Vol. 2, Issue 6 (2017)
An investigation on the flexural strength of retrofitted RC slabs with polypropylene fibre reinforced polymers (PPFRP)
Author(s): Shubhalakshmi BS, HN Jagannatha Reddy
Abstract: Fibre reinforced polymers (FRPs), commonly used in aerospace and defense industries have emerged as a feasible alternative for structural retrofit from the last few decades. Advantages of FRPs are light weight, high strength, resistant to corrosion and ease of application have made them popular in the up gradation of structural elements. Extensive work has been done on the concrete specimens of slabs, in the experimental and analytical fields since the development of FRP. Polypropylene fibers are micro reinforcement fibers and are 100% virgin homo polymer polypropylene graded monofilament fibers. They contain no reprocessed Olifin materials. This work investigates the effect of flexural strength of the slabs wrapped with and without PPFRP fabric. Four reduced modeled slab specimens were casted and tested under static loading conditions, two specimens were retrofitted with PPFRP in the form of cross wrapping at flexure zone and remaining two were normal reinforced concrete slab specimens. An increase in the flexural strength was observed.