Bond strength of FRP bars in concrete and the effects of FRP bars at elevated temperatures on concrete cover

Author

Bryan Lee Vollintine

Abstract

"There are two parts to the research for this thesis, one of bond characterization and the other of thermal cracking. Both parts were tested using the pull-out method. This type of testing is used to calculate the shear strength of the concrete-FRP interface. Currently the increasing demands to use fiber-reinforced polymer (FRP) as the primary reinforcing agent in reinforced concrete members is primarily due to the premature corrosion of the steel reinforcement. This raises the need for more to be known about the bond mechanics of these new materials.

The specimens tested for the bond characterization were concrete cubes with the bar centrally placed. The object of these tests was to calculate the bond strength. Bond strength is used in the designing of new reinforced concrete structures. The bond strengths were calculated for different embedment lengths.

The specimens for the thermal cracking tests had varying levels of concrete cover over the bar. The major goal of the thermal cracking tests was to determine if current standards for concrete cover are sufficient to prevent bond degradation at elevated temperatures. FRP has a coefficient of thermal expansion (CTE) 3 - 6 times higher than concrete's. This could cause the possibility of rupture of the concrete cover at elevated temperatures"--Abstract, p. iii

Advisor(s)

Dharani, Lokeswarappa R.
Nanni, Antonio

Committee Member(s)

Chandrashekhara, K.

Department(s)

Mechanical and Aerospace Engineering

Degree Name

M.S. in Engineering Mechanics

Publisher

University of Missouri--Rolla

Publication Date

Spring 2003

Pagination

xi, 54 pages

Note about bibliography

Includes bibliographical references (page 53)

Rights

© 2003 Bryan Lee Vollintine, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Subject Headings

Reinforced concrete
Fiber-reinforced plastics
Strength of materials
Thermal stresses

Thesis Number

T 8258

Print OCLC #

53224884

Recommended Citation

Vollintine, Bryan Lee, "Bond strength of FRP bars in concrete and the effects of FRP bars at elevated temperatures on concrete cover" (2003). Masters Theses. 2325.
https://scholarsmine.mst.edu/masters_theses/2325