| 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
Utilising Class F Fly Ash to Offset Non-ideal Aggregate Characteristics for Concrete in Chloride Environments
Abstract
Sources of primary aggregate resources are under increasing pressure as construction activity continues to consume very large quantities world-wide.Equally quarry and gravel extraction is not popular with the public at-large and planning authorities are increasingly reluctant to give permission for new quarries.As a consequence, concrete producers are increasingly looking to use aggregates that may be regarded as having non-ideal characteristics, such as a high porosity, whether from natural sources or recycled.<br/><br/>Of the exposure conditions to which reinforced concrete is subjected, arguably the chloride environment is the most severe.Generally the ingress of chlorides is dominated by the paste phase and thus can be controlled by selection of cement type, content and/or water/cement ratio.Historically, therefore, engineers have utilized dense, low porosity aggregates and as a result the properties of aggregate per se are not usually specified.Recent work, however, suggests that aggregate interconnected porosity can have a significant influence on the rate of chloride ingress and ultimately the intensity of reinforcement corrosion resulting.<br/><br/>The use of fly ash in concrete is universally accepted as enhancing resistance to chlorides.Based on this, the premise of the research described in this paper was to determine whether fly ash could be used to allow the effective and economic use of aggregates with non-ideal properties for reinforced concrete in chloride exposures.<br/><br/>Aggregates with a wide range of properties were considered and their effect on the concrete microstructure and its ability to resist chloride diffusion in the cover zone and reinforcement corrosion, tested.It was found that Class F fly ash can indeed be used in this manner and, furthermore, the rate of reinforcement corrosion is also reduced.The paper explores the practical implications of the results.<br/>