Project description

Location: Athens
Year: 2014

Bridge expansion joints due to installation defects or aging, may lose their waterproofing performance. In such cases, their repair or replacement is essential in short time. Otherwise, extensive damages will appear in long term on the cap beams and piers, because of the water leakage and runs on the elements surface in many cases with the presence of antifreeze salts.

Tasks description

The circular columns of one of the piers of the airport flyover of Attiki Odos were found to suffer from extensive concrete cover deterioration and stirrups corrosion. The diameter of the columns is 1.2m and their height is 6m. In order to address the problems the following works took place:

  • Corroded reinforcement cleaning and protection with corrosion inhibitors, and local rehabilitation of the concrete section cement repair mortars per EN1504.
  • Confinement of the circular columns along their full height with several layers of Carbon Fiber Reinforced Polymers (CFRP).