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The mechanism for bond behavior of concrete with two-staged treated rubber filled steel tube

Rubberized concrete, due to its lower compressive strength, has been applied as the infill in concrete filled steel tube (CFST) to offset the strength reduction. A method to improve the rubberized concrete microstructure is through a two-staged rubber treatment, which incorporates the surface treatm...

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Main Authors: Abu Bakar, Nabilah, Safiee, Nor Azizi, Mohd Nasir, Noor Azline, Abdul Rahman, Muhammad Fakhrul Radzi, Midhin, Abdulrahman Khaleel
Format: Article
Published: Taylor and Francis 2022
Online Access:http://psasir.upm.edu.my/id/eprint/103632/
https://www.tandfonline.com/doi/abs/10.1080/19648189.2022.2059704
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spelling my.upm.eprints.1036322023-05-12T07:25:28Z http://psasir.upm.edu.my/id/eprint/103632/ The mechanism for bond behavior of concrete with two-staged treated rubber filled steel tube Abu Bakar, Nabilah Safiee, Nor Azizi Mohd Nasir, Noor Azline Abdul Rahman, Muhammad Fakhrul Radzi Midhin, Abdulrahman Khaleel Rubberized concrete, due to its lower compressive strength, has been applied as the infill in concrete filled steel tube (CFST) to offset the strength reduction. A method to improve the rubberized concrete microstructure is through a two-staged rubber treatment, which incorporates the surface treatment of rubber and the use of blended cement. However, the bond behavior of such material in CFST has not been investigated. In this study, concrete filled steel tubes with different mixes and thicknesses were tested under push-out test to investigate the parameters influencing its bond behavior. The mixes include normal concrete, concrete with chemically treated rubber as 10% aggregate replacement, and concrete with two-stage rubber treatment incorporating 15% metakaolin as cement replacement. It is found that the wall thickness plays a major role in the bond strength of CSFT, and could be increased for square sections with very weak bond strength. Based on the experimental work, the improvement of microstructure due to the inclusion of metakaolin and surface treatment of rubber increases the bond strength significantly, even higher than the normal concrete. Thus, concrete with two-staged treated rubber CFST could be utilized as a construction member due to its comparable compressive and bond strengths. Taylor and Francis 2022 Article PeerReviewed Abu Bakar, Nabilah and Safiee, Nor Azizi and Mohd Nasir, Noor Azline and Abdul Rahman, Muhammad Fakhrul Radzi and Midhin, Abdulrahman Khaleel (2022) The mechanism for bond behavior of concrete with two-staged treated rubber filled steel tube. European Journal of Environmental and Civil Engineering, 27 (2). pp. 647-662. ISSN 1964-8189; ESSN: 2116-7214 https://www.tandfonline.com/doi/abs/10.1080/19648189.2022.2059704 10.1080/19648189.2022.2059704
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description Rubberized concrete, due to its lower compressive strength, has been applied as the infill in concrete filled steel tube (CFST) to offset the strength reduction. A method to improve the rubberized concrete microstructure is through a two-staged rubber treatment, which incorporates the surface treatment of rubber and the use of blended cement. However, the bond behavior of such material in CFST has not been investigated. In this study, concrete filled steel tubes with different mixes and thicknesses were tested under push-out test to investigate the parameters influencing its bond behavior. The mixes include normal concrete, concrete with chemically treated rubber as 10% aggregate replacement, and concrete with two-stage rubber treatment incorporating 15% metakaolin as cement replacement. It is found that the wall thickness plays a major role in the bond strength of CSFT, and could be increased for square sections with very weak bond strength. Based on the experimental work, the improvement of microstructure due to the inclusion of metakaolin and surface treatment of rubber increases the bond strength significantly, even higher than the normal concrete. Thus, concrete with two-staged treated rubber CFST could be utilized as a construction member due to its comparable compressive and bond strengths.
format Article
author Abu Bakar, Nabilah
Safiee, Nor Azizi
Mohd Nasir, Noor Azline
Abdul Rahman, Muhammad Fakhrul Radzi
Midhin, Abdulrahman Khaleel
spellingShingle Abu Bakar, Nabilah
Safiee, Nor Azizi
Mohd Nasir, Noor Azline
Abdul Rahman, Muhammad Fakhrul Radzi
Midhin, Abdulrahman Khaleel
The mechanism for bond behavior of concrete with two-staged treated rubber filled steel tube
author_facet Abu Bakar, Nabilah
Safiee, Nor Azizi
Mohd Nasir, Noor Azline
Abdul Rahman, Muhammad Fakhrul Radzi
Midhin, Abdulrahman Khaleel
author_sort Abu Bakar, Nabilah
title The mechanism for bond behavior of concrete with two-staged treated rubber filled steel tube
title_short The mechanism for bond behavior of concrete with two-staged treated rubber filled steel tube
title_full The mechanism for bond behavior of concrete with two-staged treated rubber filled steel tube
title_fullStr The mechanism for bond behavior of concrete with two-staged treated rubber filled steel tube
title_full_unstemmed The mechanism for bond behavior of concrete with two-staged treated rubber filled steel tube
title_sort mechanism for bond behavior of concrete with two-staged treated rubber filled steel tube
publisher Taylor and Francis
publishDate 2022
url http://psasir.upm.edu.my/id/eprint/103632/
https://www.tandfonline.com/doi/abs/10.1080/19648189.2022.2059704
_version_ 1768009478054084608
score 13.211869

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