Title:
Creep Poisson's Ratio of Concrete
Under Multiaxial Compression
Author(s):
K. S. Gopalakrishnan, Adam M. Neville, and Amin Ghali
Publication:
Journal Proceedings
Volume:
66
Issue:
12
Appears on pages(s):
1008-1019
Keywords:
biaxial stresses; combined stress:compressive strength; concretes; creep properties;creep recovery; Poisson‘s ratio; strains; stresses;triaxial stresses.
DOI:
10.14359/7451
Date:
12/1/1969
Abstract:
Creep data are presented for concrete under different states of stress, with each stress component independently controlled. Creep in all three principal directions is reported. Under multiaxial stress, cree is somewhat smaller than under uniaxial stress. Effective creep Poisson’s ratio under multiaxial stress is lower (0.09 to 0.17) than uniaxial creep Poisson’s ratio (0. I7 to 0.20) and depends on the relative magnitude of principal stresses. Empirical expressions for creep Poisson’s ratio are derived. Data on creep recovery show the dependence of creep recovery on preceding creep as well as on stress removed. Under multiaxial compression the recoverable proportion of creep is larger than under uniaxial stress.