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Incorporation of crumb rubber and air-entraining agent in ultra-lightweight cementitious composite: Evaluation of mechanical and acoustic properties

This research describes the usage of crumb rubber (CR) and air-entraining agent (AEA) to further reduce the density of lightweight cementitious composite into ultra-lightweight cementitious composites (ULCC), which has density lower than 800 kg/m(3). The effects of CR and AEA on workability, compres...

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Main Authors: Leong, Geok Wen, Chin, Tze Ming, Mo, Kim Hung, Ibrahim, Zainah, Putra, Azma, Othman, Muhammad Nur
Format: Article
Published: Elsevier 2021
Subjects:
T Technology (General)
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.um.edu.my/28281/
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spelling my.um.eprints.282812022-07-29T08:19:51Z http://eprints.um.edu.my/28281/ Incorporation of crumb rubber and air-entraining agent in ultra-lightweight cementitious composite: Evaluation of mechanical and acoustic properties Leong, Geok Wen Chin, Tze Ming Mo, Kim Hung Ibrahim, Zainah Putra, Azma Othman, Muhammad Nur T Technology (General) TA Engineering (General). Civil engineering (General) This research describes the usage of crumb rubber (CR) and air-entraining agent (AEA) to further reduce the density of lightweight cementitious composite into ultra-lightweight cementitious composites (ULCC), which has density lower than 800 kg/m(3). The effects of CR and AEA on workability, compressive strength, flexural strength, sound absorption and sound transmission loss of ULCC are evaluated. The dry densities of the ULCC produced are in the range of 711-857 kg/m(3). Compared with the control mix, the addition of 1% of AEA and inclusion 15% of CR have similar effect in reducing the density of ULCC, where the density is reduced by about 15%. Despite the decreased mechanical strength with the use of CR, the ULCC still possess good flexural strength of 2.4 MPa without AEA. Furthermore, the effect of CR is more significant than AEA in improving the sound absorption average (SAA) of ULCC which the SAA of the control mix is increased by 61.3%. Overall, the combination of CR and AEA reduced the density and improved the acoustic performance of ULCC. Elsevier 2021-10 Article PeerReviewed Leong, Geok Wen and Chin, Tze Ming and Mo, Kim Hung and Ibrahim, Zainah and Putra, Azma and Othman, Muhammad Nur (2021) Incorporation of crumb rubber and air-entraining agent in ultra-lightweight cementitious composite: Evaluation of mechanical and acoustic properties. Journal of Building Engineering, 42. ISSN 2352-7102, DOI https://doi.org/10.1016/j.jobe.2021.103034 <https://doi.org/10.1016/j.jobe.2021.103034>. 10.1016/j.jobe.2021.103034
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic T Technology (General)
TA Engineering (General). Civil engineering (General)
spellingShingle T Technology (General)
TA Engineering (General). Civil engineering (General)
Leong, Geok Wen
Chin, Tze Ming
Mo, Kim Hung
Ibrahim, Zainah
Putra, Azma
Othman, Muhammad Nur
Incorporation of crumb rubber and air-entraining agent in ultra-lightweight cementitious composite: Evaluation of mechanical and acoustic properties
description This research describes the usage of crumb rubber (CR) and air-entraining agent (AEA) to further reduce the density of lightweight cementitious composite into ultra-lightweight cementitious composites (ULCC), which has density lower than 800 kg/m(3). The effects of CR and AEA on workability, compressive strength, flexural strength, sound absorption and sound transmission loss of ULCC are evaluated. The dry densities of the ULCC produced are in the range of 711-857 kg/m(3). Compared with the control mix, the addition of 1% of AEA and inclusion 15% of CR have similar effect in reducing the density of ULCC, where the density is reduced by about 15%. Despite the decreased mechanical strength with the use of CR, the ULCC still possess good flexural strength of 2.4 MPa without AEA. Furthermore, the effect of CR is more significant than AEA in improving the sound absorption average (SAA) of ULCC which the SAA of the control mix is increased by 61.3%. Overall, the combination of CR and AEA reduced the density and improved the acoustic performance of ULCC.
format Article
author Leong, Geok Wen
Chin, Tze Ming
Mo, Kim Hung
Ibrahim, Zainah
Putra, Azma
Othman, Muhammad Nur
author_facet Leong, Geok Wen
Chin, Tze Ming
Mo, Kim Hung
Ibrahim, Zainah
Putra, Azma
Othman, Muhammad Nur
author_sort Leong, Geok Wen
title Incorporation of crumb rubber and air-entraining agent in ultra-lightweight cementitious composite: Evaluation of mechanical and acoustic properties
title_short Incorporation of crumb rubber and air-entraining agent in ultra-lightweight cementitious composite: Evaluation of mechanical and acoustic properties
title_full Incorporation of crumb rubber and air-entraining agent in ultra-lightweight cementitious composite: Evaluation of mechanical and acoustic properties
title_fullStr Incorporation of crumb rubber and air-entraining agent in ultra-lightweight cementitious composite: Evaluation of mechanical and acoustic properties
title_full_unstemmed Incorporation of crumb rubber and air-entraining agent in ultra-lightweight cementitious composite: Evaluation of mechanical and acoustic properties
title_sort incorporation of crumb rubber and air-entraining agent in ultra-lightweight cementitious composite: evaluation of mechanical and acoustic properties
publisher Elsevier
publishDate 2021
url http://eprints.um.edu.my/28281/
_version_ 1740826001209819136
score 13.211869

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