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Mechanical and durability properties of concrete subjected to early-age freeze–thaw cycles
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering. Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, School of Civil Engineering, Southeast University, 211189, Nanjing, People’s Republic of China.ORCID iD: 0000-0003-2668-1329
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering. Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, School of Civil Engineering, Southeast University, 211189, Nanjing, People’s Republic of China.ORCID iD: 0000-0002-8372-1967
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, School of Civil Engineering, Southeast University, 211189, Nanjing, People’s Republic of China.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering. SINTEF Narvik AS, 8517, Narvik, Norway.ORCID iD: 0000-0002-8682-876x
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2021 (English)In: Materials and Structures, ISSN 1359-5997, E-ISSN 1871-6873, Vol. 54, no 6, article id 211Article in journal (Refereed) Published
Abstract [en]

Early-age frost damage to concrete used in winter construction or in cold environments negatively affects the development of the hydration process and the performance of the concrete, thereby reducing the service life of the building structure. Experimental research was carried out to investigate the compressive strength, resistance to chloride penetration and resistance to freeze–thaw of concrete specimens subjected to early-age freeze–thaw cycles (E-FTCs). The effects that different pre-curing times of concrete and mineral admixtures have on the properties of early-age frost-affected concrete were also analyzed. Results show that the earlier the freeze–thaw cycles (FTCs), the poorer the later-age performance. Later-age water-curing cannot completely restore the damage that E-FTCs do to concrete. In the same conditions used in this study, the effects of E-FTCs on later-age mechanical and durability properties of ordinary Portland cement concrete (OPC) are small. The incorporation of fly ash significantly reduces the resistance to freeze–thaw of concrete during early-age and later-age. The presence of silica fumes has an adverse effect on the later-age resistance to freeze–thaw. In general, the recovery percentage of later-age durability indexes of concrete subjected to E-FTCs is lower than that of compressive strength. For concrete subjected to E-FTCs, it is more important to ensure the recovery of later-age durability.

Place, publisher, year, edition, pages
Springer, 2021. Vol. 54, no 6, article id 211
National Category
Construction Management
Research subject
Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-87893DOI: 10.1617/s11527-021-01802-xISI: 000714600700001Scopus ID: 2-s2.0-85118733764OAI: oai:DiVA.org:ltu-87893DiVA, id: diva2:1611305
Note

Validerad;2021;Nivå 2;2021-11-15 (beamah);

Funder: National Natural Science Foundation of China (51378104)

Available from: 2021-11-15 Created: 2021-11-15 Last updated: 2023-09-04Bibliographically approved

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Liu, DongyunTu, YongmingSas, GabrielElfgren, Lennart

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