Strut-and-Tie Model for Shear Friction of Concrete with Fiber-Reinforced Polymer Composites

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Strut-and-Tie Model for Shear Friction of Concrete with Fiber-Reinforced Polymer Composites

Author(s): Nicolas Saenz, Chris P. Pantelides, and Lawrence D. Reaveley

Publication: Structural Journal

Volume: 101

Issue: 6

Appears on pages(s): 863-871

Keywords: concrete; polymer; shear strength; strut-and-tie

Date: 11/1/2004

Abstract:
Analytical models are developed from tests of shear transfer units strengthened externally with carbon fiber-reinforced polymer (CFRP) composite strips. The analytical models are based on superposition of the two components of shear friction strength: that due to concrete and that due to concrete-CFRP interaction. The simplified model, based on experimental observations, was used to separate the shear friction contribution of concrete and that of concrete-CFRP interaction. The strut-and-tie model depends on the effective CFRP tensile strain, which is a function of the normalized CFRP stiffness. The strut-and-tie model can capture the shear friction contribution due to the tensioning effect of the CFRP strip. This is a novel application of the strut-and-tie model in externally applied CFRP composites for concrete under shear friction, and it is successful in representing the experimental behavior with good accuracy.