Verification Method of Direct Air Capture by Cementitious Material Using Carbon Isotopes

IF 1.6 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Journal of Advanced Concrete Technology Pub Date : 2023-11-22 DOI:10.3151/jact.21.934

Zhenzhen Wang, Abudushalamu Aili, Masayo Minami, Ippei Maruyama

引用次数: 0

Abstract

Capturing atmospheric CO₂ into cement-based materials is a way to set off the CO₂ emissions of concrete production. This study proposes an experimental method to track the origin of cement paste that fixes CO₂ directly from the air under natural conditions. By exposing powders of well-hydrated cement paste to air, carbonated cement paste powders are obtained with different carbonation degrees. The inorganic carbon of these carbonated samples is extracted by dissolution in phosphoric acid, and the isotopic characteristics related to ¹³C and ¹⁴C are measured. The experimental results show that the ¹⁴C value of carbonated cement paste can be used as an indicator for tracing the origin of carbon.

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用碳同位素验证胶凝材料直接捕集空气的方法

将大气中的二氧化碳捕获到水泥基材料中是一种抵消混凝土生产过程中二氧化碳排放的方法。本研究提出了一种在自然条件下直接从空气中固定CO2的水泥膏体溯源的实验方法。将水化良好的水泥浆体粉末暴露在空气中，得到了不同碳化程度的水泥浆体粉。用磷酸溶解法提取碳酸化样品中的无机碳，测定其13C和14C的同位素特征。实验结果表明，碳化水泥浆体的14C值可作为碳源溯源的指标。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Advanced Concrete Technology 工程技术-材料科学：综合

CiteScore

3.70

自引率

10.00%

发文量

审稿时长

3.5 months

期刊介绍： JACT is fast. Only 5 to 7 months from submission to publishing thanks to electronic file exchange between you, the reviewers and the editors. JACT is high quality. Peer-reviewed by internationally renowned experts who return review comments to ensure the highest possible quality. JACT is transparent. The status of your manuscript from submission to publishing can be viewed on our website, greatly reducing the frustration of being kept in the dark, possibly for over a year in the case of some journals. JACT is cost-effective. Submission and subscription are free of charge . Full-text PDF files are available for the authors to open at their web sites. Scope: *Materials: -Material properties -Fresh concrete -Hardened concrete -High performance concrete -Development of new materials -Fiber reinforcement *Maintenance and Rehabilitation: -Durability and repair -Strengthening/Rehabilitation -LCC for concrete structures -Environmant conscious materials *Structures: -Design and construction of RC and PC Structures -Seismic design -Safety against environmental disasters -Failure mechanism and non-linear analysis/modeling -Composite and mixed structures *Other: -Monitoring -Aesthetics of concrete structures -Other concrete related topics