Comparison of cracking force in HPFRCC reinforced beams compared to reference beam

Volume 3, Issue 8 - Serial Number 30
November 2021
Pages 11-20

Document Type : Research Article

Authors

1 Bachelor's student, civil engineering, Qom University of Technology

2 Civil Engineering Expert

Abstract
In this study, the cracking force in HPFRCC reinforced beams was compared to reference beams. In this regard, a reference beam and four beams reinforced with a thin layer of HPFRCC in the lower part of the beams were subjected to four-point pure bending experiment and finally the impact of reinforcement on the resulting forces is investigated and compared. In the reference concrete beam, the cracks are coupled with the tensile stress-strain curvature softening and the structural bearing capacity decreases with increasing cracks. Therefore, relying on reinforcement is essential to maintain the structure. However, in the lower layer beams of the HPRFCC the microtracks allow the material to enter the hardening stage and increase the bearing capacity. This increase is more noticeable in specimens with more fibers.

Keywords

Subjects
  • Receive Date 25 September 2021
  • Revise Date 01 October 2021
  • Accept Date 22 October 2021
  • First Publish Date 23 October 2021
  • Publish Date 23 October 2021