ABSTRACT
The Stanley Park Seawall is a 10 km long combined walkway and cycle path along the oceanfront in Vancouver, BC, Canada. It was constructed of granite masonry and mortar with an asphalt pavement surface over a 53 year period, commencing in the early 1920’s. Most of the seawall is subjected to tidal action and waves on a daily basis. This has resulted in scour and undermining of the seawall in many places and partial collapse in some places. This paper presents an overview of remedial works undertaken to rehabilitate the seawall. The work primarily comprised underpinning undermined portions of the seawall. It was conducted in the inter-tidal region, using a silica fume modified, washout resistant, wet-mix shotcrete. The shotcrete incorporated 5 kg/m3 of a synthetic macrofibre for improved stability in the freshly applied shotcrete and enhanced crack control, toughness, and impact resistance in the hardened state. The work was successfully completed on time and in budget under challenging conditions of access, public scrutiny, and environmental restrictions.
