| 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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Vallazza-Grengg, Cyrill
Graz University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Alkali activated steel slag – oil compositescitations
- 2023Mineral Residues and By-Products Upcycled into Reactive Binder Components for Cementitious Materialscitations
- 2023New Insights into the Carbonation Process of Mortars and Concretescitations
- 2023Concrete corrosion analysis using optical chemical sensors and imaging
- 2023Corrosion Resistance of Calcium Aluminate Cements in Sewer Environmentscitations
- 2023Application of electron beam welding technique for joining coarse-grained and ultrafine-grained plates from Al-Mg-Si alloycitations
- 2023Optical sensors for the durability assessment of cement-based infrastructure
- 2023Impact of humidity and vegetable oil addition on mechanical properties and porosity of geopolymerscitations
- 2023Concrete Corrosion Characterization Using Advanced Microscopic and Spectroscopic Techniques
- 2022Report of RILEM TC 281-CCCcitations
- 2022Acid resistance of alkali-activated materials: recent advances and research needscitations
- 2022In situ pH monitoring in accelerated cement pastescitations
- 2021Material Characterization of Geopolymer Mortar for its beneficial Use in Composite Constructioncitations
- 2021Continuous optical in-situ pH monitoring during early hydration of cementitious materialscitations
- 2021Cu- and Zn-doped alkali activated mortar – Properties and durability in (bio)chemically aggressive wastewater environmentscitations
- 2021Material Characterization of Geopolymer Concrete for Its Beneficial Use in Composite Construction
- 2021Durability of clinker reduced shotcrete: Ca2+ leaching, sintering, carbonation & chloride penetrationcitations
- 2020Long-term in situ performance of geopolymer, calcium aluminate and Portland cement-based materials exposed to microbially induced acid corrosioncitations
- 2019High-resolution optical pH imaging of concrete exposed to chemically corrosive environmentscitations
- 2018Advances in concrete materials for sewer systems affected by microbial induced concrete corrosioncitations
- 2018Microbial induced acid corrosion from a field perspective-Advances in process understanding and construction material developmentcitations
- 2018Wide-range optical pH imaging of cementitious materials exposed to chemically corrosive environmentscitations
- 2018OPTICAL PH IMAGING OF CONCRETE EXPOSED TO CHEMICALLY CORROSIVE ENVIRONMENTS
- 2018MICROBIAL INDUCED ACID CORROSION FROM A FIELD PERSPECTIVE – ADVANCES IN PROCESS UNDERSTANDING AND CONSTRUCTION MATERIAL DEVELOPMENT
- 2017The decisive role of acidophilic bacteria in concrete sewer networkscitations
- 2016Concrete corrosion in an Austrian sewer system
Places of action
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article
Long-term in situ performance of geopolymer, calcium aluminate and Portland cement-based materials exposed to microbially induced acid corrosion
Abstract
<p>This contribution presents an extensive performance evaluation of metakaolin-based geopolymer and calcium aluminate mortars during a long-term field exposure to a wastewater system exhibiting intensive microbially induced acid corrosion (MIAC) conditions. Results were compared to a high-performance OPC concrete, typically used for manhole fabrication. Field conditions were obtained by monitoring relative humidity, temperature, H<sub>2</sub>S and CO<sub>2</sub>. Microstructural degradation and elemental distributions within each binder type over time were recorded by electron probe microanalysis, X-ray diffraction and pH-imaging techniques, together with specimen's mass and surface-pH characterization. Microbiome and epifluorescence analyses indicated exposure-time dependent alternating bacterial community structures within the materials. Clear differences regarding bacterial species distribution and biodiversity were observed for the different binder types. Estimated corrosion rates were the lowest (1.4 mm/a) and the highest (13.3 mm/a) for the tested geopolymer formulations, pointing out that only well designed geopolymer materials may provide an improved MIAC resistance.</p>