| People | Locations | Statistics |
|---|---|---|
| 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
Bubble Structure, Stability and Rheology of Foamed Concrete
Abstract
Foamed concrete has been identified as a versatile construction material with excellent properties that include being highly flowable, light, and durable, which are mainly own to its large volume of spherical bubbles. However, improper bubble structure in foamed concrete could result in stability problem unexpectedly on-site during its application and cause it to collapse. In this study, the bubble structure of foamed concrete was examined to establish links with its stability and rheology properties. Mixes with plastic densities ranging from 300 to 1400 kg/m³ were produced with CEM I, CSA and fine fly ash cement combinations. Water/cement (w/c) ratios varied from 0.4 to 0.8 and two types of surfactant were used. The bubble size of foamed concrete was found to be a function of its density, w/c ratio, the material fineness and surfactant types. The bubble diameters were shown to range between 0.1 to 0.5 mm. The stability was improved with increase in density. Reducing w/c ratio and fineness of constituent materials was also beneficial. The hardening time had a significant effect for stability of low density mixes and stable mixes with 300 kg/m³ density were achieved by using cement combinations of CSA with CEM I R or CSA with fine fly ash. A relationship was also established between bubble structures and the rheological values. Bubble sizes reduced when the yield stress increased. Changing the densities exhibited significant variance in the rheological values due to the changes in total bubble content. Altering the w/c ratio also had a considerable variation in the rheological values due to the changes in consistence of base mixes.