Mo, Kim Hung and Yeap, Kee Wei and Alengaram, Ubagaram Johnson and Jumaat, Mohd Zamin and Bashar, Iftekhair Ibnul (2018) Bond strength evaluation of palm oil fuel ash-based geopolymer normal weight and lightweight concretes with steel reinforcement. Journal of Adhesion Science and Technology, 32 (1). pp. 19-35. ISSN 0169-4243, DOI https://doi.org/10.1080/01694243.2017.1336195.
Full text not available from this repository.Abstract
This article presents a comparison of the bond behaviour between palm oil fuel ash (POFA)-derived geopolymer and conventional cement-based normal weight and lightweight concretes. A total of 16 variables were tested, which includes concrete cover (50 and 100 mm), bar diameter (12 and 16 mm) and types of concrete (POFA-based geopolymer normal/ lightweight concrete and cement-based normal/lightweight concrete). Results showed that the bond strength of cement-based concretes had higher critical bond stress and ultimate bond strength as well as lower slip at the ultimate bond strength compared to the corresponding POFA-based geopolymer concretes. The cement-based and geopolymer lightweight concrete specimens also exhibited greater bond strength than the normal weight concrete specimens. All of the concrete specimens generally exhibited similar bond stress-slip curves. Besides that, bond strength models proposed in the past predicted satisfactory match (difference of up to 35%) to the experimental ultimate bond strength values in the case of cement-based normal weight concrete and geopolymer concrete whereas a difference in the range of 16–138% was found for the case of lightweight concrete.
| Item Type: | Article |
|---|---|
| Funders: | University of Malaya [grant BK050-2016] |
| Uncontrolled Keywords: | Bond strength; adhesion; bond stress-slip; geopolymer concrete; lightweight concrete |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 21 May 2019 08:04 |
| Last Modified: | 21 May 2019 08:04 |
| URI: | http://eprints.um.edu.my/id/eprint/21281 |
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