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Published on: June 27, 2018
Strengthening of Existing Bridge Structures for Shear and Bending with Carbon Textile-Reinforced Mortar
Martin Herbrand1, Viviane Adam2, Martin Classen3
1Institute of Structural Concrete, RWTH Aachen University, 52056 Aachen, Germany. Martin.Herbrand@rwth-aachen.de.
Abstract:
Increasing traffic loads and changes in code provisions lead to deficits in shear and flexural capacity of many existing highway bridges. Therefore, a large number of structures are expected to require refurbishment and strengthening in the future. This projection is based on the current condition of many older road bridges. Different strengthening methods for bridges exist to extend their service life, all having specific advantages and disadvantages. By applying a thin layer of carbon textile-reinforced mortar (CTRM) to bridge deck slabs and the webs of pre-stressed concrete bridges, the fatigue and ultimate strength of these members can be increased significantly. The CTRM layer is a combination of a corrosion resistant carbon fiber reinforced polymer (CFRP) fabric and an efficient mortar. In this paper, the strengthening method and the experimental results obtained at RWTH Aachen University are presented.
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