Mechanical Properties and Chloride Penetration Resistance of Low-Carbon Concrete with Blended Binder Systems
結合材混合システムを用いた低炭素コンクリートの力学特性と塩化物浸透抵抗性 (AI 翻訳)
Nam Kim, Seung Ryu
🤖 gxceed AI 要約
日本語
本研究は、高炉スラグ、フライアッシュ、シリカフュームおよび微粉末（FMP）を混和した低炭素コンクリートの力学特性と塩化物浸透抵抗性を実験的に評価した。FMP置換により圧縮強度が向上し、炭酸化速度係数が低減し、塩化物結合比が増加、見かけ拡散係数が減少することを示した。最適化された結合材混合システムは、耐久性を向上させつつセメント使用量削減に貢献する。
English
This study experimentally evaluated the mechanical properties and chloride penetration resistance of low-carbon concrete with blended binder systems incorporating GGBS, fly ash, silica fume, and fine mineral powder (FMP). FMP substitution increased compressive strength, reduced carbonation rate coefficients, increased chloride binding ratio, and decreased the apparent chloride diffusion coefficient. Optimized blended binder systems contribute to reduced cement usage while enhancing durability.
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
日本の建設業界では、低炭素コンクリートの開発が急務である。本研究成果は、高炉スラグやフライアッシュ等の副産物を活用した配合設計の最適化に有用であり、国土交通省の公共工事における低炭素化指針や民間建築物の環境性能評価に貢献する可能性がある。
In the global GX context
Globally, low-carbon concrete is a key strategy for decarbonizing the construction sector. This study provides empirical data on the durability and mechanical performance of blended binder systems, which are critical for the adoption of reduced-clinker cements in practice. The findings support the development of standards for low-carbon concrete in chloride-exposed environments.
👥 読者別の含意
🔬研究者:Provides experimental data on the combined effects of SCMs and FMP on concrete durability, useful for developing predictive models.
🏢実務担当者:Offers practical guidance on optimizing binder composition for low-carbon concrete with adequate chloride resistance.
🏛政策担当者:Supports the inclusion of blended binder systems in building codes for sustainable infrastructure.
📄 Abstract（原文）
The production of ordinary Portland cement (OPC) is associated with substantial CO 2 emissions, while reinforced concrete structures exposed to marine or deicing-salt environments require improved resistance to chloride-induced deterioration. Although supplementary cementitious materials (SCMs) and fine mineral powder (FMP) have been used to reduce cement consumption, further clarification is needed regarding how binder composition and curing condition jointly influence strength development, shrinkage, carbonation, chloride binding, and chloride transport. This study investigated the mechanical properties and chloride penetration resistance of low-carbon concrete with blended binder systems incorporating ground granulated blast-furnace slag (GGBS), fly ash (FA), silica fume (SF), and FMP. Concrete mixtures with design compressive strength levels of 30 and 45 MPa were prepared using OPC, GGBS, and FA binder systems with FMP substitution, and an 80 MPa ternary binder mixture containing FA and SF was also examined. The experimental program included compressive strength, flexural strength, splitting tensile strength, static modulus of elasticity, drying shrinkage, accelerated carbonation, salt-water immersion, water-soluble chloride, total chloride, chloride binding ratio, and apparent chloride diffusion coefficient evaluations. The results showed that FMP substitution increased compressive strength, reduced carbonation rate coefficients, increased chloride binding ratio, and decreased the apparent diffusion coefficient, particularly in blended binder systems. These findings indicate that optimized blended binder systems can contribute to low-carbon concrete with enhanced durability in chloride-bearing environments, provided that mechanical performance, dimensional stability, carbonation resistance, and chloride binding capacity are considered together.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.11648/j.ajce.20261403.16first seen 2026-07-05 05:01:03
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