Title:
Effect of Vibration Amplitude on Concrete with Damping Additives
Author(s):
Adam G. Bowland, Richard E. Weyers, Finley A. Charney, Norman E. Dowling, Thomas M. Murray, and Andrei Ramniceanu
Publication:
Materials Journal
Volume:
109
Issue:
3
Appears on pages(s):
371-378
Keywords:
admixtures; damping; energy; latex; rubber.
DOI:
10.14359/51683828
Date:
5/1/2012
Abstract:
An experimental study was performed to investigate the effects of ground rubber, styrene-butadiene rubber latex, vegetable gum latex, and calcium carbonate on the material damping of concrete. The additives were introduced by volumetric replacements of fine aggregate up to 15%. Damping comparisons are made on the basis of specific damping capacity measured from cyclic loading tests of concrete cylinders. The results show that the highest tested concentration of vegetable gum latex more than doubles the specific damping. Also, the amount of specific damping for all mixtures is shown to be dependent on the amplitude of cyclic strain, a property not associated with viscous damping.