Fatigue behavior of geopolymeric concrete reinforced by polypropylene fibers

Fatigue behavior of geopolymer concrete reinforced by polypropylene fibers under cyclic loading has been studied here; the geopolymer source material was Metakaolin prepared by calcining Kaolin powder at ۷۵۰° C. A fatigue-three-point-bending test was carried out on the geopolymer matrix, plain and reinforced geopolymer concrete in order to examine growth of crack length generated after one loading cycle. The obtained results showed that the fibers not only enhanced fatigue life of the reinforced specimens but also decreased growth rate of fatigue crack length and damage rate.

Keywords:

Geopolymer , Reinforced concrete , Fatigue behavior