Brittle Creep Failure, Critical Behavior, and Time-to-Failure Prediction of Concrete under Uniaxial Compression

Figure 6

Axial strain versus time curves of four concrete specimens at the creep phases from to failure under a constant applied stress. (a) Sample CS1; (b) sample CS2; (c) sample CS3; (d) sample CS4. The curves show the three typical stages of brittle creep: (1) primary (transient) stage characterized by an increasing strain with deceleration, (2) secondary stage, and (3) tertiary stage characterized by accelerating creep.

(a)

(b)

(c)

(d)