Title:
Performance of FRP Strengthened Concrete Beams Anchored with Fiber Anchors Under Cyclic Loading
Author(s):
Salman Alshamrani
Publication:
Web Session
Volume:
ws_F23_SalmanAlshamrani.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
10/29/2023
Abstract:
This research extends the use of carbon fiber anchors to secure the top and bottom CFRP flexural sheets under cyclic loading. Five reinforced concrete beams were cast, strengthened, and tested under reversed cycles of four-point bending to failure. The beams were categorized into a control specimen, strengthened specimens with thin sheets (330 g/m2) with and without fiber anchors and strengthened specimens with thick sheets (1300 g/m2) with and without fiber anchors. They were tested cyclically under displacement control according to the AC 125 loading protocol. The failure modes ranged from classical ultimate failure for the control beam to rupture and IC debonding for the thin CFRP sheets. On the other hand, debonding took place for the thicker sheets with no anchors while the thicker sheets with fiber anchors underwent cover delamination failure mode despite the fact that the sheets were extended very close to the simple supports.