TY - JOUR
T1 - Shear performance of lightweight SCC composite beam internally reinforced with CFRP laminate stirrups and GFRP bars
T2 - Experimental and analytical study
AU - Nawaz, Waleed
AU - Elchalakani, Mohammad
AU - Al-Ameri, Riyad
AU - Yehia, Sherif
AU - Hassanli, Reza
AU - Liu, Huiyuan
AU - Yang, Bo
N1 - Funding Information:
The study was conducted when the author was a recipient of a University Postgraduate Award ( UPA ) and a University of Western Australia International Fee Scholarship ( UIFS ). The authors would like to thank graduate student Courtney for her continuous help in the lab during the experiments.
Publisher Copyright:
© 2023 The Authors
PY - 2023/12
Y1 - 2023/12
N2 - This research demonstrates the structure feasibility of using carbon fiber reinforced polymer (CFRP) laminate stirrups as a form of transverse reinforcement in shear deficient GFRP reinforced lightweight self-compacting concrete (LWSCC) beams. An experimental study performed on eight full-scale shear deficient beam specimens. One beam served as the reference specimen and remaining beam specimens were internally reinforced with impregnated CFRP laminate stirrups. The parameters investigated in this study were the stirrup configuration, number of layers, stirrup spacing and width. Specimen tested under two-point loading and all results in term of load-deflection response as well as their failure modes were reported. All tested specimens failed due to shear compression failure mode along with the rupture of CFRP laminate stirrups, and the inclusion of CFRP laminate stirrups has significantly enhanced the nominal capacity of LWSCC beams ranged from 91%− 200% over control specimen. Shear strengths of the tested specimens were also theoretically predicted using different design standards. Comparison between the experimental and predicted shear strength has shown that ACI 440.1R-15, CSA S806–12, and CSA S6–14 provided the closest prediction. Therefore, it has been concluded that CFRP laminate stirrups can be used as a transverse reinforcement in GFRP reinforced LWSCC beams.
AB - This research demonstrates the structure feasibility of using carbon fiber reinforced polymer (CFRP) laminate stirrups as a form of transverse reinforcement in shear deficient GFRP reinforced lightweight self-compacting concrete (LWSCC) beams. An experimental study performed on eight full-scale shear deficient beam specimens. One beam served as the reference specimen and remaining beam specimens were internally reinforced with impregnated CFRP laminate stirrups. The parameters investigated in this study were the stirrup configuration, number of layers, stirrup spacing and width. Specimen tested under two-point loading and all results in term of load-deflection response as well as their failure modes were reported. All tested specimens failed due to shear compression failure mode along with the rupture of CFRP laminate stirrups, and the inclusion of CFRP laminate stirrups has significantly enhanced the nominal capacity of LWSCC beams ranged from 91%− 200% over control specimen. Shear strengths of the tested specimens were also theoretically predicted using different design standards. Comparison between the experimental and predicted shear strength has shown that ACI 440.1R-15, CSA S806–12, and CSA S6–14 provided the closest prediction. Therefore, it has been concluded that CFRP laminate stirrups can be used as a transverse reinforcement in GFRP reinforced LWSCC beams.
KW - Beam
KW - CFRP laminate stirrups
KW - GFRP
KW - Lightweight concrete
KW - SCC
KW - Shear
UR - https://www.scopus.com/pages/publications/85179120470
U2 - 10.1016/j.istruc.2023.105642
DO - 10.1016/j.istruc.2023.105642
M3 - Article
AN - SCOPUS:85179120470
SN - 2352-0124
VL - 58
JO - Structures
JF - Structures
M1 - 105642
ER -