The study shows that a high creep response is observed
when the concrete is loaded within the first 24 h after adding
water to the dry materials. Bazant’s structural creep model
based on solidification theory [8] does not capture this
behavior. After an initial aging period of 3 days, the
response is far stiffer than the earlier ages. A simple
modification to the solidification creep model is proposed.
The proposed q5 parameter may be regarded as a structural
setting time.
The study also indicate that the creep response is not
proportional to the applied stress when the concrete specimen
is loaded at t 0 = 1 day.
Also, these experiments indicate that the rate of creep
after a short initial time after loading is constant regardless
of age at loading given constant initial stress/strength ratio.
Finally, it should be noted that this article only represents
limited amounts of experimental evidence, and the conclusions
should be regarded as preliminary. More experiments
are needed for confirmation of the results.