Details
| Original language | English |
|---|---|
| Title of host publication | Proceedings for the 6th fib International Congress, 2022- Concrete Innovation for Sustainability |
| Editors | Stine Stokkeland, Henny Cathrine Braarud |
| Pages | 339-348 |
| Number of pages | 10 |
| Publication status | Published - 2022 |
| Event | 6th fib International Congress on Concrete Innovation for Sustainability, 2022 - Oslo, Norway Duration: 12 Jun 2022 → 16 Jun 2022 |
Publication series
| Name | fib Symposium |
|---|---|
| ISSN (Print) | 2617-4820 |
Abstract
Decreasing the environmental effects of concrete construction will require a pronounced reduction in concrete use and thus more slender structures, which in turn are more prone to fatigue. The same is true for offshore structures e.g. the grouted connection in wind-energy systems. The design procedure of fatigue-prone structures today, however, still has to cope with different influences. Investigations carried out by the authors show that a pronounced reduction in load cycles can be observed with increasing moisture content of the concrete. The authors were able to relate the damaging process to water transport processes in the pore system of the concrete. In this contribution, both experimental as well as numerical investigations are presented, which give insights into the fatigue mechanisms. These investigations encompass both macroscopic fatigue tests at various moisture conditions as well as Nuclear Magnetic Resonance Tests (NMR) monitoring water redistribution as a result of cyclic loading. Measurements of gas adsorption give insight into microstructural degradation.
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
- Materials Science(all)
- Materials Science (miscellaneous)
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Proceedings for the 6th fib International Congress, 2022- Concrete Innovation for Sustainability. ed. / Stine Stokkeland; Henny Cathrine Braarud. 2022. p. 339-348 (fib Symposium).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - New insights into the moisture effect on the fatigue behavior of concrete
AU - Mahlbacher, Markus
AU - Ali, Mohamed Abubakar
AU - Tomann, Christoph
AU - Oneschkow, Nadja
AU - Aldakheel, Fadi
AU - Noii, Nima
AU - Wriggers, Peter
AU - Lohaus, Ludger
AU - Haist, Michael
N1 - Funding Information: Acknowledgments: This research was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation), Project numbers (353757395) (HA 7917/7-2 | LO 751/22-2 | WR 19/58-2), within the Priority Program 2020 ‘Cyclic Deterioration of High-Performance Concrete in an Experimental-Virtual Lab’.
PY - 2022
Y1 - 2022
N2 - Decreasing the environmental effects of concrete construction will require a pronounced reduction in concrete use and thus more slender structures, which in turn are more prone to fatigue. The same is true for offshore structures e.g. the grouted connection in wind-energy systems. The design procedure of fatigue-prone structures today, however, still has to cope with different influences. Investigations carried out by the authors show that a pronounced reduction in load cycles can be observed with increasing moisture content of the concrete. The authors were able to relate the damaging process to water transport processes in the pore system of the concrete. In this contribution, both experimental as well as numerical investigations are presented, which give insights into the fatigue mechanisms. These investigations encompass both macroscopic fatigue tests at various moisture conditions as well as Nuclear Magnetic Resonance Tests (NMR) monitoring water redistribution as a result of cyclic loading. Measurements of gas adsorption give insight into microstructural degradation.
AB - Decreasing the environmental effects of concrete construction will require a pronounced reduction in concrete use and thus more slender structures, which in turn are more prone to fatigue. The same is true for offshore structures e.g. the grouted connection in wind-energy systems. The design procedure of fatigue-prone structures today, however, still has to cope with different influences. Investigations carried out by the authors show that a pronounced reduction in load cycles can be observed with increasing moisture content of the concrete. The authors were able to relate the damaging process to water transport processes in the pore system of the concrete. In this contribution, both experimental as well as numerical investigations are presented, which give insights into the fatigue mechanisms. These investigations encompass both macroscopic fatigue tests at various moisture conditions as well as Nuclear Magnetic Resonance Tests (NMR) monitoring water redistribution as a result of cyclic loading. Measurements of gas adsorption give insight into microstructural degradation.
UR - http://www.scopus.com/inward/record.url?scp=85143906242&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85143906242
SN - 9782940643158
T3 - fib Symposium
SP - 339
EP - 348
BT - Proceedings for the 6th fib International Congress, 2022- Concrete Innovation for Sustainability
A2 - Stokkeland, Stine
A2 - Braarud, Henny Cathrine
T2 - 6th fib International Congress on Concrete Innovation for Sustainability, 2022
Y2 - 12 June 2022 through 16 June 2022
ER -