

🏢実務担当者:Offers a practical method to reduce shrinkage and cracking in low-carbon concrete, potentially improving durability and reducing maintenance costs.

📄 Abstract（原文）

High-volume fly ash binder and aeolian sand have been widely used in the production of low-carbon ultra-high performance concrete (UHPC) owing to their environmental and economic benefits. However, such low-carbon UHPC still faces the volume stability issues, including autogenous shrinkage, drying shrinkage and early-age cracking. In this study, a superabsorbent polymer (SAP) was incorporated into low-carbon UHPC containing high-volume fly ash and aeolian sand to improve its volume stability through internal curing. The effects of SAP particle size and dosage on the mechanical properties and volume stability of low-carbon UHPC were investigated. Results showed that the addition of 0.3% SAP with a particle size of 180–600 μm significantly reduced shrinkage and early-age cracking while maintaining the compressive strength. Furthermore, the microstructure of low-carbon UHPC was characterized using advanced techniques to shed light on the underlying mechanisms.

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