Isotope chemistry to trace carbon mineralization in construction materials
アイソトープ化学による建設材料中の炭素鉱物化の追跡 (AI 翻訳)
Daniel Jansen, Thomas Matschei, Robert van Geldern, Johannes Barth, Ruben Snellings
🤖 gxceed AI 要約
日本語
本稿は、セメント系材料における炭素同位体分析の文献と応用可能性を概説する。安定炭素同位体比は炭酸化プロセスの追跡に有用であり、特に炭酸化硬化や再生コンクリート微粉末の特性評価に役立つ。しかし、同位体分別のメカニズムは完全には理解されておらず、温度やpH、湿度などの影響を評価する必要がある。
English
This paper reviews the use of stable carbon isotope ratios to track carbonation in cementitious materials, with applications in carbonation hardening and recycled concrete fines. It highlights the potential for circular construction but notes that isotope fractionation mechanisms are not fully understood, requiring further research on factors like temperature, pH, and humidity.
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、コンクリートの炭酸化によるCO₂固定が注目されており、SSBJやカーボンニュートラル実現に向けた技術として本手法は価値がある。特に、再生骨材や炭酸化硬化コンクリートの品質評価に応用できる可能性がある。
In the global GX context
Global efforts to decarbonize construction materials increasingly focus on carbon mineralization. This isotope-based method could support carbon accounting and verification for carbonated concrete, aligning with circular construction goals and potential incorporation into frameworks like the EU's Construction Products Regulation.
👥 読者別の含意
🔬研究者:Isotope geochemists and cement researchers can leverage this method for quantifying carbonation in concrete.
🏢実務担当者:Concrete producers and recycling firms may use isotope analysis to certify carbon uptake in recycled aggregates.
🏛政策担当者:Regulators developing standards for carbon removal in construction should consider isotope methods for verification.
📄 Abstract（原文）
This contribution presents an overview of the current literature and application potential of carbon isotope analysis in cementitious systems. Stable carbon isotope ratios (¹³C/¹²C) offer powerful insights for tracking carbonation processes, especially in the context of carbonation hardening and the characterization of recycled concrete fines. Isotope methods can help determine the extent of carbonation and to distinguish between naturally formed carbonates and those resulting from enhanced carbonation by fossil CO2. This approach offers a valuable tool in circular construction strategies. Alongside published studies, we highlight recent experimental work that further demonstrates potential applications of this method. However, to fully exploit carbon isotopes as a diagnostic tool, several questions remain open. In particular, isotope fractionation during carbonation is not yet fully understood. Key factors of influence include temperature, pH, relative humidity, porosity of the carbonated material and the isotope composition of the CO₂ source. Moreover, differences between aqueous and gaseous carbonation must be evaluated, as they may result in different isotope fractionation. Understanding these fractionation mechanisms is essential to establish robust interpretation frameworks for isotope-based approaches in cement and concrete research and applications.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.21809/rilemtechlett.2026.232first seen 2026-06-23 05:31:18
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