Utilization of high carbon fly ash and copper slag in electrically conductive controlled low strength material

S. Lim; W. Lee; H. Choo; C. Lee

doi:10.1016/j.conbuildmat.2017.09.071

Utilization of high carbon fly ash and copper slag in electrically conductive controlled low strength material

S. Lim, W. Lee, H. Choo, C. Lee

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

43 Citations (Scopus)

Abstract

The aim of this experimental investigation is to develop electrically conductive controlled low strength materials (CLSM) using both fly ash with high content of unburned carbon particles (HCFA) and copper slag as a fine aggregate, both of which are waste materials with low reuse rate. Various experiments, including flow consistency test, bulk density measurement, unconfined compression test, and electrical conductivity (σ_mix) measurement were performed on the developed electrically conductive CLSM. For comparison with the results of the developed conductive CLSM, various experiments were also performed on CLSM containing electrically nonconductive particles (low carbon fly ash (LCFA) and sand). The results of this study demonstrate that σ_mix of the tested CLSM specimens increases with increasing copper slag fraction in aggregate and the measured σ_mix of the CLSM based on HCFA is greater than that with LCFA because both HCFA (or unburned carbon particles) and copper slag are electrically conductive. The measured flow consistency, bulk density, and unconfined compressive strength (UCS) of conductive CLSM were comparable with those of nonconductive CLSM. Therefore, the electrically conductive CLSM can be developed using both HCFA and copper slag. Finally, the relationship between UCS and 1/σ_mix was also investigated in this study.

Original language	English
Pages (from-to)	42-50
Number of pages	9
Journal	Construction and Building Materials
Volume	157
DOIs	https://doi.org/10.1016/j.conbuildmat.2017.09.071
Publication status	Published - 2017 Dec 30

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea ( NRF ) grant funded by The Korea government ( MSIP ) ( NRF-2015R1A2A2A01006337 ) 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. 20161520101130 ).

Publisher Copyright:
© 2017 Elsevier Ltd

Keywords

Conductive CLSM
Controlled low strength material (CLSM)
Copper slag
Electrical conductivity
Fly ash
Reuse of waste materials

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
General Materials Science

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10.1016/j.conbuildmat.2017.09.071

Cite this

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title = "Utilization of high carbon fly ash and copper slag in electrically conductive controlled low strength material",

abstract = "The aim of this experimental investigation is to develop electrically conductive controlled low strength materials (CLSM) using both fly ash with high content of unburned carbon particles (HCFA) and copper slag as a fine aggregate, both of which are waste materials with low reuse rate. Various experiments, including flow consistency test, bulk density measurement, unconfined compression test, and electrical conductivity (σmix) measurement were performed on the developed electrically conductive CLSM. For comparison with the results of the developed conductive CLSM, various experiments were also performed on CLSM containing electrically nonconductive particles (low carbon fly ash (LCFA) and sand). The results of this study demonstrate that σmix of the tested CLSM specimens increases with increasing copper slag fraction in aggregate and the measured σmix of the CLSM based on HCFA is greater than that with LCFA because both HCFA (or unburned carbon particles) and copper slag are electrically conductive. The measured flow consistency, bulk density, and unconfined compressive strength (UCS) of conductive CLSM were comparable with those of nonconductive CLSM. Therefore, the electrically conductive CLSM can be developed using both HCFA and copper slag. Finally, the relationship between UCS and 1/σmix was also investigated in this study.",

keywords = "Conductive CLSM, Controlled low strength material (CLSM), Copper slag, Electrical conductivity, Fly ash, Reuse of waste materials",

author = "S. Lim and W. Lee and H. Choo and C. Lee",

note = "Funding Information: This work was supported by the National Research Foundation of Korea ( NRF ) grant funded by The Korea government ( MSIP ) ( NRF-2015R1A2A2A01006337 ) 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. 20161520101130 ). Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

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AU - Lee, W.

AU - Choo, H.

AU - Lee, C.

N1 - Funding Information: This work was supported by the National Research Foundation of Korea ( NRF ) grant funded by The Korea government ( MSIP ) ( NRF-2015R1A2A2A01006337 ) 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. 20161520101130 ). Publisher Copyright: © 2017 Elsevier Ltd

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N2 - The aim of this experimental investigation is to develop electrically conductive controlled low strength materials (CLSM) using both fly ash with high content of unburned carbon particles (HCFA) and copper slag as a fine aggregate, both of which are waste materials with low reuse rate. Various experiments, including flow consistency test, bulk density measurement, unconfined compression test, and electrical conductivity (σmix) measurement were performed on the developed electrically conductive CLSM. For comparison with the results of the developed conductive CLSM, various experiments were also performed on CLSM containing electrically nonconductive particles (low carbon fly ash (LCFA) and sand). The results of this study demonstrate that σmix of the tested CLSM specimens increases with increasing copper slag fraction in aggregate and the measured σmix of the CLSM based on HCFA is greater than that with LCFA because both HCFA (or unburned carbon particles) and copper slag are electrically conductive. The measured flow consistency, bulk density, and unconfined compressive strength (UCS) of conductive CLSM were comparable with those of nonconductive CLSM. Therefore, the electrically conductive CLSM can be developed using both HCFA and copper slag. Finally, the relationship between UCS and 1/σmix was also investigated in this study.

AB - The aim of this experimental investigation is to develop electrically conductive controlled low strength materials (CLSM) using both fly ash with high content of unburned carbon particles (HCFA) and copper slag as a fine aggregate, both of which are waste materials with low reuse rate. Various experiments, including flow consistency test, bulk density measurement, unconfined compression test, and electrical conductivity (σmix) measurement were performed on the developed electrically conductive CLSM. For comparison with the results of the developed conductive CLSM, various experiments were also performed on CLSM containing electrically nonconductive particles (low carbon fly ash (LCFA) and sand). The results of this study demonstrate that σmix of the tested CLSM specimens increases with increasing copper slag fraction in aggregate and the measured σmix of the CLSM based on HCFA is greater than that with LCFA because both HCFA (or unburned carbon particles) and copper slag are electrically conductive. The measured flow consistency, bulk density, and unconfined compressive strength (UCS) of conductive CLSM were comparable with those of nonconductive CLSM. Therefore, the electrically conductive CLSM can be developed using both HCFA and copper slag. Finally, the relationship between UCS and 1/σmix was also investigated in this study.

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KW - Copper slag

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Utilization of high carbon fly ash and copper slag in electrically conductive controlled low strength material

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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