Pull-out strength of an expansion stud anchor in carbon fiber reinforced concrete

College

Gokongwei College of Engineering

Department/Unit

Civil Engineering

Document Type

Article

Source Title

International Journal of GEOMATE

Volume

12

Issue

31

First Page

1

Last Page

8

Publication Date

1-1-2017

Abstract

Carbon Fiber Reinforced Concrete (CFRC) is considered as an innovative structural material because of its better performance characteristics when compared to conventional concrete. Its common applications where expansion stud anchor connection is possible are in slabs on grade, wall panel, curtain walls, and pre-cast elements. The design of this stud anchor in CFRC is of great interest to many structural engineers, however, no model is available as basis for its design. To develop such model, this study investigated the pull-out strength of an expansion stud anchor embedded in CFRC as influenced by fiber volume content (Vf), fiber length (Lf), compressive strength and tensile strength. Three compression, three tension, and five pull-out CFRC specimens each of different Vf (0.10%, 0.15%, 0.20%, 0.25%, 0.30%) and different Lf (19 mm, 30 mm, 38 mm) were prepared, tested, analyzed, and compared to control concrete specimens at design compressive strength of 21 MPa. Tests results show that pull-out strength of an expansion stud anchor in CFRC is maximum at Vf = 0.10% and Lf = 38 mm. Among the parameters considered, tensile strength is the most significant contributing factor that could influence the pull-out strength of stud anchor in CFRC. This is further verified numerically by a FEM model with good agreement to the observed tensile strength. Finally, a Response Surface Methodology (RSM) model is proposed to predict the pull-out strength of an expansion stud anchor embedded in CFRC as influenced by the fiber volume content, fiber length, compressive strength, and tensile strength. © Int. J. of GEOMATE. All rights reserved.

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Digitial Object Identifier (DOI)

10.21660/2017.31.6530

Disciplines

Civil Engineering

Keywords

Carbon fiber-reinforced plastics; Strength of materials

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