Loading...
Preliminary Study of the Effect of Revibration on Concrete-Steel Bond Strength
Altowaiji, Wisam A. K. Darwin, David Donahey, Rex C.
Altowaiji, Wisam A. K.
Darwin, David
Donahey, Rex C.
Citations
Altmetric:
Abstract
The effects of revibration on concrete-steel bond strength are studied. Key variables are concrete slump, bleed, bar position, and the time interval between initial vibration and revibration. lt8 deformed reinforcing bars were used with a 2 in. cover and a 10 in. bonded length. Concrete slumps ranged from 2-3/4 in. to 7-1/2 in. Two specimen depths were used. All specimens were modified cantilever beam specimens. The experimental results show that revibration is not universally beneficial to concrete steel bond. Revibration appears to improve bond strength for top-cast bars placed in high slump concrete. Revibration may, however, severely damage bond strength for bars cast in well consolidated, low slump concrete. Revibration is almost universally detrimental to the bond strength of bottom-cast bars. Overall, revibration tends to reduce the differences in bond strength caused by differences in slump and bar position.
Description
Date
1984-11
Journal Title
Journal ISSN
Volume Title
Publisher
University of Kansas Center for Research, Inc.
Research Projects
Organizational Units
Journal Issue
Keywords
Citation
Altowaiji, W.A.K., Darwin, D., Donahey, R.C., "Preliminary Study of the Effect of Revibration on Concrete-Steel Bond Strength," SL Report 84-2, The University of Kansas Center for Research , Inc., Lawrence, KS, November 1984, 32 pp.