Fatigue behavior of concrete in cyclic low-temperature impacts

Wear and tear of concrete and reinforced concrete structures in harsh climatic conditions is analyzed as a fatigue process with various cumulative failures. For the criteria of their prediction, it is proposed to use dynamic models containing the kinetics of changes of informative and sensitive indi...

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Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 687; no. 3; pp. 33010 - 33015
Main Authors Pinus, B I, Kalashnikov, M P
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.12.2019
Subjects
Concrete
Concrete structures
Dynamic models
Fatigue failure
Fracture mechanics
Freeze thaw cycles
Frost resistance
Indicators
Low temperature
Reinforced concrete
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Summary:Wear and tear of concrete and reinforced concrete structures in harsh climatic conditions is analyzed as a fatigue process with various cumulative failures. For the criteria of their prediction, it is proposed to use dynamic models containing the kinetics of changes of informative and sensitive indicators of the constructive properties of concrete during cyclical freezing and thawing (CFT). An experimental-analytical generalization of the measurement of the following indicators is presented: strength, components of deformations, cracking, and the energy potential of concrete destruction during the exhaustion of its frost resistance. It is proposed, as a first approximation permissible under the conditions of the onset of fatigue parametric failures, to take the level of external temperature and humidity effects equivalent to (ultimately) 85 ÷ 90% of the frost resistance mark.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/687/3/033010