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A platform for research: civil engineering, architecture and urbanism
An Experimental Study of the Influence of Moderate Temperatures on the Behavior of Macrosynthetic Fiber Reinforced Concrete
This research shows an experimental campaign performed aiming to understand the influence of moderate temperatures (5 °C, 20 °C and 50 °C) on the mechanical behavior of macrosynthetic fiber reinforced concrete (MSFRC). To do this, a 35 MPa concrete was selected. Two types of polypropylene fibers were added in a relatively high content (10 kg/m3). Steel fiber was used in an equivalent volume as a reference fiber.
Considering that there is no standardized protocol to analyze the temperature effect on MSFRCs, a testing methodology based on UNE-EN 14651:2007 + A1:2008 is proposed. This modified procedure includes a system of insulating thermal covering which allows to maintain the temperature during the tests. Additionally, this study compares the effect of temperature on the pre-cracked and uncracked sections of MSFRCs. For this purpose, MSFRC and SFRC specimens were stored in each conservation temperature. Some of these samples were pre-cracked at the age of 28 days and then, they were reassigned in their respective conservation temperature until testing at 60 days.
The results show that the analyzed temperatures have some influence on the mechanical properties of MSFRCs in terms of their residual flexural strength but to a limited extent, being suitable for environments with equivalent temperatures.
An Experimental Study of the Influence of Moderate Temperatures on the Behavior of Macrosynthetic Fiber Reinforced Concrete
This research shows an experimental campaign performed aiming to understand the influence of moderate temperatures (5 °C, 20 °C and 50 °C) on the mechanical behavior of macrosynthetic fiber reinforced concrete (MSFRC). To do this, a 35 MPa concrete was selected. Two types of polypropylene fibers were added in a relatively high content (10 kg/m3). Steel fiber was used in an equivalent volume as a reference fiber.
Considering that there is no standardized protocol to analyze the temperature effect on MSFRCs, a testing methodology based on UNE-EN 14651:2007 + A1:2008 is proposed. This modified procedure includes a system of insulating thermal covering which allows to maintain the temperature during the tests. Additionally, this study compares the effect of temperature on the pre-cracked and uncracked sections of MSFRCs. For this purpose, MSFRC and SFRC specimens were stored in each conservation temperature. Some of these samples were pre-cracked at the age of 28 days and then, they were reassigned in their respective conservation temperature until testing at 60 days.
The results show that the analyzed temperatures have some influence on the mechanical properties of MSFRCs in terms of their residual flexural strength but to a limited extent, being suitable for environments with equivalent temperatures.
An Experimental Study of the Influence of Moderate Temperatures on the Behavior of Macrosynthetic Fiber Reinforced Concrete
RILEM Bookseries
Serna, Pedro (editor) / Llano-Torre, Aitor (editor) / Martí-Vargas, José R. (editor) / Navarro-Gregori, Juan (editor) / Caballero-Jorna, Marta (author) / Roig-Flores, Marta (author) / Serna, Pedro (author)
RILEM-fib International Symposium on Fibre Reinforced Concrete ; 2020 ; Valencia, Spain
Fibre Reinforced Concrete: Improvements and Innovations ; Chapter: 30 ; 322-332
RILEM Bookseries ; 30
2020-11-05
11 pages
Article/Chapter (Book)
Electronic Resource
English
| British Library Online Contents | 2018
| Wiley | 2024