A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Steel Fiber Reinforced Concrete Fatigue Life Under Flexural Loading
https://orcid.org/http://orcid.org/0000-0002-9636-5834
https://orcid.org/http://orcid.org/0000-0002-4255-2861
https://orcid.org/http://orcid.org/0000-0002-8171-7956
https://orcid.org/http://orcid.org/0000-0002-0160-7619
There is still a major gap in the literature when it comes to the study of the flexural fatigue degradation of fiber reinforced concrete (FRC). Although relevant papers have already brought scientific breakthrough in the analysis of fiber reinforced concrete under compressive fatigue loads, the application of cementitious composite members demand that the models and the design mathematical foundation to be elaborated in accordance to the flexural mechanical response. Therefore, the present research brings an overview of the influence of two key parameters on the flexural fatigue life: fatigue load level and load ratio. Moreover, the three parameter Weibull distribution is proposed as alternative to the more traditional linear Wöhler curves to verify the fatigue life of the cement composite. The experimental campaign encompassed flexural fatigue tests performed on notched prisms, which were first monotonically pre-cracked until reaching a crack mouth opening displacement of 0.50 mm. Thereafter, the specimens were subjected to fatigue loading until reaching 1,000,000 cycles or the material failure. The fatigue tests were performed under three distinct load levels (70%, 80% and 90% of fR,1) and stress ratios (0.20, 0.30, 0.40). Based on the Weibull curves, it was possible to determine the flexural fatigue life equations in terms of 5% of failure probability for all studied fatigue parameters. The Weibull curves could bring a more accurate analysis of the fatigue life of steel fiber reinforced concrete and may be used as major references for future design guidelines of FRC members.
Steel Fiber Reinforced Concrete Fatigue Life Under Flexural Loading
https://orcid.org/http://orcid.org/0000-0002-9636-5834
https://orcid.org/http://orcid.org/0000-0002-4255-2861
https://orcid.org/http://orcid.org/0000-0002-8171-7956
https://orcid.org/http://orcid.org/0000-0002-0160-7619
There is still a major gap in the literature when it comes to the study of the flexural fatigue degradation of fiber reinforced concrete (FRC). Although relevant papers have already brought scientific breakthrough in the analysis of fiber reinforced concrete under compressive fatigue loads, the application of cementitious composite members demand that the models and the design mathematical foundation to be elaborated in accordance to the flexural mechanical response. Therefore, the present research brings an overview of the influence of two key parameters on the flexural fatigue life: fatigue load level and load ratio. Moreover, the three parameter Weibull distribution is proposed as alternative to the more traditional linear Wöhler curves to verify the fatigue life of the cement composite. The experimental campaign encompassed flexural fatigue tests performed on notched prisms, which were first monotonically pre-cracked until reaching a crack mouth opening displacement of 0.50 mm. Thereafter, the specimens were subjected to fatigue loading until reaching 1,000,000 cycles or the material failure. The fatigue tests were performed under three distinct load levels (70%, 80% and 90% of fR,1) and stress ratios (0.20, 0.30, 0.40). Based on the Weibull curves, it was possible to determine the flexural fatigue life equations in terms of 5% of failure probability for all studied fatigue parameters. The Weibull curves could bring a more accurate analysis of the fatigue life of steel fiber reinforced concrete and may be used as major references for future design guidelines of FRC members.
Steel Fiber Reinforced Concrete Fatigue Life Under Flexural Loading
https://orcid.org/http://orcid.org/0000-0002-9636-5834
https://orcid.org/http://orcid.org/0000-0002-4255-2861
https://orcid.org/http://orcid.org/0000-0002-8171-7956
https://orcid.org/http://orcid.org/0000-0002-0160-7619
There is still a major gap in the literature when it comes to the study of the flexural fatigue degradation of fiber reinforced concrete (FRC). Although relevant papers have already brought scientific breakthrough in the analysis of fiber reinforced concrete under compressive fatigue loads, the application of cementitious composite members demand that the models and the design mathematical foundation to be elaborated in accordance to the flexural mechanical response. Therefore, the present research brings an overview of the influence of two key parameters on the flexural fatigue life: fatigue load level and load ratio. Moreover, the three parameter Weibull distribution is proposed as alternative to the more traditional linear Wöhler curves to verify the fatigue life of the cement composite. The experimental campaign encompassed flexural fatigue tests performed on notched prisms, which were first monotonically pre-cracked until reaching a crack mouth opening displacement of 0.50 mm. Thereafter, the specimens were subjected to fatigue loading until reaching 1,000,000 cycles or the material failure. The fatigue tests were performed under three distinct load levels (70%, 80% and 90% of fR,1) and stress ratios (0.20, 0.30, 0.40). Based on the Weibull curves, it was possible to determine the flexural fatigue life equations in terms of 5% of failure probability for all studied fatigue parameters. The Weibull curves could bring a more accurate analysis of the fatigue life of steel fiber reinforced concrete and may be used as major references for future design guidelines of FRC members.
Steel Fiber Reinforced Concrete Fatigue Life Under Flexural Loading
RILEM Bookseries
Mechtcherine, Viktor (editor) / Signorini, Cesare (editor) / Junger, Dominik (editor) / Monteiro, Vitor (author) / Iranildo, Silva Junior (author) / Daniel, Cardoso (author) / de Andrade Silva, Flávio (author)
RILEM-fib International Symposium on Fibre Reinforced Concrete ; 2024 ; Dresden, Germany
Transforming Construction: Advances in Fiber Reinforced Concrete ; Chapter: 47 ; 381-389
RILEM Bookseries ; 54
2024-09-12
9 pages
Article/Chapter (Book)
Electronic Resource
English
Flexural Fatigue Behavior of PAN Fiber Reinforced Concrete under Cyclic Loading
| British Library Conference Proceedings | 2011
| British Library Online Contents | 2006
Fatigue Life Prediction of Corroded Reinforced Concrete Beams under Flexural Loading
| British Library Conference Proceedings | 2011
Fatigue life prediction of fiber reinforced concrete under flexural load
| British Library Online Contents | 1999