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Title: Compression Fatigue Properties of Pervious Concrete

Author(s): Kai Jiao, Chen Chen, Lei Li, Xun Shi, and Yong Wang

Publication: Materials Journal

Volume: 117

Issue: 2

Appears on pages(s): 241-249

Keywords: fatigue deformation characteristics; fatigue life equation; fatigue properties; fatigue residual strength; loading frequency; pervious concrete (PC)

Date: 3/1/2020

To promote the application of pervious concrete (PC) in heavy-duty pavement engineering, a thick plate (approximately 50 to 100 cm) paving structure can be used, and its failure form mainly by fatigue compression. Therefore, compressive fatigue tests were carried out under fatigue loads in four stress levels (S): 0.6, 0.7, 0.8, and 0.9, at three loading frequencies of 10, 15, and 20 Hz. The results showed that the fatigue life (N) and fatigue residual strength are controlled by S, while loading frequency showed no statistically significant effect on them. The fatigue failure of PC will not occur under a stress level of 0.6. The survival rate of PC and the fatigue life of uniaxial compression obey a Weibull distribution with two parameters. The material constants of uniaxial compression fatigue of PC are 0.0464 to 0.052, which are similar to ordinary concrete. There are two forms of fatigue failure: one is the shearing along the vertical central axis and the other is shear failure at an angle of 15 to 30 degrees with the vertical central axis.


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