Structural Grouting Using Permeation Grouting Techniques for the rehabilitation on the historical locks on the Rideau Canal, Ontario

ECO’s involvement in the design and supervision of successful grouting projects on the Rideau Canal is extensive, and includes treatment of the following locks and water retaining structures:

• Ottawa Locks 6, 7 and 8
• Hartwells Locks 9 and 10
• Upper Beveridges Locks
• Kingston Mills Locks
• Old Slys Lock
• Chaffeys Waste Weir
• Edmund’s Waste Weir

These projects involved installing grout curtains in limestone block walls backed with rubble mortar. The goal of these programs was to enhance structural integrity and reduce permeability. Due to the historic nature of the Canal, preservation of the structures was of paramount concern. The projects were further challenged by the in-situ conditions encountered, often comprising deteriorated mortar with high matrix permeability, and silt or calcite filled voids

Regular and microfine cement grouts were employed with MPSP injection systems. Injectable tube systems were used to seal cold joints in the concrete backing new limestone blocks in, locks requiring re-facing.