Journal Published Online: 16 February 2010
Volume 38, Issue 4

Effect of Variations in Practice of ASTM D7522 Standard Pull-Off Test for FRP-Concrete Interfaces

CODEN: JTEVAB

Abstract

The recently promulgated ASTM D7522 Standard Test Method for Pull-Off Strength for FRP Bonded to Concrete Substrate provides a method for quality control and acceptance testing of fiber reinforced polymer (FRP) systems adhesively bonded to a concrete substrate. In the process of developing ASTM D7522, a number of comments and questions were received—some were incorporated as best practices and some were tabled, requiring further investigation. The present study addresses the latter issues and thereby directs future amendments of the ASTM D7522 standard method. Specifically, this study addresses the effects of specimen shape, the effects of variation in specimen cut depth, methods of cutting square specimens, and the impact of retesting specimens that do not fail during their initial test. It is shown that square specimens should be permitted although their results may not be directly compared with round specimens and they may have some other practical considerations affecting their use. Additionally, it is shown that cutting too deeply into the concrete substrate results in lower values of pull-off strength.

Author Information

Eveslage, Troy
Dept. of Civil Engineering, Rose Hulman Institute of Technology, Terre Haute, IN
Aidoo, John
Dept. of Civil Engineering, Rose Hulman Institute of Technology, Terre Haute, IN
Harries, Kent
Dept. of Civil and Environmental Engineering, Univ. of Pittsburgh, Pittsburgh, PA
Bro, William
Dept. of Mechanical Engineering, Rose Hulman Institute of Technology, Terre Haute, IN
Pages: 7
Price: $25.00
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Stock #: JTE102682
ISSN: 0090-3973
DOI: 10.1520/JTE102682