Void Filling in Tunnel Liner at Eglinton Crosstown Project

Cement Grouting to Fill Voids Behind a Tunnel Liner

Location: Toronto, ON
Sector: Tunnels
Category: Cement Grouting, Soil Stabilization

Description

We provided soil stabilization services at the Eglinton Crosstown Project in Midtown Toronto.

The scope of work involved injecting cement grout around the tunnel liner to fill voids. Our solution involved a microfine cement grout mixture delivered through vertical injection pipes installed around the tunnel.

Microfine cement is able to penetrate very small openings such as soil pores and microscopic rock fissures, in order to improve strength and reduce permeability.