In recent years, innovative composites made of Cementitious Matrix Reinforced by continuous Fibers (FRCM) were introduced for strengthening of Reinforced Concrete (RC) members. Effectiveness of an externally bonded strengthening material strongly depends on bond performances and on mechanical proper-ties of concrete cover. Common design approaches for the shear strengthening of concrete beams with Fiber Reinforced Polymers (FRP) materials involve the concrete/fibers bond properties. In this paper the Italian Guidelines provided by CNR are applied to an FRCM material considering the bond-slip relation determined in a previous phase of the research. Differences respect to the case of an FRP strengthening material are dis-cussed.
Shear strengthening of RC beams with PBO-FRCM composites
FOCACCI, FRANCESCO
2010-01-01
Abstract
In recent years, innovative composites made of Cementitious Matrix Reinforced by continuous Fibers (FRCM) were introduced for strengthening of Reinforced Concrete (RC) members. Effectiveness of an externally bonded strengthening material strongly depends on bond performances and on mechanical proper-ties of concrete cover. Common design approaches for the shear strengthening of concrete beams with Fiber Reinforced Polymers (FRP) materials involve the concrete/fibers bond properties. In this paper the Italian Guidelines provided by CNR are applied to an FRCM material considering the bond-slip relation determined in a previous phase of the research. Differences respect to the case of an FRP strengthening material are dis-cussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
