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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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Henriques, Fernando Manuel Anjos
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2020Effects of polypropylene fibers and measurement methods on the yield stress of grouts for the consolidation of heritage masonry wallscitations
- 2020Yield Stress in Injection Grouts for Strengthening of Stone Masonry Wallscitations
- 2019Experimental assessment of geopolymer grouts for stone masonry strengtheningcitations
- 2017Experimental characterization of injection grouts incorporating hydrophobic silica fumecitations
- 2015Experimental study and modeling of rheological and mechanical properties of NHL groutscitations
- 2012Optimisation of flow behaviour and stability of superplasticized fresh hydraulic lime grouts through design of experimentscitations
- 2007Development of biocolonization resistant mortarscitations
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article
Effects of polypropylene fibers and measurement methods on the yield stress of grouts for the consolidation of heritage masonry walls
Abstract
FeDeR funds through the COMPeTe 2020 Programme under the project number POCI-01-0145-FeDeR-007688. ; The injection of grouts is a consolidation technique suitable for overcoming the structural deterioration of old stone masonry walls. Grouting operations involve introducing a suspension (grout) into a masonry core with the aim of improving the load capacity of the wall, as well as reducing its brittle mechanisms. The yield stress of injection grouts will affect the injection pressure and their flow inside the masonry. However, the determination of some rheological properties such as yield stress in hydraulic grout is challenging, due to the combined effects of hydration reactions and interactions between the particles present in the suspension. In this study, the determination of the yield stress of natural hydraulic lime-based grouts with polypropylene fibers was carried out. The changes in yield stress with time, fibers content and hydration were evaluated by two measurement methods using a rotational rheometer. Additionally, the static and dynamic yield stress as well as the critical shear-strain rate were determined, which provided useful information on the grout design in order to achieve successful grouting operations. ; publishersversion ; published