| 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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Cundy, Andy
University of Southampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2020Novel nanostructured iron oxide cryogels for arsenic (As(III)) removalcitations
- 2019A cryogel-based bioreactor for water treatment applicationscitations
- 2019Flexural performance of reinforced concrete beams strengthened with fibre reinforced geopolymer concrete under accelerated corrosioncitations
- 2018A novel corrosion resistant repair technique for existing reinforced concrete (RC) elements using polyvinyl alcohol fibre reinforced geopolymer concrete (PVAFRGC)citations
- 2017Steel fibre reinforced geopolymer concrete (SFRGC) with improved microstructure and enhanced fibre-matrix interfacial propertiescitations
- 2017Tensile properties of a novel fibre reinforced geopolymer composite with enhanced strain hardening characteristicscitations
- 2017Effect of undensified silica fume on the dispersion of carbon nanotubes within a cementitious compositecitations
- 2017Mechanical performance of novel cement-based composites prepared with nano-fibres, and hybrid nano- and micro-fibrescitations
- 2016Development of geopolymer mortar under ambient temperature for in situ applicationscitations
- 2014y-Al2O3-based nanocomposite adsorbents for arsenic(V) removal: Assessing performance, toxicity and particle leakagecitations
- 2012Driving forces of conformational changes in single-layer graphene oxidecitations
- 2011High efficiency removal of dissolved As(III) using iron nanoparticle-embedded macroporous polymer compositescitations
- 2005Electrokinetic iron pan generation in unconsolidated sediments: implications for contaminated land remediation and soil engineeringcitations
Places of action
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article
Development of geopolymer mortar under ambient temperature for in situ applications
Abstract
Geopolymer concrete technology involves production of more environmentally friendly waste material-based concrete which could be a viable solution for conventional concrete replacement. Typical fly ash-based geopolymer concrete however requires high temperature curing treatment in order to develop sufficient early strength properties, which is considered a severe limitation for cast-in-place concrete applications. Most previous studies on geopolymer concrete have focused on the properties of concretes pre-hardened by heat curing and/or by aggressive chemical treatment (e.g. alkali activation using concentrated sodium hydroxide (NaOH)). The current study presents an extensive experimental investigation on the mechanical and microstructural properties of geopolymer concrete mixes prepared with a combination of fly ash and slag cured under ambient temperature. ‘User friendly’ geopolymer mixes were produced using fly ash (FA) and Ground Granulated Blast furnace Slag (GGBS) mixed together with potassium silicate with molar ratio equal to 1.2 (as the activator) and water. The results indicated that heat curing treatment can be avoided by partial replacement of fly ash with slag. The compressive strength of the examined mixes was found to be in the range of 40–50 MPa for 40% and 50% GGBS replacement mixtures respectively. Moreover, the flexural and direct tensile strengths of geopolymer mixes are considerably improved as the GGBS content is increased. Based on FTIR and SEM/EDS analysis, the inclusion of a higher content of GGBS resulted in a denser structure by formation of more hydration products.