Volume : 1, Issue : 5, October - 2012

Strengthening of structures using with Glass Fiber Reinforced Polymer Sheet

Deepa A Sinha

Abstract :

The use of externally bonded fie reinforced polymer sheet and strips has recently been effective as an effective tool for rehabilitating and strengthening reinforced concrete columns.This technology is efficient in improving flexural stiffness and strength as well as seismic response. Fiber reinforced polymer (FRP) composites can be considered a new class of construction material when comparedwith classical materials such as steel, concrete, timber and masonry. The relatively recent and growing interest in FRP in the domain of structural engineering can be traced to its advantageous properties ranging from a very high strengthto– weight ratio, electromagnetic neutrality, excellent fatigue behaviour, to superior durability including corrosion resistance. These properties have, in turn, lead to a oad spectrum of application that can be divided into two general categories: all–FRP members or structures in new construction or in the replacement of existing structural elements, and FRP components in the repair and rehabilitation of damaged or deteriorating structures. The mix design was carried out for M30 grade concrete as per IS: 10262–2009 which yielded a proportion of 1:1.86: 2.41 with a w/c ratio of 0.45. Cylinders were cast to find compressive &tensile strength. It was found that both compressive & tensile strength increases by wrapping with GRPF sheet.