TY - JOUR
T1 - Experimental Volume Incidence Study and the Relationship of Polypropylene Macrofiber Slenderness to the Mechanical Strengths of Fiber-Reinforced Concretes
AU - Almeida Del Savio, Alexandre
AU - La Torre, Darwin
AU - Cedrón, Juan P.
N1 - Funding Information:
This work was supported and funded by the Institute of Scientific Research of the Universidad de Lima (IDIC) (grant numbers PI.71.001.2020) and conducted by the Civil Engineering Department at the same university.
Publisher Copyright:
© 2022 by the authors.
PY - 2022/9/11
Y1 - 2022/9/11
N2 - An experimental study was conducted to examine the mechanical strengths of concretes with straight high-strength knurled polypropylene macrofibers. Incidences of concrete mechanical strengths were determined for three different fiber dosages and lengths. In addition, compressive, indirect-splitting-test tensile, and flexural strengths were determined through testing. The results showed no statistically significant correlation between the volume and length of fibers with the compressive strength of polypropylene fiber-reinforced concrete (PPFRC). However, there was a statistically significant correlation between the split tensile strength, the volume, and the length of the fibers when the volume was greater than 0.80%, and the length of the fibers was greater than 50 mm. Furthermore, the modulus of rupture increased when the volume of fibers was greater than 0.80% and the length of the fibers was 60 mm. Finally, equations were proposed to determine the tensile strength by split test and the modulus of rupture as a function of the mixture’s resistance without fibers, the fibers’ volume and length.
AB - An experimental study was conducted to examine the mechanical strengths of concretes with straight high-strength knurled polypropylene macrofibers. Incidences of concrete mechanical strengths were determined for three different fiber dosages and lengths. In addition, compressive, indirect-splitting-test tensile, and flexural strengths were determined through testing. The results showed no statistically significant correlation between the volume and length of fibers with the compressive strength of polypropylene fiber-reinforced concrete (PPFRC). However, there was a statistically significant correlation between the split tensile strength, the volume, and the length of the fibers when the volume was greater than 0.80%, and the length of the fibers was greater than 50 mm. Furthermore, the modulus of rupture increased when the volume of fibers was greater than 0.80% and the length of the fibers was 60 mm. Finally, equations were proposed to determine the tensile strength by split test and the modulus of rupture as a function of the mixture’s resistance without fibers, the fibers’ volume and length.
KW - compressive strength
KW - fiber-reinforced concrete
KW - flexural strength
KW - polypropylene macro fibers
KW - tensile strength
UR - https://hdl.handle.net/20.500.12724/17635
UR - http://www.scopus.com/inward/record.url?scp=85138648638&partnerID=8YFLogxK
U2 - 10.3390/app12189126
DO - 10.3390/app12189126
M3 - Artículo (Contribución a Revista)
AN - SCOPUS:85138648638
SN - 2076-3417
VL - 12
JO - Applied Sciences (Switzerland)
JF - Applied Sciences (Switzerland)
IS - 18
M1 - 9126
ER -