Oyebisi, S.O and Ede, A. N. and Olutoge, F. A. and Igba, T. and Oluwafemi, John and Ajao, Adekunle M (2019) Investigation of the Catalytic Liquid System Ratio on the Strength Performance of Geopolymer Concrete. In: International Conference on Engineering for Sustainable World, 2019, Online.
![[img]](http://eprints.covenantuniversity.edu.ng/style/images/fileicons/application_pdf.png) |
PDF
Download (641kB) |
Abstract
This study assessed the effects of the varying ratio of alkaline activators on the short-term mechanical property of slag-based geopolymer concrete (GPC) incorporated with corncob ash (CCA). Consequently, the study harnessed the waste products, eco-friendly and low-carbon footprint materials, ground granulated blast furnace slag (GGBFS) and corncob ash (CCA) as binding agents in a bid to design and develop a sustainable product. Moreover, sodium hydroxide (NaOH) solution and sodium silicate (Na2SiO3) gel were used as a catalytic liquid system (CLS) for the activation of the concrete products at the varying ratio of 1.5: 1, 2: 1, 2.5: 1 and 3: 1 for Na2SiO3 gel: NaOH solution respectively. Furthermore, GGBFS was replaced by CCA in 20, 40, 60, 80, and 100% volume using grade 30 MPa concrete (M 30) as a mix design proportion. The mix was activated with 14 molar concentrations of CLS. Subsequently, the concrete samples were cured under the ambient conditions and tested for compressive strength at 7, 28, 56 and 90 days. The experimental finding revealed that the optimum strength performance of slagbased GPC incorporated with CCA is achieved at a ratio of 2.5: 1 for Na2SiO3 gel: NaOH solution respectively when compared with 1.5: 1, 2: 1 and 3: 1 for the concrete. Therefore, the strength performance of GPC depends on the varying ratio of alkaline liquid and must be properly experimented to ascertain its best performance on the strength properties of GPC.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Uncontrolled Keywords: | Geopolymer concrete, corncob ash, ground granulated blast furnace slag, sodium silicate, sodium hydroxide, compressive strength |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment |
| Depositing User: | nwokealisi |
| Date Deposited: | 12 Jan 2023 13:42 |
| Last Modified: | 12 Jan 2023 13:42 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/16515 |
Actions (login required)
 |
View Item |
