Analytical Study of Steel Fibre Reinforced Rigid Pavements Under Moving Loads

Nowadays, the application of steel fibers in concrete has increased gradually as an engineering material. The knowledge is not only necessary to provide safe, efficient and economic design for the present, but it also to serve as a rational basis for extended future applications. In this study, steel fibre reinforced rigid pavements are analyzed for stresses developed due to Moving loads & temperature differentials. Comparison of curling stresses in SFRC with conventional concrete is carried out. All the models are generated and analysis is carried out using the ANSYS software. Parametric study for the effect of change in slab length & slab thickness of pavements on curling stresses is also done. Curling stresses due to Linear & Non linear temperature distribution in top & bottom layer of SFRC pavement slabs are also calculated. Frictional stresses in SFRC due to uniform temperature differential are almost same as conventional concrete. Analysis results shows, SFRC develops more stresses as compared to conventional concrete & Non linear temperature distribution develops more stresses than linear temperature distribution. SFRC pavements are analyzed for Single axle moving loads for two different speeds. Results reveal that the loading stresses are higher, when the loads are at starting position of edge.