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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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Barnett, Stephanie Jayne
University of Portsmouth
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Life cycle assessment of steel fibre-reinforced concrete beamscitations
- 2019Behaviour of hybrid steel fibre reinforced self compacting concrete using innovative hooked-end steel fibres under tensile stresscitations
- 2017Effects of steel fibre-aggregate interaction on mechanical behaviour of steel fibre reinforced concretecitations
- 2016Investigating geometrical size effect on the flexural strength of the ultra high performance fibre reinforced concrete using the cohesive crack modelcitations
- 2016Distribution and orientation of steel fibres in steel fibre reinforced concrete
- 2016Factors influencing the compressive strength of fly ash based geopolymerscitations
- 2014Modelling behaviour of ultra high performance fibre reinforced concretecitations
- 2014Numerical simulation of ultra high performance fibre reinforced concrete panels subjected to blast loadingcitations
- 2013Maturity testing of lightweight self-compacting and vibrated concretescitations
- 2011Study of fibre orientation and distribution in UHPFRC by electrical resistivity and mechanical tests
- 2010Assessment of fibre orientation in ultra high performance fibre reinforced concrete and its effect on flexural strengthcitations
- 2008The effect of temperature on the rate of strength development of slag cement
- 2007Fast-track construction with slag cement concrete: adiabatic strength development and strength prediction
- 2007UHPFRC - Optimisation of mix proportions
- 2006Strength development of mortars containing ground granulated blast-furnace slag: effect of curing temperature and determination of apparent activation energiescitations
- 2003Extent of immiscibility in the ettringite-thaumasite systemcitations
- 2002Study of thaumasite and ettringite phases formed in sulfate/blast furnace slag slurries using XRD full pattern fittingcitations
- 2001An XRPD profile fitting investigation of the solid solution between ettringite, Ca6Al2(SO4)3(OH)12.26H2O, and carbonate ettringite, Ca6Al2(CO3)3(OH)12.26H2Ocitations
- 2000Solid solutions between ettringite, Ca6Al2(SO4)3(OH)12.26H2O, and thaumasite, Ca3SiSO4CO3(OH)6.12H2Ocitations
Places of action
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article
Study of thaumasite and ettringite phases formed in sulfate/blast furnace slag slurries using XRD full pattern fitting
Abstract
The thaumasite form of sulfate attack (TSA) has been investigated using a method known to accelerate the formation of the sulfate minerals thaumasite, ettringite and gypsum. Mixes containing different cements and aggregates in magnesium sulfate solution were prepared at different water:solid ratios. The work concentrated, in particular, on the role of blast furnace slag as a cementitious material in preventing the formation of thaumasite. The formation of sulfate minerals in the mixes was followed for a period of two years by X-ray powder diffraction. Full pattern fitting, a computer-based XRD data analysis technique, was used to identify the nature of the thaumasite/ettringite solid solutions produced. Thaumasite was formed only in mixes containing carbonate-bearing aggregates at higher water:solid ratios. In most of the mixtures containing blast furnace slag cement (70% blast furnace slag cement, 30% Portland cement), an ettringite-based solid solution was the main sulfate-bearing phase produced. Only one of the mixes containing blast furnace slag cement was found to produce thaumasite. Some samples, containing only blast furnace slag as the cementitious component, produced gypsum and no thaumasite/ettringite. The variation in the exact nature of thaumasite/ettringite produced with different aggregates, cements and water:solid ratios is discussed. (C) 2002 Elsevier Science Ltd. All rights reserved.