Details
| Original language | English |
|---|---|
| Title of host publication | ReConStruct |
| Subtitle of host publication | Resilient Concrete Structures - Proceedings of the 20th fib Symposium, 2024 |
| Editors | Richard S. Henry, Alessandro Palermo |
| Pages | 205-214 |
| Number of pages | 10 |
| Publication status | Published - 2024 |
| Event | 20th fib Symposium on ReConStruct: Resilient Concrete Structures, 2024 - Christchurch, New Zealand Duration: 11 Nov 2024 → 13 Nov 2024 |
Publication series
| Name | fib Symposium |
|---|---|
| ISSN (Print) | 2617-4820 |
Abstract
The fatigue behaviour of high-strength concrete with high moisture content has been intensively investigated in the last few years. The results show a strong reduction in the number of cycles to failure with increasing moisture content of the concrete. However, there is still a lack of comprehensive, quantified understanding of the influence of moisture content on the underlying damage mechanisms. Comprehensive fatigue tests on highstrength concrete are being conducted in a joint research project under the framework of the priority program SPP 2020 funded by the German Research Foundation (DFG). The main objectives of the project are to investigate the influence of moisture content in concrete on its fatigue behaviour and describe the moisture-induced damage mechanisms involved in the deterioration process. This paper presents macroscopic and microscopic results of fatigue tests conducted on concrete specimens with four different moisture contents. The results show that the moisture-induced damage mechanisms become highly relevant for moisture contents in concrete exposed to greater than 85% relative humidity. These damage mechanisms are even more pronounced at low load frequencies.
Keywords
- fatigue deterioration, load frequency, microscopic investigation, NMR measurement
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
- Materials Science(all)
- Materials Science (miscellaneous)
Cite this
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ReConStruct: Resilient Concrete Structures - Proceedings of the 20th fib Symposium, 2024. ed. / Richard S. Henry; Alessandro Palermo. 2024. p. 205-214 (fib Symposium).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Moisture-induced damage mechanisms in high-strength concrete due to compressive fatigue loading
AU - Ali, Mohamed Abubakar
AU - Oneschkow, Nadja
AU - Mahlbacher, Markus
AU - Lohaus, Ludger
AU - Haist, Michael
N1 - Publisher Copyright: © fédération internationale du béton (fib).
PY - 2024
Y1 - 2024
N2 - The fatigue behaviour of high-strength concrete with high moisture content has been intensively investigated in the last few years. The results show a strong reduction in the number of cycles to failure with increasing moisture content of the concrete. However, there is still a lack of comprehensive, quantified understanding of the influence of moisture content on the underlying damage mechanisms. Comprehensive fatigue tests on highstrength concrete are being conducted in a joint research project under the framework of the priority program SPP 2020 funded by the German Research Foundation (DFG). The main objectives of the project are to investigate the influence of moisture content in concrete on its fatigue behaviour and describe the moisture-induced damage mechanisms involved in the deterioration process. This paper presents macroscopic and microscopic results of fatigue tests conducted on concrete specimens with four different moisture contents. The results show that the moisture-induced damage mechanisms become highly relevant for moisture contents in concrete exposed to greater than 85% relative humidity. These damage mechanisms are even more pronounced at low load frequencies.
AB - The fatigue behaviour of high-strength concrete with high moisture content has been intensively investigated in the last few years. The results show a strong reduction in the number of cycles to failure with increasing moisture content of the concrete. However, there is still a lack of comprehensive, quantified understanding of the influence of moisture content on the underlying damage mechanisms. Comprehensive fatigue tests on highstrength concrete are being conducted in a joint research project under the framework of the priority program SPP 2020 funded by the German Research Foundation (DFG). The main objectives of the project are to investigate the influence of moisture content in concrete on its fatigue behaviour and describe the moisture-induced damage mechanisms involved in the deterioration process. This paper presents macroscopic and microscopic results of fatigue tests conducted on concrete specimens with four different moisture contents. The results show that the moisture-induced damage mechanisms become highly relevant for moisture contents in concrete exposed to greater than 85% relative humidity. These damage mechanisms are even more pronounced at low load frequencies.
KW - fatigue deterioration
KW - load frequency
KW - microscopic investigation
KW - NMR measurement
UR - http://www.scopus.com/inward/record.url?scp=85216929257&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85216929257
SN - 9782940643257
T3 - fib Symposium
SP - 205
EP - 214
BT - ReConStruct
A2 - Henry, Richard S.
A2 - Palermo, Alessandro
T2 - 20th fib Symposium on ReConStruct: Resilient Concrete Structures, 2024
Y2 - 11 November 2024 through 13 November 2024
ER -