The Kaiser Sunnyside Medical Centre is the largest full-service hospital in Clackamas County with over 14,000 patient admissions a year. In building the first phase of a three-story, 700 space above grade parking garage, the project team applied a traffic membrane to waterproof the exposed concrete decks to protect the reinforcing steel and post tensioning cables used in the suspended slabs.
However, the application process proved to be difficult and costly as areas of the traffic deck coating kept delaminating – challenges with the coating system had to be addressed several times before it was considered satisfactory. When faced with protecting the exposed decks on the second phase of the garage, the project team sought a faster, reliable and more cost-efficient solution that would not involve the potential for areas of unexplained delamination.
The project team turned to the Krystol Concrete Waterproofing System, a worldwide leader in crystalline waterproofing technology. The protective traffic membrane system they had originally implemented on the exposed parking decks on the first half of the garage was costly, labour intensive and vulnerable to human error. But by utilizing Kryton to protect the exposed concrete decks on phase two of the garage, the team would not only have the world’s leading crystalline waterproofing technology to protect the structure, but they would also save a substantial amount of time and money. Krystol Internal Membrane or KIM cost was less than $22.75 per square meter ($2.25 per square foot) over installing a traditional traffic membrane system. The Krystol system is an integral, permanent part of the concrete and allows the owner to save the life cycle costs that are included with the eventual reapplication of a traditional membrane system.
The Krystol Concrete Waterproofing System at the Kaiser Medical Center included 1828.80 metres (2000 yds) of Krystol Internal Membrane HS (KIM-HS), an admixture suitable for new concrete construction. The Krystol Concrete Waterproofing System will prolong a structure’s life, since Krystol does not deteriorate – it is guaranteed to last the lifetime of the structure.