| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Michel, Frédéric
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2021Use of grinded hardened cement pastes as mineral addition in mortarscitations
- 2021Substitution of limestone filler by waste brick powder in self-compacting mortar: properties and durabilitycitations
- 2021Intra-granular porosity of grinded hardened cement paste and bricks: modeling and experimentation.citations
- 2020Influence of Activators on Mechanical Properties of Modified Fly Ash Based Geopolymer Mortarscitations
- 2019Optimizing performances of recycled aggregates for improving concrete properties
- 2018Hygro-themal and durability properties of a lightweight mortar made with foamed plastic waste aggregatescitations
- 2018Compatibility of superplasticizers with fly ash and limestone fillers ternary blended cements
- 2018State of the art on recycling techniques for the production of recycled sands and aggregates from construction and demolition wastes
- 2016SHAPE ANALYSIS OF FINE AGGREGATES USED FOR CONCRETE ; Analyse morphologique d'agrégats fins utilisés dans le bétoncitations
- 2014Effects of limestone fillers on surface free energy and electrical conductivity of the interstitial solution of cement mixescitations
- 2013Influence of particle shape on size distribution measurements by 3D and 2D image analyses and laser diffractioncitations
- 2012Durability of mortar and concretes containing slag with low hydraulic activitycitations
- 2012Effet de l'empilement et de la forme des additions dans les propriétés des liants à matrice cimentaire
- 2011Influence of clay in limestone fillers for self compacting cement based compositescitations
- 2011The evaluation of the surface free energy of liquids and solids in concrete technologycitations
- 2011Mineralization of bio-based materials: effect on cement-based mix properties
- 2009Surfology: concrete substrate evaluation prior to repair
- 2007Influence of physico-chemical characteristics of limestone fillers on fresch and hardened mortar performances
- 2005Some effects of limestone fillers as a partial substitute for cement in mortar composition
Places of action
| Organizations | Location | People |
|---|
article
Influence of Activators on Mechanical Properties of Modified Fly Ash Based Geopolymer Mortars
Abstract
The aim of this work was to study the influence of the type of activator on the formulation of modified fly ash based geopolymer mortars. Geopolymer and alkali-activated materials (AAM) were made from fly ashes derived from coal and biomass combustion in thermal power plants. Basic activators (NaOH, CaO, and Na2SiO3) were mixed with fly ashes in order to develop binding properties other than those resulting from the use of Portland cement. The results showed that the mortars with 5 mol/dm3 of NaOH and 100 g of Na2SiO3 (N5-S22) gave a greater compressive strength than other mixes. The compressive strengths of analyzed fly ash mortars with activators N5-S22 and N5-C10 (5 mol/dm3 NaOH and 10% CaO) varied from 14.3 MPa to 5.9 MPa. The better properties of alkali-activated mortars with regular fly ash were influenced by a larger amount of amorphous silica and alumina phases. Scanning electron microscopy and calorimetry analysis provided a better understanding of the observed mechanisms.