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Assessment of frost damage in hydraulic structures using a hygro-thermo-mechanical multiphase model
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Betongbyggnad.ORCID-id: 0000-0002-4015-3373
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Betongbyggnad.ORCID-id: 0000-0003-3586-8988
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Betongbyggnad.ORCID-id: 0000-0003-2594-4107
2019 (engelsk)Inngår i: Sustainable and Safe Dams Around the World / [ed] Jean-Pierre Tournier, Tony Bennett & Johanne Bibeau, 2019, Vol. 2, s. 332-346Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

This paper presents an extension of a novel hygro-thermo-mechanical multiphase model for simulation of freezing of partially saturated air-entrained concrete on the structural scale to account for the effect of damage in the material. The model is applied in an example which investigates the extent and severity of frost damage caused by extremely cold climate conditions in a typical concrete wall in a waterway constructed with air-entrained concrete. The results were concluded to comply with observations made in experimental work and testing of freezing air-entrained concrete under exposure conditions similar to those in hydraulic structures. Furthermore, the results indicate that the effect of short periods of time with high rates of freezing was rather small on the obtained damage. Additionally, increasing the depth of the boundary region with an initially high degree of water saturation on the upstream side had also a rather small effect on the damaged zone.

sted, utgiver, år, opplag, sider
2019. Vol. 2, s. 332-346
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Byggvetenskap
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URN: urn:nbn:se:kth:diva-253820OAI: oai:DiVA.org:kth-253820DiVA, id: diva2:1326712
Konferanse
ICOLD 2019 Symposium
Merknad

QC 20190624

Tilgjengelig fra: 2019-06-18 Laget: 2019-06-18 Sist oppdatert: 2024-03-18bibliografisk kontrollert

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