Details
| Originalsprache | Englisch |
|---|---|
| Titel des Sammelwerks | 14th fib Phd Symposium in Civil Engineering, 2022, Proceedings |
| Herausgeber/-innen | Marco di Prisco, Alberto Meda, Gyorgy L. Balazs |
| Seiten | 345-352 |
| Seitenumfang | 8 |
| Publikationsstatus | Veröffentlicht - 2022 |
| Veranstaltung | 14th fib PhD Symposium in Civil Engineering, 2022 - Rome, Italien Dauer: 5 Sept. 2022 → 7 Sept. 2022 |
Publikationsreihe
| Name | fib Symposium |
|---|---|
| ISSN (Print) | 2617-4820 |
Abstract
Creep and shrinkage are strongly influenced by the moisture content of the concrete as well as the ambient humidity. Variations in the humidity as normally observed in outdoor structures are currently covered in fib Model Code 2010 by using the time-average of ambient humidity. However, the effect of cyclic humidity on creep and shrinkage compared to the constant mean humidity has been barely investigated. In this paper, the development of creep and shrinkage of a normal-strength concrete C30/37 with two pre-adjusted moisture contents subjected to cyclic and constant humidity conditions, respectively, are comparatively presented. The results demonstrate that the creep strains are increased up to 47 % due to cyclic humidity compared to those due to the corresponding average constant humidity. Therefore, existing models need to be modified to take this effect into account.
ASJC Scopus Sachgebiete
- Ingenieurwesen (insg.)
- Tief- und Ingenieurbau
- Ingenieurwesen (insg.)
- Bauwesen
- Werkstoffwissenschaften (insg.)
- Werkstoffwissenschaften (sonstige)
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14th fib Phd Symposium in Civil Engineering, 2022, Proceedings. Hrsg. / Marco di Prisco; Alberto Meda; Gyorgy L. Balazs. 2022. S. 345-352 (fib Symposium).
Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › Peer-Review
}
TY - GEN
T1 - Creep and shrinkage of concrete under cyclic ambient humidity conditions
AU - Podhajecky, Anna Lena
AU - Oneschkow, Nadja
AU - Haist, Michael
N1 - Funding Information: This research was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) within the project “Creep and shrinkage at variable hygric exposures”, project number 327002599. The authors would like to express their gratitude for the financial support.
PY - 2022
Y1 - 2022
N2 - Creep and shrinkage are strongly influenced by the moisture content of the concrete as well as the ambient humidity. Variations in the humidity as normally observed in outdoor structures are currently covered in fib Model Code 2010 by using the time-average of ambient humidity. However, the effect of cyclic humidity on creep and shrinkage compared to the constant mean humidity has been barely investigated. In this paper, the development of creep and shrinkage of a normal-strength concrete C30/37 with two pre-adjusted moisture contents subjected to cyclic and constant humidity conditions, respectively, are comparatively presented. The results demonstrate that the creep strains are increased up to 47 % due to cyclic humidity compared to those due to the corresponding average constant humidity. Therefore, existing models need to be modified to take this effect into account.
AB - Creep and shrinkage are strongly influenced by the moisture content of the concrete as well as the ambient humidity. Variations in the humidity as normally observed in outdoor structures are currently covered in fib Model Code 2010 by using the time-average of ambient humidity. However, the effect of cyclic humidity on creep and shrinkage compared to the constant mean humidity has been barely investigated. In this paper, the development of creep and shrinkage of a normal-strength concrete C30/37 with two pre-adjusted moisture contents subjected to cyclic and constant humidity conditions, respectively, are comparatively presented. The results demonstrate that the creep strains are increased up to 47 % due to cyclic humidity compared to those due to the corresponding average constant humidity. Therefore, existing models need to be modified to take this effect into account.
UR - http://www.scopus.com/inward/record.url?scp=85142841663&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85142841663
SN - 9782940643172
T3 - fib Symposium
SP - 345
EP - 352
BT - 14th fib Phd Symposium in Civil Engineering, 2022, Proceedings
A2 - di Prisco, Marco
A2 - Meda, Alberto
A2 - Balazs, Gyorgy L.
T2 - 14th fib PhD Symposium in Civil Engineering, 2022
Y2 - 5 September 2022 through 7 September 2022
ER -