Infrastructure retrofit using design composite mechanics

Selected applications are described to illustrate the concept for retrofitting reinforced concrete structures with fiber reinforced plastic laminates. The concept is first illustrated by using an axially loaded reinforced concrete column. A reinforced concrete arch and a dome are then used to illustrate the versatility of the concept. Advanced methods such as finite element structural analysis and progressive structural fracture are then used to evaluate the retrofitting laminate adequacy. Results obtained show that retrofits can be designed to double and even triple the "as-designed" load of the selected reinforced concrete structures.