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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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Ye, Guang
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (42/42 displayed)
- 2023Future perspectives for alkali-activated materials: from existing standards to structural applicationscitations
- 2022Report of RILEM TC 267-TRM phase 3: validation of the R3 reactivity test across a wide range of materialscitations
- 2022Report of RILEM TC 267-TRM phase 3: validation of the R3 reactivity test across a wide range of materialscitations
- 2022The role of porosity on degradation of concrete under severe internal and external brine attack in confined conditionscitations
- 2022Report of RILEM TC 267-TRM phase 2: optimization and testing of the robustness of the R3 reactivity tests for supplementary cementitious materialscitations
- 2022Report of RILEM TC 267-TRM phase 2: optimization and testing of the robustness of the R3 reactivity tests for supplementary cementitious materialscitations
- 2020RILEM TC 247-DTA round robin testcitations
- 2020Effects of heat and pressure on hot-pressed geopolymercitations
- 2020Evaluating compressive mechanical LDPM parameters based on an upscaled multiscale approachcitations
- 2019Strain-Hardening Cementitious Composite (SHCC) For Durable Concrete Repair
- 2019RILEM TC 247-DTA round robin testcitations
- 2019RILEM TC 247-DTA round robin test: mix design and reproducibility of compressive strength of alkali-activated concretescitations
- 2019RILEM TC 247-DTA round robin test: mix design and reproducibility of compressive strength of alkali-activated concretescitations
- 2018Reactivity tests for supplementary cementitious materialscitations
- 2018Microstructure-based prediction of thermal properties of cement paste at early ages
- 2018CO2 binding capacity of alkali-activated fly ash and slag pastescitations
- 2018Reactivity tests for supplementary cementitious materials RILEM TC 267-TRM phase 1citations
- 2018Microstructure-based 3d modelling of diffusivity in sound and cracked cement paste
- 2018Effect of natural carbonation on the pore structure and elastic modulus of the alkali-activated fly ash and slag pastescitations
- 2018Reactivity tests for supplementary cementitious materials: RILEM TC 267-TRM phase 1citations
- 2018Development and application of an environmentally friendly ductile alkali-activated compositecitations
- 2017Moisture movement in cement-based repair systems monitored by X-ray absorption
- 2017Moisture movement in cement-based repair systems monitored by X-ray absorption
- 2017Failure modes in concrete repair systems due to ongoing corrosioncitations
- 2017Upscaling cement paste microstructure to obtain the fracture, shear, and elastic concrete mechanical LDPM parameterscitations
- 2017Failure Modes in Concrete Repair Systems due to Ongoing Corrosioncitations
- 2017Numerical benchmark campaign of cost action tu1404 – microstructural modellingcitations
- 2016Interactie beton en reparatiemiddel (1)
- 2016A 3D lattice modelling study of drying shrinkage damage in concrete repair systemscitations
- 2016Interactie beton en reparatiemiddel (2)
- 2015Evolution of microstructure and transport properties of cement pastes due to carbonation under a CO2 pressure gradient: a modeling approach
- 2015Using nano-indentation and microscopy to obtain mechanical properties
- 2014A modelling study of drying shrinkage damage in concrete repair systems
- 2014SHCC3: Strain Hardening Cementitious Composites
- 2014Damage induced by continued corrosion in concrete repair systems
- 2013Micromechanical study of the interface properties of concrete repair systems
- 2013Concrete in engineered barriers for radioactive waste disposal facilities: phenomenological study and assessment of long term performance
- 2012Hardening process of binder paste and microstructure developmentcitations
- 2010Modelling and predicting effects of deterioration mechanisms
- 2008X-ray computed microtomography on cementitious materials
- 2008Material properties of mortar specimens at early stage of hydration in the presence of polymeric nano-aggregates
- 2006Theoretical approach to calculate surface chloride content Cs of submerged concrete under sea water laden environment
Places of action
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article
Moisture movement in cement-based repair systems monitored by X-ray absorption
Abstract
In concrete repair systems, material properties in the repair material and interface are greatly influenced by the initial moisture content of the concrete (or mortar) substrate. In order to quantify moisture profiles inside the repair system, X-ray absorption was used. Preliminary studies are performed first to determine the absorption rate of a two-year-old mortar substrate. Cumulative water absorption and the penetration front of water are monitored as a function of time. Furthermore, absorption by the mortar substrate is investigated when a repair material is cast on top. Influence of water-to-cement ratio (w/c) of the repair material on water exchange, and moisture content change during drying in the repair system are studied. Ordinary Portland cement (OPC) paste was used as a repair material. It was shown that, initially, water from the repair material is absorbed by the substrate with the same speed as “free” water. Furthermore, not only can water be absorbed by the substrate, but it can also migrate back from the substrate to the repair material due to hydration of the repair material. Quantifying the dynamics of water exchange at an early stage between the repair material and the concrete substrate is a first step towards understanding the development of material and interface properties in repair systems. This can provide engineers with recommendations about substrate preconditioning in experiments and field practice.