Analysis of carbonation characteristics on waste concrete (폐콘크리트의 탄산화 특성 분석)

Nam-Il Kim (김남일); Jong Tae Lee (이종태); Chu Yong-Sik (추용식)

doi:10.6111/JKCGCT.2022.32.4.151

Analysis of carbonation characteristics on waste concrete

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2022, 32(4), pp.151-158
DOI : 10.6111/JKCGCT.2022.32.4.151
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering
Received : July 28, 2022
Accepted : August 16, 2022
Published : August 31, 2022

Nam-Il Kim ¹, Jong Tae Lee ¹, Chu Yong-Sik ¹

¹한국세라믹기술원

Accredited

ABSTRACT

In this study, the waste concrete sample obtained as various particle size (0~2.36 mm) was carried out the basic measurements and carbonation for analyzing the possibility of its carbonation. It was then investigated some analysis such as crystallization (XRD pattern), microstructure (SEM), and the production of CaCO3 through the ignition loss (TG-DTA). The content of CaCO3 in the waste concrete sample before carbonation was found in 14.51 % and 28.52 % after carbonation in 24 hours. Moreover, the content of CaCO3 carbonated in 24 hours with fine grinded waste concrete sample was 32.73 %. The carbonation of the waste concrete sample was rapidly performed up to 6 hours, but gradually increased from 12 to24 hours. Especially, the amount of CaCO3 between 12 and 24 hours was only produced 2.32 %. The calcite-shaped CaCO3 crystals after carbonation of the waste concrete sample were found in microstructure and their peaks were strongly detected on XRD pattern.

KEYWORDS

Carbonation, Waste concrete, Carbon neutral, Calcite, Calcium carbonate

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* References for papers published after 2023 are currently being built.

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Analysis of carbonation characteristics on waste concrete

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* References for papers published after 2023 are currently being built.

Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Analysis of carbonation characteristics on waste concrete

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