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.
Full text not available from this repository.Abstract
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.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Education, Malaysia [FP056-2018A (FRGS/1/2018/TK06/UM/02/1)] |
| Uncontrolled Keywords: | Ultra-lightweight cementitious composite; Crumb rubber; Air-entraining agent; Perlite microspheres; Acoustic properties |
| Subjects: | T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering > Department of Civil Engineering |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 29 Jul 2022 08:19 |
| Last Modified: | 29 Jul 2022 08:19 |
| URI: | http://eprints.um.edu.my/id/eprint/28281 |
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