Change Order – A Publication of the Construction Specification Institute (Chicago Chapter) – April 2005
A worldwide patent for a new innovative waterstop application is currently pending. The system, known as the Krystol Waterstop System™ replaces conventional waterstop barriers, saving construction time and costs while providing two lines of defense to protect construction joints.
“When it comes to waterproofing, the joint between concrete pours are particularly vulnerable,” said Leo Connell, Marketing Director of Kryton International. Traditionally, construction joints are sealed using PVC waterstops, bentonite strips or swellable urethane. However, these systems are difficult to install and can easily become dislodged or damaged during concrete pours, leaving joints susceptible to leakage. More than just a physical barrier, the Krystol Waterstop System is based on Kryton’s proprietary Krystol technology, which eliminates many of the challenges associated with joint design and waterproofing.”
The Krystol Waterstop System uses two cementitious, Krystol-based products. A 5-cm wide, 3-cm (2″x l”) high triangle-shaped strip of Krystol Waterstop Grout™ is created along the edge of a concrete slab or wall at the site where a new wall is to be poured. Once the grout has cured, Krystol Waterstop Treatment™ is applied and the concrete wall can be poured as normal.
Both products contain Krystol, an integral crystalline waterproofing compound that is proven to waterproof concrete from the inside out, replacing conventional external membranes and waterstop systems. When mixed with I applied to concrete, Krystol chemicals react with water and unhydrated cement to form microscopic crystals that seal the spaces between concrete particles and permanently block water penetration from all directions. In addition, a second line of defense is created when the Krystol Waterstop Grout hardens to achieve a high strength physical barrier.
For more information about the Krystol Waterstop System, visit www.kryton.com or call (800) 267-8280.