Smart Composite Rebars with Enhanced Ductility

Abstract

A new concept for enhancing ductility in fiber-reinforced-plastic (FRP) composite reinforcing bars (rebars) is evaluated. A hybrid composite system, consisting of several brittle fibers of different stiffnesses and ultimate strains, behaves as an elastic-pseudo-ductile material. The fibers with high stiffness are laid longitudinally in the resin matrix to control the elastic modulus and the yield stress. The fibers with low stiffness and higher breaking strains are wound helically around the rebars to increase the ultimate elongation of the system and to serve as rebar protrusions for bonding to concrete. In addition, these composites offer 'smart' capability in which embedded sensors provide health monitoring and micro-damage assessment of rebars and thus the reinforced concrete structures.

Department(s)

Civil, Architectural and Environmental Engineering

Second Department

Mechanical and Aerospace Engineering

Third Department

Electrical and Computer Engineering

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 The Authors, All rights reserved.

Publication Date

01 Jan 1996

This document is currently not available here.

Share

 
COinS