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A platform for research: civil engineering, architecture and urbanism
A Study of the Flexural Behavior of Fiber-Reinforced Concretes Exposed to Moderate Temperatures
[EN] The use of synthetic fibers in fiber-reinforced concretes (FRCs) is often avoided due to the mistrust of lower performance at changing temperatures. This work examines the effect of moderate temperatures on the flexural strengths of FRCs. Two types of polypropylene fibers were tested, and one steel fiber was employed as a reference. Three-point bending tests were carried out following an adapted methodology based on the standard EN 14651. This adapted procedure included an insulation system that allowed the assessment of FRC flexural behavior after being exposed for two months at temperatures of 5, 20, 35 and 50 °C. In addition, the interaction of temperature with a precracked state was also analyzed. To do this, several specimens were pre-cracked to 0.5 mm after 28days and conditioned in their respective temperature until testing. The findings suggest that this range of moderate temperatures did not degrade the behavior of FRCs to a great extent since the analysis of variances showed that temperature is not always a significant factor; however, it did have an influence on the pre-cracked specimens at 35 and 50 °C. ; This research was funded by Spanish Ministry of Science, Innovation and Universities, grant number FPU18/06145. ; Caballero-Jorna, M.; Roig-Flores, M.; Serna Ros, P. (2021). A Study of the Flexural Behavior of Fiber-Reinforced Concretes Exposed to Moderate Temperatures. Materials. 14(13):1-18. https://doi.org/10.3390/ma14133522 ; 1 ; 18 ; 14 ; 13
A Study of the Flexural Behavior of Fiber-Reinforced Concretes Exposed to Moderate Temperatures
[EN] The use of synthetic fibers in fiber-reinforced concretes (FRCs) is often avoided due to the mistrust of lower performance at changing temperatures. This work examines the effect of moderate temperatures on the flexural strengths of FRCs. Two types of polypropylene fibers were tested, and one steel fiber was employed as a reference. Three-point bending tests were carried out following an adapted methodology based on the standard EN 14651. This adapted procedure included an insulation system that allowed the assessment of FRC flexural behavior after being exposed for two months at temperatures of 5, 20, 35 and 50 °C. In addition, the interaction of temperature with a precracked state was also analyzed. To do this, several specimens were pre-cracked to 0.5 mm after 28days and conditioned in their respective temperature until testing. The findings suggest that this range of moderate temperatures did not degrade the behavior of FRCs to a great extent since the analysis of variances showed that temperature is not always a significant factor; however, it did have an influence on the pre-cracked specimens at 35 and 50 °C. ; This research was funded by Spanish Ministry of Science, Innovation and Universities, grant number FPU18/06145. ; Caballero-Jorna, M.; Roig-Flores, M.; Serna Ros, P. (2021). A Study of the Flexural Behavior of Fiber-Reinforced Concretes Exposed to Moderate Temperatures. Materials. 14(13):1-18. https://doi.org/10.3390/ma14133522 ; 1 ; 18 ; 14 ; 13
A Study of the Flexural Behavior of Fiber-Reinforced Concretes Exposed to Moderate Temperatures
Caballero-Jorna, Marta (author) / Roig-Flores, Marta (author) / Serna Ros, Pedro (author) / MINISTERIO DE CIENCIA INNOVACION Y UNIVERSIDADES
2021-07-01
PMC8269587
Article (Journal)
Electronic Resource
English
DDC:
624
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