Cracks in concrete filled up

Cracks in concrete filled up at various stations

Over time, it is quite normal for small hairline cracks to appear in underground concrete works, and for these to result in water infiltrations. To remedy the situation and keep our stations dry, we inject different filling products in these cracks to seal them up.

In 2017, such injection work will be performed at these stations:

  • Guy-Concordia
  • Peel
  • Sherbrooke
  • Lionel-Groulx

The purpose of this operation is to make the station as watertight as when it was first built. Any water filtering inside will then be redirected to a drainage system.

In fact, as a way to complement crack-filling techniques, we are also channelling water infiltrations to gutters installed at ceiling level. To learn more about this type of installation, read the page dedicated to this topic.


This work is made possible through funding from the Ministry of Transportation, Sustainable Mobility and Transport Electrification.

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