Haddadian, Arian and Alnahhal, Ahmed Mahmoud and Alengaram, U. Johnson and Hung, Mo Kim and Ibrahim, Muhammad S. I. and Ayough, Pouria (2024) Mechanical and microstructural properties of structural and non-structural lightweight foamed concrete with coal bottom ash as cement and sand replacement material. Journal of Sustainable Cement-Based Materials, 13 (4). pp. 622-644. ISSN 2165-0373, DOI https://doi.org/10.1080/21650373.2023.2295505.
Full text not available from this repository.Abstract
This study aims to assess the feasibility of including coal-bottom ash (CBA) as a substitute for cement and fine aggregate, with a replacement ratio of 20%, and 75%, respectively, in the production of lightweight foamed concrete (LWFC) at two different densities: 1300 kg/m3 and 1700 kg/m3. The study provided data on both its fresh and hardened states. These include water absorption, density, compressive, splitting tensile strength, rupture modules, modulus of elasticity, X-ray Diffraction, and Field Emission Scanning Electron Microscope. The findings indicated that including CBA as a substitute for cement and fine aggregate can yield environmentally friendly foamed concrete suitable for structural applications, exhibiting a compressive strength of up to 25.5 MPa. In addition, decreasing the CBA aggregate size in specimens with a density of 1300 kg/m3 resulted in increased strength. The mixes that included CBA contained additional C-S-H gels, which led to a more compact structure.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Malaya (PV002-2019) |
| Uncontrolled Keywords: | coal bottom ash (CBA); cement replacement; foamed concrete; mechanical properties; microstructure |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering > Department of Civil Engineering Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 14 Nov 2024 06:27 |
| Last Modified: | 14 Nov 2024 06:27 |
| URI: | http://eprints.um.edu.my/id/eprint/45948 |
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