| 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 |
|
García-Lodeiro, Inés
European Commission
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2023Evaluation of Fillers for Magnesium Potassium Phosphate Cement (MKPC) for the Encapsulation of Low and Intermediate Level Metallic Radioactive Wastescitations
- 2022Application of electric arc furnace slag as an alternative precursor to blast furnace slag in alkaline cements
- 2022Influence of Accelerating Admixtures on the Reactivity of Synthetic Aluminosilicate Glassescitations
- 2021Portland Versus Alkaline Cement: Continuity or Clean Break: “A Key Decision for Global Sustainability”citations
- 2020The importance of physical parameters for the penetration depth of impregnation products into cementitious materials: Modelling and experimental studycitations
- 2020TEOS modified with nano-calcium oxalate and PDMS to protect concrete based cultural heritage buildingscitations
- 2020Use of industrial by-products as alkaline cement activatorscitations
- 2020Producing C-S-H gel by reaction between silica oligomers and portlandite: A promising approach to repair cementitious materialscitations
- 2019Mechanical-chemical activation of coal fly ashes: An effective way for recycling and make cementitious materialscitations
- 2018Hybrid alkaline cements: Bentonite-Opc binderscitations
- 2014Alkaline activation of synthetic aluminosilicate glasscitations
- 2010Stability of Synthetic Calcium Silicate Hydrate Gels in Presence of Alkalis, Aluminum, and Soluble Silicacitations
Places of action
| Organizations | Location | People |
|---|
article
Influence of Accelerating Admixtures on the Reactivity of Synthetic Aluminosilicate Glasses
Abstract
This research aims at gaining a further understanding of the impact of accelerating admixtures on the reactivity of supplementary cementitious materials (SCMs), which are widely used as a clinker replacement in blended cements. This was done on synthetic glasses with controlled composition and structure that mimic two types of real SCMs (slag and calcium-rich fly ash). The effects of DEIPA, TIPA, NaSCN and Na2S2O3 on the glass dissolution, hydration kinetics and reaction products were investigated. The obtained results concluded that the pH of the NaOH solution and the composition of the synthetic glass play a key role on the effect of the admixtures. In 0.1 M NaOH (pH = 13.0), all the studied admixtures inhibited the dissolution of slag-like glasses while they enhanced the dissolution of Ca-rich fly ash-like glasses, being Na2S2O3 the admixture that led to the highest increase of the dissolution rate of the Ca-rich fly ash-type glasses. In 1 M NaOH solutions (pH = 13.8), only the alkali admixtures (NaSCN and Na2S2O3) enhanced the degree of reaction of both glasses. In slag-type glasses pastes mixed with 1 M NaOH, the addition of 2% Na2S2O3 induced the highest increase of their reactivity as inferred by the total heat release and the amount of bound water. This is related to the formation of a high amount of S(II)-AFm, in addition to C-A-S-H, that would increase the aluminium undersaturation of the pore solution and consequently the further dissolution of the glass. ; This research was funded by Consejería de Educación e Investigación (Comunidad de Madrid) for funding the 2016-T1/AMB-1434 project in the frame of “Ayudas de Atracción de Talento Investigador” and CSIC for funding the PIE 202160I023 project. ; Peer reviewed