Diamond Plaza – International Business Center

Xypex products were used to repair and waterproof a wide variety of places within this 22-storey building, including: screen wall coves along diaphragm walls, septic tank, 3 water tanks, 2 elevator pits, one electrical vault, machine room slab, bathrooms and laundry rooms.

During the construction of this mix use development, continuous pumping of ground water was terminated near the completion of the basement. The bentonite waterstop used at the foundation slab immediately failed under extreme hydrostatic pressure, and the basement was continuously flooded to knee height within every 15 minutes if pumping was stopped. Sixteen strategic pits over the finish slab were cut open to allow Xypex’s repair to the double slab to control the water flow between the double slabs. Concrete blocks pre-coated with Xypex Concentrate were set in place against continuous water flow using Xypex Patch’n Plug to contain the flow of water. The pits were then filled with new pours of mass concrete which was then coated with Xypex Concentrate, cutting off the water permanently. The repair was completed in the early part of 1998.