With the launch shaft constructed and the TBM on site at the Second Narrows crossing in Vancouver, NATJ asked the project team about the challenges that lie ahead.
Day: February 6, 2020
The use of hyperbaric interventions in Canada’s soft ground tunnels has come a long way in the last decade. ASI Marine’s Scott Black tells us how he thinks it could go further. By Kristina Smith.
Whether in North America or worldwide, the use of permanent sprayed concrete linings (SCL) is on the uptick. A new spate of research projects and working groups is aiming to standardize the specification and application of SCL, while innovative methods of testing work to increase durability of the concrete mixtures themselves.