Date of Award
Spring 1997
Document Type
Thesis - Restricted
Degree Name
Master of Science (MS)
Department
Civil Engineering
First Advisor
Wenzel, Thomas H.
Second Advisor
Foley, Christopher
Abstract
The effects of high strength concrete on the development of bond between conventional mild steel and concrete was examined in this thesis. An experimental study was conducted to determine the bond stress and slip between the high strength concrete and the reinforcement. Bond stress values were determined and compared to determine the effects of high strength concrete. Bond stress affects the development length of mild steel reinforcement. Development length as determined by the equations in ACI 318-"Building Code Requirements for Structural Concrete (ACI 318-95) and Commentary (ACI 318R-95)" [1] is limited to a concrete strength of 10,000 psi. With the expanding use and availability of higher strength concrete, there is a need to determine if the current code equations are still valid. In the experimental study, the bond stress and slip of reinforcement cast in concrete strengths varying from 6,000 psi to 14,000 psi was investigated. Pullout tests were conducted using #4 and #6 bars on vertically cast specimens and also on top and bottom cast specimens. Curves were constructed using the data collected from the experiments. Bond stress values are compared for the different mixtures and comparisons are made at a constant slip rate and at the critical bond stress. Conclusions are made concerning the effects of high strength concrete on the development of bond for mild steel reinforcement.
Recommended Citation
Rosner, Jeffrey S., "Bond Strength of Mild Steel Reinforcement in High Strength Concrete" (1997). Master's Theses (1922-2009) Access restricted to Marquette Campus. 4022.
https://epublications.marquette.edu/theses/4022