Effect of Loading Rate on Bond Behavior Under Dynamic Loading


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Title: Effect of Loading Rate on Bond Behavior Under Dynamic Loading

Author(s): Cheng Yan and Sidney Mindess

Publication: Special Publication

Volume: 175


Appears on pages(s): 179-198

Keywords: bonding; dynamic loads; failure; reinforced concrete; stresses; tests

Date: 12/1/1998

The bond between deformed reinforcing bars and concrete under pull-out and push-in loading was studied under dynamic loading for plain concrete, polypropylene fibre reinforced concrete, and steel fibre reinforced concrete. A universal testing machine and an instrumented drop weight impact machine were used to generate static, medium rate, and impact loading, which covered a bond stress rate ranging from 0.5 x 1 O-8 to 0.5x 10-2 MPa/s. The stress distributions in both the steel and the concrete, the bond stresses and slips, the bond stress-slip relationships, and the fracture energy in bond failure were investigated. It was found that loading rates had a significant influence on these parameters.