Investigation of the Catalytic Liquid System Ratio on the Strength Performance of Geopolymer Concrete
| Autor: | Adekunle M Ajao, Anthony N. Ede, Festus Olutoge, John Oluwafemi, Tobit Igba, Solomon Oyebisi |
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| Rok vydání: | 2019 |
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| Zdroj: | Journal of Physics: Conference Series. 1378:032075 |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/1378/3/032075 |
| Popis: | 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 slag-based 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. |
| Databáze: | OpenAIRE |
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