Probabilistic Analysis of Fatigue Life of Polymer Concrete

Abstract

In this paper, probabilistic analysis of fatigue life of polymer concrete has been carried out with the intent to study its fatigue-life distributions using Weibull distribution. Three-point flexural fatigue tests were conducted on polymer concrete specimens of size 40 × 40 × 160 mm using MTS Servo-controlled actuator to obtain the fatigue lives at different stress levels. It has been observed that the probabilistic distribution of fatigue life of polymer concrete, at a particular stress level, can approximately be modeled by two-parameter Weibull distribution, with statistical co-relation coefficient values exceeding 0.90. Kolmogorov-Smirnov goodness-of-fit test has also been used to reinforce the above findings. The variability in the distribution of fatigue life of polymer concrete has been observed to be higher at lower stress levels compared to higher stress levels.