The Circuit Gilles Vileneuve has had new tarmac laid at the places where it broke up during its last Formula 1 event in 2008.
Turn two (the Senna hairpin), turns six and seven and turn ten (the Casino hairpin) all suffered a lot of damage during the qualifying session for the 2008 race.
They were patched up with quick-drying cement overnight but that didn’t prevent the problem recurring during the race. The track had also broken up in 2007.
Part of the problem is the harsh Canadian winter which weakens the tarmac. Past occasions when F1 races were been disrupted – even postponed – by tracks breaking up include the 1984 Dallas Grand Prix and 1985 Belgian Grand Prix.
The track also has new tarmac run-offs at turns six and eight for this year’s race.