Corrugated metal pipes (CMPs) have been used as culverts in North America since the 1950s.Today, corrosion of CMPs is a major problem that requires an urgent and efficient solution to retrofit thousands of corroded CMPs across the country.One potential solution gaining wide acceptance is to use a fit-in Glass Fiber Reinforced Polymer (GFRP) liner inside the old CMPs and to connect them using polymer grout.In this paper, a methodology to retrofit corrugated metal culvert using a fit-in GFRP profile liner was ice blue graphic tee developed and implemented.First, material characterization of the GFRP material and the epoxy grout were carried out for proper design of the retrofit system.
Second, full-scale CMP-GFRP composite section was tested under three-point bending configuration to observe the caruso rhodiola retrofitted culvert behavior to failure.The new CMP-GFRP section develops full composite action and shows failure capacity of 75 kip with a deflection of 3.52 in at the end of the test.Post failure of the polymeric grout, GFRP pipe failure was observed at mid-span location starting on the tension side.A finite element model was developed to understand the behavior of the CMP-GFRP composite pipe and to allow for the efficient design of the proposed retrofitting system.