Evaluation of Anchors for CFRP tendons

Status

Sequential Number

Matching Research Agency

Principal Investigator

Student Involvement

Project Objective

The objectives of the study are: (1) Fabricate mechanical wedge-type anchor systems for Aslan 200 CFRP rods; (2) Proof test the load carrying capacity of CFRP rods gripped with the anchor system.

Project Abstract

Carbon FRP (CFRP) reinforcement is a very promising alternative material in prestressed concrete structures. Acceptance of CFRP tendons in post-tensioned concrete applications is inhibited by the lack of a suitable anchor system to maintain the prestressing force in the reinforcement. The experimental data and experience on mechanical behavior of prestressing steel tendons and anchorages are abundant but cannot be used when developing FRP tendon-anchorage systems. A new anchor system was designed and developed at the University of Waterloo. In this project, anchors are fabricated based on the Waterloo design. The performance of the anchor system will be evaluated under short-term static loading to evaluate the anchorage efficiency for the CFRP tendons.

Anticipated Benefits

The project will lead to the fabrication and assessment of the Waterloo anchor system for CFRP prestressed rods. The new anchors will be used for a laboratory and field application project in Rolla utilizing CFRP tendons.

Modal Orientation

Milestones

Relationship to other Research/Projects

(1) Interfacial contact behavior of CFRP metal couples in Wedge anchor systems (PhD, Waterloo); (2) Externally prestressed beams with CFRP tendons, (PhD student Waterloo); (3) CFRP tendon anchor deviator systems (MASc Waterloo).

Technology Transfer Activities

Transportation Research Board Keywords