Mechanical and dynamic properties of polypropylene fiber reinforced concrete

R Sridhar, R Prasad - … Integrity Assessment: Proceedings of ICONS 2018, 2020 - Springer
Structural Integrity Assessment: Proceedings of ICONS 2018, 2020Springer
In this present study, static and dynamic properties of polypropylene fiber reinforced
concrete (PPFRC) have been experimentally studied. The mechanical properties have been
carried out by conducting compression, splitting tensile and flexural strength of PPFRCs. In
addition to this, dynamic properties such as damping ratio and fundamental frequency of
PPFRC beams in free–free conditions were also determined experimentally. In this paper,
the influence of 0.1, 0.2, 0.3, and 0.4% variation of fiber contents by total fiber volume …
Abstract
In this present study, static and dynamic properties of polypropylene fiber reinforced concrete (PPFRC) have been experimentally studied. The mechanical properties have been carried out by conducting compression, splitting tensile and flexural strength of PPFRCs. In addition to this, dynamic properties such as damping ratio and fundamental frequency of PPFRC beams in free–free conditions were also determined experimentally. In this paper, the influence of 0.1, 0.2, 0.3, and 0.4% variation of fiber contents by total fiber volume fraction of concrete was investigated. In order to determine the effect of polypropylene fibers in concrete and to compare, the properties of plain concrete have also been studied. The results emphasize that the addition of fibers reduces the fundamental frequency and increase the damping ratio of concrete. In the present study, damage assessment of PPFRC has also been experimentally studied. The test results emphasize that the addition of fibers reduces the fundamental frequency and increase the damping ratio of concrete. Damping of PPFRC beams increases with the increase of damage whilst the fundamental natural frequency decreases with an increase of damage. The changes of fundamental natural frequency and damping values have been correlated to the damage degree of the prismatic beam experimentally. The dynamic modulus of elasticity of PPFRC was lower than that of normal concrete. It has been found that polypropylene fiber reinforced concrete with a fiber content of 0.4% has the best properties.
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