Steel Fiber Reinforced Concrete as Sustainable Material for Construction of Slab on Grade - Review

Slab on grade is a slab directly supported on the soil. Slab on grade is used for construction of industrial floor and rigid pavement. For construction of slab on grade, fibers mainly steel fibers are used with specified doses. Addition of the fiber in the slab on grade improved the ductility and post cracking nature of the load verses deflection curve. Area under load deflection curve is called toughness. Peak load of SFRC is higher than the plain cement concrete. Steel fibers are more appropriate to used in slab on grade that synthetic and polypropylene fiber. Non linear fracture mechanics of concrete between cracks is evaluated to understand the performance of the SFRC. Parametric study carried out to evaluate the effect of type of steel fiber, dose of steel fiber and load - deflection curve on the depth of the slab on grade. Some equations and charts are proposed for the calculation of dose of fibers based on loading criteria and minimum depth of slab on grade. Plastic method, yield line analysis and non linear fracture mechanics methods consider for analysis and design of slab on grade. Slab on grade should be sustainable to perform satisfactorily intended use and economical. To design slab on grade with minimum slab thickness and optimum dose of fiber based on serviceability criteria reflects sustainability construction approach.