the first phase of work to repair the Hammersmith Flyover before the
London Olympic Games in 2012, Freyssinet has been chosen again for
the second step. Work to strengthen the structure, with the bearings
replaced, a new carriageway drainage system installed and the entire flyover
waterproofed and resurfaced, has started in January 2014.
Freyssinet’s missions involve external post-tensioning, very long tendons and extensive use of Freyssinet products especially Cohestrand® and Freyssibar®. Freyssinet will also perform the precasting of concrete blisters in UHPFRC (Ultra High Performance Fiber-Reinforced Concrete) and installing them using specialist equipment developed with the methods department.
The use of UHPFRC as the key element in the new post-tensioning system is an innovation in the field of PT works. UHPFRC is used in this application for the first time in UK. The main benefit is the reduction in both size and weight of the concrete anchorage.
The work will be completed in summer 2015.
Inside the Flyover