Study on the Applicability of Short Fiber Reinforced Concrete to Precast Concrete Slabs for Slab Track

Abstract

Recently, concern has been raised about rebar corrosion of precast concrete slabs. There is strong demand for durable precast concrete in the railway operators, and to meet this requirement, the authors have proposed applying the short fiber reinforced concrete without rebar to precast concrete slabs. In order to identify the effectiveness of the proposal, the influence which the kind and the amount of mixing of the fiber on the flow property and the bending toughness of concrete was examined. Furthermore, analytical and experimental study on the bending fatigue was carried out. The results of the experiment had good agreement on those of the analysis, and we were able to demonstrate the behavior of the fracture process in the concrete.