VSL’s VSLAB+® Bonded Slab System consists of fully encapsulated, bonded multistrand (two to five strands) tendons contained in flat plastic ducts filled with a high-performance cementitious grout that bonds the strands to the surrounding concrete. Intermediate anchorages provide continuous encapsulation at construction joints. Tendons are protected by both PT-Plus™ plastic duct and grout.
These bonded multistrand systems have been successfully applied to commercial building, healthcare and parking garage construction by VSL. Benefits include enhanced crack and deflection control and a reduction in reinforcing steel. VSLAB+ allows for thin slab design—reducing overall building height which lowers costs for foundation, frame and facade/cladding components. Because bonded tendons may be cut with only localized loss of capacity, another significant advantage of VSLAB+ is the ease of future building modifications. Design advantages include increased span lengths and load-carrying capacities.
Additionally, the reduction of mild reinforcing steel minimizes the primary sources of corrosion and significantly reduces life cycle maintenance costs.