| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Nguyen, Tien-Dung
Imperial College London
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2022Potential additives for magnesia-based concrete with enhanced performance and propensity for CO2 sequestrationcitations
- 2022New frontiers in sustainable cementscitations
- 2022Potential additives for magnesia-based concrete with enhanced performance and propensity for CO 2 sequestrationcitations
- 2021Improving the carbonation resistance of Na2CO3-activated slag mixes via the use of reactive MgO and nucleation seedingcitations
- 2018Improving the Carbonation of Reactive MgO Cement Concrete via the Use of NaHCO3 and NaClcitations
- 2018Improving the Carbonation of Reactive MgO Cement Concrete via the Use of NaHCO 3 and NaClcitations
- 2018Development of MgO concrete with enhanced hydration and carbonation mechanismscitations
- 2017Performance and microstructural development of MgO-SiO 2 binders under different curing conditionscitations
- 2017Influence of nucleation seeding on the performance of carbonated MgO formulationscitations
- 2017Performance and microstructural development of MgO-SiO2 binders under different curing conditionscitations
- 2016Engineering properties and durability of high-strength self-compacting concrete with no-cement SFC bindercitations
- 2016Improving the performance of reactive MgO cement-based concrete mixescitations
- 2016Sulfate resistance of low energy SFC no-cement mortarcitations
- 2015Influence of circulating fluidized bed combustion (CFBC) fly ash on properties of modified high volume low calcium fly ash (HVFA) cement paste
Places of action
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article
Influence of circulating fluidized bed combustion (CFBC) fly ash on properties of modified high volume low calcium fly ash (HVFA) cement paste
Abstract
The high-volume low calcium fly ash (HVFA) cement has been successfully applied to the roller compacted concrete, highway base material, and other structural constructions. The HVFA cement based high performance concretes have high workability, acceptable strengths, and superior durability. However, the issues of increase in setting time and decrease in early compressive strength remain. The aim of this investigation is to use the circulating fluidized bed combustion (CFBC) fly ash to improve the mechanical properties, including the compressive strengths, dynamic Young’s modulus (Ed), and dynamic shear modulus (Gd) of the HVFA cement pastes at early ages. The properties of HVFA cement pastes prepared by ordinary Portland cement (OPC) that was partially replaced by Class F fly ash (FFA) with and without sulfate activators (i.e., gypsum or CFBC fly ash) by 50% in weight were explored. The microstructures and the hydration products of the modified HVFA cement pastes were used to explain the improved compressive strengths and dynamic moduli of the specimens. Experimental results showed that the mixture with sulfate activators (i.e., the CFBC fly ash or gypsum) containing 0.81–1.62% SO3 can significantly improve the mechanical properties of the modified HVFA cement pastes at early ages due to more compacted microstructures. The accelerated hydration of tricalcium silicate (C3S) and more precipitated ettringite (AFt) formation of hardened pastes clearly confirm the important role of CFBC fly ash to enhance the mechanical properties of the modified HVFA cement pastes.