Experimental Analysis of Fracture Strength of Roller-Compacted Concrete Reinforced with Natural Jute Fibers under Different Loading Modes

Document Type : Scientific - Research

Authors
Babak Golchin 1
Behnam Ramzi 2
Ramin Meshkabadi 3
1 Assistant Professor, Department of Civil Engineering, University of Mohaghegh Ardabili, Ardabil, Iran
2 M.Sc., Department of Civil Engineering, Ahar Branch, Islamic Azad University, Ahar, Iran
3 Assistant Professor, Department of Advanced Technologies, University of Mohaghegh Ardabili, Ardabil, Iran
10.22119/jte.2024.467728.2713
Abstract
In this research, the fracture strength of roller-compacted concrete reinforced with natural fibers under different loading conditions has been investigated. For this purpose and creating loading modes of pure tension, pure shear and the combination of the two, a semi-circular sample with an edge crack was used. Three-point bending test was used to determine the fracture strength of the samples. The critical stress intensity coefficient obtained from the failure test, and the shape coefficients obtained from the finite element analysis were used as evaluation criteria. The results showed that the increase in the failure load due to the increase in the percentage of natural fibers in the samples leads to the fact that the cracked roller-compacted concrete samples with natural fibers are more resistant to crack growth than the samples without natural fibers in all loading modes. The optimal percentage of natural fibers in different loading modes according to the fracture resistance of the samples is 0.3% of the total weight of the roller-compacted concrete. 

Keywords

Subjects

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Quarterly Journal of Transportation Engineering
Volume 16, Issue 4 - Serial Number 65
Spring 2025
Pages 4935-4949

  • Receive Date 13 July 2024
  • Revise Date 10 August 2024
  • Accept Date 13 August 2024