Vaughan, Ontario
1994 - 2000
Two 660 meter long concrete strip footings support three large gantry cranes at the CP Vaughn Intermodal Terminal. The existing steel bearing plates between the footings and crane rail created a point-loading situation, leading to rapid and extensive cracking, deterioration and settlement.
The successful rehabilitation of the footings and underlying formation involved:
- site inspection and soils investigation.
- formulation and pouring of a vinyl-ester grout under existing and new bearing plates.
- crack injection with flexible, 2-component polyurethane elastomer.
- concrete patch repairs with cement based repair mortars.
- soil stabilization and drainage restoration using regular and microfine based suspension grouts.
- installation of micro-piles below the least stable sections of the concrete footing.
- Injection of microfine cement based grout and sodium silicate solution grout in critical areas under the footings to arrest settlement.
Due to the ongoing operation requirements of the terminal throughout, fast setting, high strength repair materials were required to provide a timely and uniform load transfer from the rails to the footing.
ECO was involved with the investigation, design and supervision of this project.