ISSN:
Website: www.jomc.vn
Effect of superplasticizer on properties of Geopolymer mortar containing fly ash and ground granulated blast furnace slag
Abstract
The paper presents the effect of two types of superplasticizers (SP) on the properties of geopolymer mortar made with fly ash and ground granulated blast furnace slag (GGBFS). The geopolymer mortar was produced using sodium silicate, fly ash, GGBFS, river sand, water, and two types of SP. Experimental results indicate that each type of superplasticizer affects the properties of geopolymer mortar differently, however the ifferences are not significant. Increasing the SP content improves the workability of geopolymer mortar, decreases compressive and flexural strength at early ages (3 and 7 days) while having little effect at 28 days. The compressive and flexural strength of geopolymer mortar is lower than that of PCB40 cement mortar. The influence of SP on the properties of cement mortar is more effective compared to geopolymer mortar.
References
- Davidovits, J., Environmentally Driven Geopolymer Cement Applications. 2002.
- Davidovits, J., False Values on CO2 Emission for Geopolymer Cement/Concrete. 2015.
- McLellan, B., et al., Costs and carbon emissions for Geopolymer pastes in comparison to ordinary Portland cement. Journal of Cleaner Production - J CLEAN PROD, 2011. 19: p. 1080-1090.
- Phoo-ngernkham, T., et al., A Mix Design Procedure for Alkali-Activated High Calcium Fly Ash Concrete Cured at Ambient Temperature. Advances in Materials Science and Engineering, 2018. 2018.
- Reed, M., W. Lokuge, and W. Karunasena, Fibre-reinforced Geopolymre concrete with ambient curing for in situ applications. Journal of Materials Science, 2014. 49.
- Jithendra, C. and S. Elavenil, Role of Superplasticizer on GGBS based Geopolymer Concrete under ambient curing. Materials Today: Proceedings, 2019. 18: p. 148-154.
- Mabroum, S., et al., Mine wastes based Geopolymes: A critical review. Cleaner Engineering and Technology, 2020. 1: p. 100014.
- Hadi, M.N.S., N.A. Farhan, and M.N. Sheikh, Design of Geopolymer concrete with GGBFS at ambient curing condition using Taguchi method. Construction and Building Materials, 2017. 140: p. 424-431.
- Omer, S.A., R. Demirboga, and W.H. Khushefati, Relationship between compressive strength and UPV of GGBFS based Geopolymer mortars exposed to elevated temperatures. Construction and Building Materials, 2015. 94: p. 189-195.
- Ramachandran, V.S., Concrete Admixtures Handbook: Properties, Science and Technology. 1996: William Andrew.