Research on the Fatigue Properties of High Strength Concrete after Exposure to High Temperature under Low Cyclic Compressive Loading

Autor: Linhao Wang, Haijing Gao, Haibiao Gao, Zhili Luo
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Shock and Vibration, Vol 2018 (2018)
Druh dokumentu: article
ISSN: 1070-9622
1875-9203
DOI: 10.1155/2018/3762685
Popis: By using an electrohydraulic servo fatigue testing machine, fatigue tests were performed on C60 high strength concrete (HSC) under low cyclic compressive loading after undergoing normal temperature, 200°C, 400°C, 600°C, and 800°C. Failure patterns of high strength concrete under low cyclic compressive loading were observed. The influence of the high temperature process on the static elastic modulus of high strength concrete was analyzed. By studying the development law of fatigue strain, regression equations of fatigue strain after different high temperatures were established. Furthermore, the fatigue deformation modulus ratio was defined as the damage variable and the relationship models between the high temperature process and the fatigue damage were established. It provides the experimental foundation for fatigue damage analysis of high strength concrete in objective working conditions, which includes repeated loading and different high temperature processes.
Databáze: Directory of Open Access Journals
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