Article detail · 2020
Influence of nano SiO 2 and nano CaCO 3 particles on strength, workability, and microstructural properties of fly ash‐based geopolymer
Journal
Structural Concrete- Year
- 2020
- Type
- article
Data source split
- YÖKSİS venue Structural Concrete
- OpenAlex OpenAlex enrichment (abstract, citations, topics)
Abstract
OpenAlex · English
Abstract The influence of nano SiO 2 (NS) and CaCO 3 (NC) particles on the properties of class F fly ash based geopolymer mortar activated with different sodium ion concentrations have been investigated. Mortar mixture proportions were 1:3:0.3 for binder, sand, and water, respectively. Nano SiO 2 and CaCO 3 particles were replaced with a binder by weight basis at the ratios of 1, 2, and 3% in the mixtures. Sodium concentrations amount used were 8, 10, and 12% Na + of binder content. Geopolymer mortar samples were cured at 60, 75, and 90°C in a furnace for 24, 48, and 72 hr. After the heat curing process, flexural, and compressive strength tests were performed. The changes in the microstructure of geopolymer due to influence of nanoparticles were examined by utilizing isothermal calorimetric studies on geopolymer paste, and field‐emission scanning electron microscopy (FESEM). Based on laboratory work results, it was concluded that for all sodium ion concentrations, the addition of nano SiO 2 and CaCO 3 particles improved the flexural and compressive strengths after 24 hr heat curing. However, the favorable effects of nanoparticles on strength properties tend to disappear after 48 and 72 hr heat curing. The results of isothermal calorimetric studies showed that nano SiO 2 and CaCO 3 particles accelerated the geopolymeric reactions at an early age. FESEM results showed that additions of nanoparticles made the microstructure of geopolymer products more intense and compact.
Topics
Citations
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76 citations
OpenAlex cited_by_count (cache / database)
21 publications in the local catalog that cite this work (OpenAlex reference match; not the full global list).
- The effect of micro-SiO2 and micro-Al2O3 additive on the strength properties of ceramic powder-based geopolymer pastes 2022
- Influences of high temperature on mechanical properties of fly ash based geopolymer mortars reinforced with PVA fiber 2021
- Effect of addition diatomite powder on mechanical strength, elevated temperature resistance and microstructural properties of industrial waste fly ash-based geopolymer 2023
- Unary, binary and ternary use of slag, nano-CaCO3, and cement to enhance freeze-thaw durability in fly ash-based geopolymer concretes 2025
- Effect of silica fume and waste rubber on the performance of slag-based geopolymer mortars under high temperatures 2023
- Evaluation of diatomite substitute with thermal power plant waste fly ash in sustainable geopolymer through life cycle assessment 2025
- Evaluation of diatomite substitute with thermal power plant waste fly ash in sustainable geopolymer through life cycle assessment 2025
- Investigation of mechanical properties, high-temperature resistance and microstructural properties of diatomite-containing geopolymer mortars 2022
- Evaluation of diatomite substitute with thermal power plant waste fly ash in sustainable geopolymer through life cycle assessment 2025
- Effect of Nano-SiO2 on Strength and Hydration Characteristics of Ternary Cementitious Systems 2023