| 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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Jones, Prof M. R.
University of Dundee
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2023Fairly and Rapidly Assessing Low Carbon Concrete Made with Slowly Reacting Cements
- 2022Fungal colonization and biomineralization for bioprotection of concretecitations
- 2018Mechanical performance of statically loaded flat face epoxy bonded concrete jointscitations
- 2017High-volume, ultra-low-density fly ash foamed concretecitations
- 2017Coal fly ash as a pozzolancitations
- 2017Chloride ingress in a belite-calcium sulfoaluminate cement matrixcitations
- 2016A thermoanalytical, X-ray diffraction and petrographic approach to the forensic assessment of fire affected concrete in the United Arab Emiratescitations
- 2016Bubble Structure, Stability and Rheology of Foamed Concrete
- 2013Characterization and simulation of microstructure and thermal properties of foamed concretecitations
- 2013Evaluating Test Methods for Rapidly Assessing Fly Ash Reactivity for Use in Concrete
- 2012Effectiveness of the traditional parameters for specifying carbonation resistancecitations
- 2012Reducing the Variability of Predicting the Longevity of Reinforced Concrete Marine Structures Subjected to Physical and Chemical Degradation
- 2011Fly Ash Route to Low Embodied CO2 and Implications for Concrete Construction
- 2010Mechanisms of sulfate heave prevention in lime stabilized clays through pozzolanic additionscitations
- 2009Exposure of Portland cement to multiple trace metal loadingscitations
- 2009Experiences of Processing Fly Ashes Recovered from United Kingdom Stockpiles and Lagoons, their Characteristics and Potential End Uses
- 2008Sensitivity of electrode contact solutions and contact pressure in assessing electrical resistivity of concretecitations
- 2007Utilising Class F Fly Ash to Offset Non-ideal Aggregate Characteristics for Concrete in Chloride Environments
- 2006Characteristics of the ultrafine component of fly ashcitations
- 2005Comparative Performance of Beneficiated Run-of-Station Fly Ash as Cement
- 2005Preliminary views on the potential of foamed concrete as a structural materialcitations
- 2004Comparative performance of chloride attenuating and corrosion inhibiting systems for reinforced concretecitations
- 2003Studies using 27Al MAS NMR of AFm and AFt phases and the formation of Friedel's saltcitations
- 2003Moving Fly Ash Utilisation in Concrete Forward
- 2003Alkali activation of PFA
- 2002A mix constituent proportioning method for concrete containing ternary combinations of cements
- 2002Potential of Foamed Concrete to Enhance the Thermal Performance of Low-Rise Dwellings
- 2001Specifying concrete for chloride environments using controlled permeability formworkcitations
- 2000Aluminum-27 solid state NMR spectroscopic studies of chloride binding in Portland cement and blendscitations
Places of action
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document
Comparative Performance of Beneficiated Run-of-Station Fly Ash as Cement
Abstract
In the drive towards ever cleaner coal-fired power stations, producers in many countries have modified furnace conditions.Although this is both laudable and necessary, given government regulations, these changes generally affect negatively the quality of fly ash (FA) produced (usually termed as run-of-station ash).In particular, particle size is coarsened and/or residual carbon content increased.These impact significantly on the water reducing ability and reactivity of FA and, in extreme cases, the ash cannot be used as a cement component.Given that this is the premium use for the material, a number of beneficiation methods have been developed and are being adopted by an increasing number of producers to enhance ash quality and ensure outlet to the cement market, with the concomitant economic benefits.Whilst there has been a significant amount of research and development work on processing techniques themselves and the characteristics of the ash obtained, there is limited data on the comparative performance of these materials in cementitious mixes.<br/><br/>This paper considers a range of methods to control the physical and/or chemical characteristics of FA and the effect of these on the performance of processed FA in cementitious mortars.Three types of FA processing have been investigated, namely (i) air-cyclone classification, (ii) thermal treatment at 600°C and 900°C and (iii) mechanical grinding.Comparative performance has been measured using mortars with FA contents of 15%, 30% and 45% by mass of cement.The main focus of the study reported will be on particle packing density of Portland cement/FA mixes and the key fresh, hardened and durability properties.Data will be presented on mortar workability, compressive strength development, initial surface absorption, porosity and chloride ingress and it will be demonstrated that, although all are beneficial, there are significant differences in performance of FA produced by the different processing methods.It is hoped that the paper will encourage further consideration of run-of-station beneficiation methods to increase the utilisation of this advantageous material in premium cementitious applications.<br/>