Characterization of foamed concrete with different additives using multi-scale micro-computed tomography

Sang Yeop Chung; Ji Su Kim; Tong Seok Han; Dietmar Stephan; Paul H. Kamm; Mohamed Abd Elrahman

doi:10.1016/j.conbuildmat.2021.125953

Characterization of foamed concrete with different additives using multi-scale micro-computed tomography

Sang Yeop Chung, Ji Su Kim, Tong Seok Han, Dietmar Stephan, Paul H. Kamm, Mohamed Abd Elrahman

Department of Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

In this study, microstructural characterization of various foamed concrete specimens was conducted using multi-scale X-ray microcomputed tomography (micro-CT). Foamed concrete specimens with cement only and fine sand or supplementary cementing materials (SCMs), such as fly ash and silica fumes, were prepared, which can improve the mechanical properties of the foamed concrete. Various water/binder ratios were also considered for each specimen, and pore and solid structures of the foamed specimens were analyzed. Micro-CT images with pixel sizes of 24.97μm (upper scale) and 0.65μm (lower scale) were combined to investigate the material characteristics. The effects of SCMs on the material characteristics was examined and correlated with the compressive strength of the specimens. The specimens for the upper-scale analysis were used to measure the physical properties of the materials, whereas the detailed microstructural characteristics of the specimens were investigated using a lower-scale micro-CT with relatively small samples. The results from the micro-CT at different scales demonstrated that the solid structures in the foamed concrete significantly affected the material strength based on the SCM type and water/binder ratio.

Original language	English
Article number	125953
Journal	Construction and Building Materials
Volume	319
DOIs	https://doi.org/10.1016/j.conbuildmat.2021.125953
Publication status	Published - 2022 Feb 14

Bibliographical note

Funding Information:
This research was supported by the National Research Foundation of Korea, South Korea (NRF-2019R1A2C2086314). This work was also supported by KOREA HYDRO & NUCLEAR POWER CO. LTD, South Korea (No. 2019-TECH-01) and the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20194030202460).

Funding Information:
This research was supported by the National Research Foundation of Korea, South Korea ( NRF-2019R1A2C2086314 ). This work was also supported by KOREA HYDRO & NUCLEAR POWER CO., LTD, South Korea (No. 2019-TECH-01 ) and the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20194030202460 ).

Publisher Copyright:
© 2021 Elsevier Ltd

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering
Building and Construction
Materials Science(all)

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10.1016/j.conbuildmat.2021.125953

Cite this

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title = "Characterization of foamed concrete with different additives using multi-scale micro-computed tomography",

abstract = "In this study, microstructural characterization of various foamed concrete specimens was conducted using multi-scale X-ray microcomputed tomography (micro-CT). Foamed concrete specimens with cement only and fine sand or supplementary cementing materials (SCMs), such as fly ash and silica fumes, were prepared, which can improve the mechanical properties of the foamed concrete. Various water/binder ratios were also considered for each specimen, and pore and solid structures of the foamed specimens were analyzed. Micro-CT images with pixel sizes of 24.97μm (upper scale) and 0.65μm (lower scale) were combined to investigate the material characteristics. The effects of SCMs on the material characteristics was examined and correlated with the compressive strength of the specimens. The specimens for the upper-scale analysis were used to measure the physical properties of the materials, whereas the detailed microstructural characteristics of the specimens were investigated using a lower-scale micro-CT with relatively small samples. The results from the micro-CT at different scales demonstrated that the solid structures in the foamed concrete significantly affected the material strength based on the SCM type and water/binder ratio.",

author = "Chung, {Sang Yeop} and Kim, {Ji Su} and Han, {Tong Seok} and Dietmar Stephan and Kamm, {Paul H.} and Elrahman, {Mohamed Abd}",

note = "Funding Information: This research was supported by the National Research Foundation of Korea, South Korea (NRF-2019R1A2C2086314). This work was also supported by KOREA HYDRO & NUCLEAR POWER CO. LTD, South Korea (No. 2019-TECH-01) and the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20194030202460). Funding Information: This research was supported by the National Research Foundation of Korea, South Korea ( NRF-2019R1A2C2086314 ). This work was also supported by KOREA HYDRO & NUCLEAR POWER CO., LTD, South Korea (No. 2019-TECH-01 ) and the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20194030202460 ). Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

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doi = "10.1016/j.conbuildmat.2021.125953",

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AU - Chung, Sang Yeop

AU - Kim, Ji Su

AU - Han, Tong Seok

AU - Stephan, Dietmar

AU - Kamm, Paul H.

AU - Elrahman, Mohamed Abd

N1 - Funding Information: This research was supported by the National Research Foundation of Korea, South Korea (NRF-2019R1A2C2086314). This work was also supported by KOREA HYDRO & NUCLEAR POWER CO. LTD, South Korea (No. 2019-TECH-01) and the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20194030202460). Funding Information: This research was supported by the National Research Foundation of Korea, South Korea ( NRF-2019R1A2C2086314 ). This work was also supported by KOREA HYDRO & NUCLEAR POWER CO., LTD, South Korea (No. 2019-TECH-01 ) and the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20194030202460 ). Publisher Copyright: © 2021 Elsevier Ltd

PY - 2022/2/14

Y1 - 2022/2/14

N2 - In this study, microstructural characterization of various foamed concrete specimens was conducted using multi-scale X-ray microcomputed tomography (micro-CT). Foamed concrete specimens with cement only and fine sand or supplementary cementing materials (SCMs), such as fly ash and silica fumes, were prepared, which can improve the mechanical properties of the foamed concrete. Various water/binder ratios were also considered for each specimen, and pore and solid structures of the foamed specimens were analyzed. Micro-CT images with pixel sizes of 24.97μm (upper scale) and 0.65μm (lower scale) were combined to investigate the material characteristics. The effects of SCMs on the material characteristics was examined and correlated with the compressive strength of the specimens. The specimens for the upper-scale analysis were used to measure the physical properties of the materials, whereas the detailed microstructural characteristics of the specimens were investigated using a lower-scale micro-CT with relatively small samples. The results from the micro-CT at different scales demonstrated that the solid structures in the foamed concrete significantly affected the material strength based on the SCM type and water/binder ratio.

AB - In this study, microstructural characterization of various foamed concrete specimens was conducted using multi-scale X-ray microcomputed tomography (micro-CT). Foamed concrete specimens with cement only and fine sand or supplementary cementing materials (SCMs), such as fly ash and silica fumes, were prepared, which can improve the mechanical properties of the foamed concrete. Various water/binder ratios were also considered for each specimen, and pore and solid structures of the foamed specimens were analyzed. Micro-CT images with pixel sizes of 24.97μm (upper scale) and 0.65μm (lower scale) were combined to investigate the material characteristics. The effects of SCMs on the material characteristics was examined and correlated with the compressive strength of the specimens. The specimens for the upper-scale analysis were used to measure the physical properties of the materials, whereas the detailed microstructural characteristics of the specimens were investigated using a lower-scale micro-CT with relatively small samples. The results from the micro-CT at different scales demonstrated that the solid structures in the foamed concrete significantly affected the material strength based on the SCM type and water/binder ratio.

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DO - 10.1016/j.conbuildmat.2021.125953

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VL - 319

JO - Construction and Building Materials

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M1 - 125953

ER -

Characterization of foamed concrete with different additives using multi-scale micro-computed tomography

Abstract

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