Effect of the Volume Fraction of Jute Fiber on the Interlaminar Shear Stress and Tensile Behavior Characteristics of Hybrid GlassJute Fiber Reinforced Polymer Composite Bar for Concrete Structures

Abstract EN

Hybrid glass/jute fiber reinforced polymer (HGJFRP) composite bars were manufactured for concrete structures, and their interlaminar shear stress and tensile performance were evaluated.

HGJFRP composite bars were manufactured using a combination of pultrusion and braiding processes.

Jute fiber was surface-treated with a silane coupling agent.

The mixing ratio of the fiber to the vinyl ester used in the HGJFRP composite bars was 7 : 3.

Jute fiber was used to replace glass fiber in proportions of 0, 30, 50, 70, and 100%.

The interlaminar shear stress decreased as the proportion of jute fiber increased.

Fractures appeared due to delamination between the surface-treated component and the main part of the HGJFRP composite bar.

Tensile load-strain curves with 50% jute fiber exhibited linear behavior.

With a jute fiber volume fraction of 70%, some plastic deformation occurred.

A jute fiber mixing ratio of 100% resulted in a display of linear elastic brittle behavior from the fiber; however, when the surface of the fiber was coated with poly(vinyl acetate), following failure, the jute fiber exhibited partial load resistance.

The tensile strength decreased as the jute fiber content increased; however, the tensile strength did not vary linearly with jute fiber content.