Evaluation and Epoxy Injection Repair of the Pier B-C Structure at Canada Place, Vancouver, B. C. 3 Canada


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Title: Evaluation and Epoxy Injection Repair of the Pier B-C Structure at Canada Place, Vancouver, B. C. 3 Canada

Author(s): G. K. Gunnyon and D. R. Morgan

Publication: Special Publication

Volume: 93


Appears on pages(s): 507-524

Keywords: chlorides; concrete durability; concrete piles; corrosion; epoxy resins; evaluation; harbor structures; renovating; repairs; shotcrete

Date: 9/1/1986

The Pier 6-C structure in the inner harbour area of Vancouver was selected as the site for construction of the Canada Place Trade and Convention centre. The project includes a five-berth cruise ship facility and a major 514 room hotel. The original Pier B-C was constructed by Canadian Pacific Railway between 1923 and 1927, and consisted of a central berm projecting 330 m (1080 ft.) from the shore, surrounded by a reinforced concrete deck supported by approximately 6000 precast reinforced concrete piles driven into the berm. A detailed assessment of the structure showed that it was suitable, after rehabilitation of deteriorated areas, for use as the substructure for the Canada Place project. As construction progressed substantial additional damage was done to the pier because of movements caused by installation of additional pre-cast concrete piles and steel caissons to support the new structures. This paper describes the original assessment of the pier structure, evaluation of construction damage, and preparation of repair specifications. While extensive repair by shotcreting procedures was required, this paper concentrates on the epoxy injection repair aspects of the remedial work. Epoxy injection was used to achieve structural repair of reinforced concrete beams, piles, pilecaps, seawalls and deck slabs.