| People | Locations | Statistics |
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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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Borisov, Sergey
Graz University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024Transition metal azahemiporphycenes as singlet oxygen sensitizerscitations
- 2023Bright and Photostable TADF-Emitting Zirconium(IV) Pyridinedipyrrolide Complexes: Efficient Dyes for Decay Time-Based Temperature Sensing and Imagingcitations
- 2022Materials for optical oxygen sensing under high hydrostatic pressurecitations
- 2022Porous matrix materials in optical sensing of gaseous oxygencitations
- 2019High-resolution optical pH imaging of concrete exposed to chemically corrosive environmentscitations
- 2018Wide-range optical pH imaging of cementitious materials exposed to chemically corrosive environmentscitations
- 2018Mn4+-Doped magnesium titanate-a promising phosphor for self-referenced optical temperature sensingcitations
- 2018OPTICAL PH IMAGING OF CONCRETE EXPOSED TO CHEMICALLY CORROSIVE ENVIRONMENTS
- 2018Macroporous Polymeric Oxygen Scavenger Material
- 2018New opportunities for optical temperature sensing with Mn<sup>4+</sup>-doped magnesium titanate
- 2013Tuning the dynamic range and sensitivity of optical oxygen-sensors by employing differently substituted polystyrene-derivativescitations
Places of action
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document
OPTICAL PH IMAGING OF CONCRETE EXPOSED TO CHEMICALLY CORROSIVE ENVIRONMENTS
Abstract
Major types of chemical concrete degradation such as carbonation, leaching and acid attacks are strongly associated with decreasing internal or external pH. Thus a precise determination of the latter is crucial for the assessment regarding the degree of corrosion and corresponding development of prevention strategies. Conventional pH measure methods for concrete, such as phenolphthalein indicator, pore solution extractions and flat surface electrodes have proven to contain significant limitations and inadequacies. This contribution presents the application of sensor foils based on luminescent pH sensitive dyes entrapped in a polymeric hydrogel matrix, to quantify and image the distribution of surface pH of concrete based construction materials.An imaging technique called time-domain dual lifetime referencing (t-DLR) was used, which suppresses artifacts from scattering of the background and other light inhomogeneities. Using this methodology high-resolution pH profiles of concrete samples exposed to carbonation and biogenic acid corrosion were recorded.