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| Naji, M. |
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| Motta, Antonella |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Kočí, Jan | Prague |
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| Ali, M. A. |
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| Rančić, M. |
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| Azevedo, Nuno Monteiro |
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Chaliasou, Napoleana Anna
Aecom (United Kingdom)
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2018Effect of recycled geopolymer concrete aggregate on strength development and consistence of Portland cement concretes
- 2018Concretes incorporating recycled geopolymer aggregate - Implications and properties correlations
- 2018Chemical aspects related to using recycled geopolymers as aggregatescitations
- 2016Investigation of the Recycling of Geopolymer Cement wastes as Fine Aggregates in Mortar Mixes
- 2016Chemical aspects related to using recycled geopolymers as an aggregate
- 2016Recycling of fly ash-slag Geopolymer binder in mortar mixes
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document
Chemical aspects related to using recycled geopolymers as an aggregate
Abstract
Geopolymer cements are alternative binders for concrete with low CO2 footprint and distinct chemical composition. They consist of aluminosilicate macromolecules and have a highly alkaline matrix due to the activating solutions used for their production. This paper is based on a study examining the recyclability of fly ash-slag based geopolymer paste as fine recycled concrete aggregate (RCA) in Portland cement and geopolymer mortars. Given the intrinsic structure of geopolymers, leaching of chemical substances from the RCA into the new paste was considered possible. SEM images and elemental mapping of the hardened mortars were used to evaluate the effect of RA. The potential of alkali silica reaction occurrence and the effect of RA extract on the initial setting time of cement were examined.<br/>