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DTSTART;VALUE=DATE:20230905
DTEND;VALUE=DATE:20250906
DTSTAMP:20260423T123223
CREATED:20250811T101613Z
LAST-MODIFIED:20250811T101809Z
UID:31804-1693872000-1757116799@betongforeningen.se
SUMMARY:Disputation: Andreas Alhede – On the characterisation of steel corrosion and the resulting concrete damage using tomography
DESCRIPTION:Disputation på Chalmer tekniska högskola\nAndreas Alhede försvarar sin avhandling “On the characterisation of steel corrosion and the resulting concrete damage using tomography”\nLäs mer: https://research.chalmers.se/en/publication/547755 \nTid: 5 september 2025 kl 09.00 – 12.00\nPlats: SB-H6\, Sven Hultins gata 6\, Chalmers samt digitalt på Zoom)\nOpponent: Associate Professor Els Verstrynge\, Department of Civil Engineering\, KU Leuven\, Belgium
URL:https://betongforeningen.se/event/disputation-andreas-alhede-on-the-characterisation-of-steel-corrosion-and-the-resulting-concrete-damage-using-tomography/
LOCATION:Chalmers alt. Zoom\, Sven Hultins gata 6\, Göteborg
CATEGORIES:Disputationer och lic seminarier
ATTACH;FMTTYPE=image/jpeg:https://betongforeningen.se/wp-content/uploads/2020/08/doktorshatt-1-2.jpg
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BEGIN:VEVENT
DTSTART;TZID=Europe/Stockholm:20231023T103000
DTEND;TZID=Europe/Stockholm:20251023T133000
DTSTAMP:20260423T123223
CREATED:20251009T093828Z
LAST-MODIFIED:20251009T093828Z
UID:32168-1698057000-1761226200@betongforeningen.se
SUMMARY:Disputation: Marcin Sundin – Performance of Lower-Carbon Concretes After High-Temperature Exposure
DESCRIPTION:Disputation på LTU\, Byggmaterial\nMarcin Sundin presenterar sin avhandling ”Performance of Lower-Carbon Concretes After High-Temperature Exposure”\nLäs mer: https://www.ltu.se/aktuellt/kalender/event/2025-10-02-disputation-i-byggmaterial—marcin-sundin \nTid: 23 oktober 2025 kl 10.30\nPlats: Luleå Tekniska Universitet\, E632 \nOpponent: Jeanette Orlowski\, Professor\, TU Dortmund University\, Department of Building Materials\nOrdförande: Magdalena Rajczakowska\, postdoktor\, Luleå tekniska universitet\, institutionen för samhällsbyggnad och naturresurser.
URL:https://betongforeningen.se/event/disputation-marcin-sundin-performance-of-lower-carbon-concretes-after-high-temperature-exposure/
LOCATION:LTU\, Universitetsområdet\, Porsön\, Luleå
CATEGORIES:Disputationer och lic seminarier
ATTACH;FMTTYPE=image/jpeg:https://betongforeningen.se/wp-content/uploads/2020/08/doktorshatt-1-2.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Stockholm:20240506T100000
DTEND;TZID=Europe/Stockholm:20240506T130000
DTSTAMP:20260423T123223
CREATED:20240417T104741Z
LAST-MODIFIED:20240429T055915Z
UID:25774-1714989600-1715000400@betongforeningen.se
SUMMARY:Licentiatseminarium på Chalmers - 6 maj 2024
DESCRIPTION:Amrita Hazarika\, Byggnadsteknologi Chalmers\, presenterar sin licentiatavhandling ”Characterization\, Activation and Reactivity of Natural Pozzolans for Use as Supplementary Cementitious Materials” \nTid: 6 maj kl 10.00–13.00\nOpponent: är Prof. Andrzej Cwirzen\, Luleå University of Technology\nPlats: Rum 393\, SB 1\, Chalmers Tekniska högskola\, Institutionen Arkitektur och samhällsbyggnadsteknik\nSamt Zoom\, se länk https://www.chalmers.se/aktuellt/kalender/Amrita-Hazarika-540724/ \nSupplementary cementitious materials (SCMs) represent one of the most practicable ways to reduce the negative environmental impact of cement. Natural pozzolans like clays and volcanic materials (VMs) offer promising alternatives to industrial by-products such as blast furnace slags and fly ashes\, whose availability cannot meet the growing demand for SCMs globally. However\, comprehensive implementation of these pozzolans in the built sector\, raises unanswered questions. One key concern is understanding the activation requirements of pozzolans with diverse compositions\, which can impact their physicochemical properties and reactivity. In this context\, the present thesis investigates how commonly used activation methods affect particle size\, surface areas\, and chemical properties\, influencing the reactivity of multiple samples of heterogeneous clays and volcanic materials from the Nordic region\, differing in mineralogical characteristics. In the context of heterogeneous natural clays\, it is frequently noted that either traditional thermal activation (TA) or mechanochemical activation (MCA) can fully dehydroxylate minerals\, a process crucial for optimal clay reactivity. However\, findings from the current investigations highlight that combining these methods brings notable changes in key parameters. Notably\, integrating 20 mins of MCA at 500 rpm with prior thermal treatment at 800°C led to 158% increase in specific surface area compared to MCA on un-calcined clays. This was associated with a 127% improvement in reactivity levels\, when compared to the levels possible from traditional activations. Regarding volcanic materials (VMs)\, prolonged MCA durations of up to 20 mins demonstrate significant modifications in physical and chemical parameters. Compared to 5 mins of MCA at 500 rpm\, 20 mins of MCA resulted in a notable reduction of up to 76% in D50\, a substantial increase of up to 225% in surface area\, and a rise of up to 47% in amorphous content\, accompanied by observable increases in reactivity levels.
URL:https://betongforeningen.se/event/licentiatseminarium-pa-chalmers-3/
CATEGORIES:Disputationer och lic seminarier
ATTACH;FMTTYPE=image/png:https://betongforeningen.se/wp-content/uploads/2024/02/research-chalmers.png
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