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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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Figueiredo, Stefan Chaves
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2022Design and analyses of printable strain hardening cementitious composites with optimized particle size distributioncitations
- 2021Freeze-thaw resistance and air-void analysis of concrete with recycled glass-pozzolan using X-ray micro-tomographycitations
- 2021Chloride Ion Penetration into Cracked UHPFRC During Wetting-drying Cyclescitations
- 2021Assessment of freeze-thaw resistance of cement based concrete with ground glass – pozzolan through X-ray microtomography
- 2020Improving printability of limestone-calcined clay-based cementitious materials by using viscosity-modifying admixturecitations
- 2020Mechanical Behavior of Printed Strain Hardening Cementitious Compositescitations
- 2020Fundamental investigation on the frost resistance of mortar with microencapsulated phase change materialscitations
- 20193D Concrete Printing for Structural Applications
- 2019On The Role Of Soft Inclusions On The Fracture Behaviour Of Cement Pastecitations
- 2019Effect of viscosity modifier admixture on Portland cement paste hydration and microstructurecitations
- 2019Limestone and Calcined Clay-Based Sustainable Cementitious Materials for 3D Concrete Printingcitations
- 2019Frost Damage Progression Studied Through X-Ray tomography In Mortar With Phase Change Materials
- 2019The Effect of Viscosity-Modifying Admixture on the Extrudability of Limestone and Calcined Clay-Based Cementitious Material for Extrusion-Based 3D Concrete Printingcitations
- 2019An approach to develop printable strain hardening cementitious compositescitations
- 2019Numerical investigation of crack self-sealing in cement-based composites with superabsorbent polymerscitations
- 2018Mechanical properties of ductile cementitious composites incorporating microencapsulated phase change materialscitations
- 2018Piezoresistive properties of cementitious composites reinforced by PVA fibrescitations
- 2018Durability of fibre reinforced cementitious composites
- 2018Modelling strategies for the study of crack self-sealing in mortar with superabsorbent polymers
- 2017Development of ductile cementitious composites incorporating microencapsulated phase change materialscitations
- 2017Experimentally validated multi-scale modelling scheme of deformation and fracture of cement pastecitations
- 2016Induction healing of concrete reinforced by bitumen-coated steel fibrescitations
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article
Freeze-thaw resistance and air-void analysis of concrete with recycled glass-pozzolan using X-ray micro-tomography
Abstract
<p>Recent studies have shown promising potential for using Glass Pozzolan (GP) as an alternative supplementary cementitious material (SCM) due to the scarcity of fly ash and slag in the United States. However, comprehensive studies on the freeze-thaw (FT) resistance and air void system of mixtures containing GP are lacking. Therefore, this study aimed to evaluate GP’s effect on FT resistance and characterize mixtures with different GP contents, both macro- and microscopically. In this study, six concrete mixes were considered: Three mixes with 20%, 30% and 40% GP as cement replacements and two other comparable mixes with 30% fly ash and 40% slag, as well as a mix with 100% Ordinary Portland cement (OPC) as a reference. Concrete samples were prepared, cured and tested according to the ASTM standards for accelerated FT resistance for 1000 cycles and corresponding dynamic modulus of elasticity (Ed). All the samples showed minimal deterioration and scaling and high F/T resistance with a durability factor of over 90%. The relationships among FT resistance parameters, air-pressured method measurements of fresh concretes and air void analysis parameters of hardened concretes were examined in this study. X-ray micro-tomography (micro-CT scan) was used to evaluate micro-cracks development after 1000 freeze-thaw cycles and to determine spatial parameters of air voids in the concretes. Pore structure properties obtained from mercury intrusion porosimetry (MIP) and N2 adsorption method showed refined pore structure for higher cement replacement with GP, indicating more gel formation (C-S-H) which was verified by thermogravimetric analysis (TGA).</p>