| 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 |
|
Calabria-Holley, Juliana
University of Bath
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2024Improving the pozzolanic reactivity of clay, marl and obsidian through mechanochemical or thermal activationcitations
- 2022The impact of mechanochemical activation on the physicochemical properties and pozzolanic reactivity of kaolinite, muscovite and montmorillonitecitations
- 2021Investigation of the variability in the components of natural plant fibres subjected to hornification cycles
- 2019Resilient hemp shiv aggregates with engineered hygroscopic properties for the building industrycitations
- 2019Resilient hemp shiv aggregates with engineered hygroscopic properties for the building industrycitations
- 2019Autogenous self-healing of fibre cements
- 2019Development of novel building composites based on hemp and multi-functional silica matrixcitations
- 2019Development of novel building composites based on hemp and multi-functional silica matrixcitations
- 2019ICE Themes Low Carbon Concrete
- 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
- 2018Modification of hemp shiv properties using water-repellent sol–gel coatingscitations
- 2018Modification of Hemp Shiv Properties using Water-repellent Sol-gel Coatingscitations
- 2016The effects of sol-gel silicates on hydration kinetics and microstructure of Portland cement systems
- 2015Effects of nanosilica on the calcium silicate hydrates in Portland cement–fly ash systemscitations
- 2015Effect of nanolimestone particles on hydration and flexural strength of Portland limestone cement pastes
- 2015Sol-Gel Technology as a Seeding Agent for Portland Cement Systems
- 2015A comprehensive review of the models on the nanostructure of calcium silicate hydratescitations
- 2014The effect of the addition of nanoparticles of silica on the strength and microstructure of blended Portland cement pastes
- 2014Прочность и микроструктура цементного камня c добавками коллоидного SiO2
Places of action
| Organizations | Location | People |
|---|
document
Effect of recycled geopolymer concrete aggregate on strength development and consistence of Portland cement concretes
Abstract
Numerous studies have shown that production of geopolymer cement concretes can have lower carbon emissions compared to Portland cement concretes. However, for a full lifecycle assessment of environmental impacts, scenarios for the end of structures’ design life of must be considered, including reuse options. The work presented here is part of a wider study investigating the recyclability of fly ash-slag geopolymer cement (GC) concrete as an aggregate in Portland cement (PC) concretes. <br/>Three types of GC concretes with varying Na2O % per mass of precursor and SiO2/Na2O molar ratio were produced in the laboratory. All other mix design parameters were kept constant. The concretes were investigated thoroughly through physical and mechanical testing and chemical characterization at various ages and then crushed mechanically to form recycled geopolymer concrete aggregates (RGCA). <br/>Two series of PC concretes with 20% aggregate replacement by RGCA were produced – one of S1 consistence class and one of S3 consistence class (design slumps of 10-40mm and 100-150mm). The effect of RGCA on PC concrete fresh properties was investigated. The compressive strength development was assessed by testing at 7, 28 and 90 days. All results were evaluated against concretes with recycled Portland cement concrete aggregates (RCA) and natural limestone aggregates. These results were paired with calorimetric studies of pastes produced with recycled concrete aggregate leachate. <br/>Although mix designs were adapted according to water absorption requirements, the consistence of concretes appeared to be largely dependent on the type of aggregate. The results showed that strength trends remained unaltered between the two concrete series and were mostly influenced by the aggregate type. Mixes with RGCA presented overall higher strengths than the RCA and limestone aggregate concretes. Tests at 90 days showed a continuous increase of compressive strength, while the trends between the concretes remained unaltered. Overall, this study has shown that RGCA affect new concretes in a different way to RCA. However, none of the factors investigated here should prevent the use of RGCA in new concretes.<br/>