Tuesday, November 12, 2013

Cutting concrete with water?

As part of the 2/5 Connector Repair Project, fire damaged concrete has to be removed from the walls, support columns, and ceiling (soffit).

As you can see in the video and pictures, our contractor is using a hydrodemolition or hydroblasting machine which blast a 20,000 psi (pound per square inch) jet stream of water.  This machine can safely remove damaged concrete without affecting the structural integrity of the connector tunnel.

Workers on site said that this machine can produce enough water pressure (even more than 20,000 psi) to cut through steel – amazing!

The intense heat from the tanker fire on July 13 caused extensive damage to the pavement, walls, support structures, drainage, and lighting within the northbound SR-2/northbound I-5 connector tunnel, requiring it to be closed.