| 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
Fairly and Rapidly Assessing Low Carbon Concrete Made with Slowly Reacting Cements
Abstract
The CIIIA+SR combination in BS 8500-1 accounts for around 40% of UK ready-mixed concrete production and will normally consist of 50%-55% GGBS. The slower setting times and strength gain, especially at lower ambient temperatures, can cause issues with finishing due to extended bleed and programming due to extended stripping times. Contractors have become accustomed to these challenges, however the performance of the lower clinker cements in EN 197-5 will present an even bigger challenge compared to their binary equivalents. Low carbon alternatives typically require anywhere between 90 and 180 days of standard water curing to reach equivalent standard 28-day concrete maturity. Whilst this has significant implications for programming of construction work, it is also difficult to make material performance comparisons within timescales suitable for clients and designers to make decisions on material specification.<br/>A range of cement type combinations were cast using typical w/c ratio used for structural and non structural concrete (0.4, 0.5 and 0.6 w/c). Elevated temperature curing regime (at 50°C) was investigated by means of comparative performance against standard water cured samples. Analysis involved comparison of compressive strength development to establish strength-based equivalent maturity. MIP and SEM were done to investigate both porosity and physical microstructure of test specimens.<br/>Compressive strength equivalency was used as a proxy for equivalent degree of maturity of investigated concrete compositions. The research shows that 21-day elevated temperature cured samples are very similar to 90-day standard cured specimens in terms of both compressive strength and internal physical microstructure. The similarities diverge with increasing water-cement ratio with little compressive strength equivalency for concretes cast at 0.6 w/c. However, the microstructure remains similar suggesting equal degree of maturity for both elevated and standard cured samples of corresponding cement type concretes for all investigated water-cement ratios.<br/>