| 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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Mccarthy, Michael John
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Mechanical processing of wet stored fly ash for use as a cement component in concrete
- 2022Impact of fly ash production and sourcing changes on chemical and physical aspects of concrete durabilitycitations
- 2022Influence of wet storage on fly ash reactivity and processing for use in concretecitations
- 2021Potential of Weathered Blast Furnace Slag for use as an Addition in Concretecitations
- 2019Pozzolanas and pozzolanic materialscitations
- 2017Evaluation of Fly Ash Reactivity Potential Using a Lime Consumption Testcitations
- 2015Influence of Portland cement characteristics on air-entrainment in fly ash concretecitations
- 2013Evaluating Test Methods for Rapidly Assessing Fly Ash Reactivity for Use in Concrete
- 2011Fly Ash Route to Low Embodied CO2 and Implications for Concrete Construction
- 2010Mechanisms of sulfate heave prevention in lime stabilized clays through pozzolanic additionscitations
- 2009Experiences of Processing Fly Ashes Recovered from United Kingdom Stockpiles and Lagoons, their Characteristics and Potential End Uses
- 2007Utilising Class F Fly Ash to Offset Non-ideal Aggregate Characteristics for Concrete in Chloride Environments
- 2004Comparative performance of chloride attenuating and corrosion inhibiting systems for reinforced concretecitations
- 2003Moving Fly Ash Utilisation in Concrete Forward
- 2001Specifying concrete for chloride environments using controlled permeability formworkcitations
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/>