Existing Construction & Repair

Background The Toronto International Airport required waterproofing for a 855 meter (2,800 foot) long utility tunnel carrying vital electrical and communication lines 20 meters (66 feet) below grade. Solution Krystol Crack Repair System was applied against a significant hydrostatic pressure to stop inside running water penetrating through the utility tunnels cold joints. All cold joints were chiseled … Read More

Background When deciding on a product to use to waterproof your concrete, you need to look at many characteristics and aspects of the purchase, not just the price. A waterproofing company must be able to provide a product that performs in the manner intended, save you time in the construction phase, offer a superior warranty, … Read More

Background The Zhangjiang Hi-Tech Park located in Shanghai is a large technology park with over 110 research and development institutions and over 300 companies including large multi-nationals such as Citibank and SAP.  At this particular building in the technology park, the originally installed waterproofing membrane had failed and leaks inside the walls were a problem. … Read More

Background The bridge chamber, situated 3 meters (10 feet) below the water table, was constructed out of high quality concrete. It started to have a problem with alkali reactions due to the aggregate in the concrete, and also had leaking problems. A new 30 centimeter (11.8 inch) slab constructed on the original slab also started leaking. Solution … Read More

Background In 1985 the 10.8 kilometer (7 mile) stretch of Hanzomon Subway was constructed several meters below grade. During initial construction a 1” (2.5 cm) rubberized sheet membrane was installed as specified by engineers to provide the waterproofing protection required. Within one year the membrane system had failed in several places and was allowing water to … Read More

Background Several water containment vessels on Oahu Island of Hawaii are susceptible to demanding conditions as the UV rays from the tropical sun quickly deteriorates membranes. As well, earthquakes and constant ground settling causes cracks which allow water to leak. Several waterproofing systems were previously attempted with no long-term success. Solution The Krystol T1 & T2 … Read More

Background The corrosion of reinforced concrete is a significant problem affecting concrete infrastructure, leading to deteriorating concrete structures around the world. Largely attributed to the corrosion of steel reinforcement, concrete structures built to last 50 to 100 years routinely need substantial repairs and rehabilitation during their service life. The continuous repair and rehabilitation of concrete … Read More

Background The 500 meter (1600 feet) long outflow tunnel of the Strydom Dam developed severe leakage problems 45 meters (150 feet) below the waterline. Several attempts were made to repair the leaking concrete with repair materials from both Europe and United States. However, all attempts failed to stop the leakage due to tremendous hydrostatic water pressure. Solution In … Read More