High-Performance Tiles for High-Impact Areas
Agrob Buchtal / DSA is the only remaining manufacturer offering white bodied, keyback tunnel tile. Our Chroma2 glazed ceramic keyback tiles have been used on tunnels around the world. In the US alone, tunnels have been designed with 4 1⁄4 x 4 1⁄4”, 5×10” and 8×8” sizes. DSA products were used in the Lucius J. Kellam, Jr. Bridge Tunnel across the Chesapeake Bay near Norfolk, VA, and the Wheeling Tunnel in WV.
Passing through the Ko‘olau Range on the island of O‘ahu, Hawaii, four tunnels have Chroma2 tile. The twin H-3 Tetsuo Harano Tunnels are each 5,165-foot-long, and the pair of John H. Wilson Tunnels on Likelike Highway (Route 63), are each 2,800 feet long.
The special keyback profile is required for structural purposes as it relates to vibration and impact in a tunnel environment. The keyback provides a mechanical bond, in addition to the chemical bond of mortar that affords engineers a comfort factor over traditional tile. In addition, Chroma2’s properties can meet the stringent requirements set forth by the State Departments of Transportation and other governmental concerns, such as bond strength, color measurement, glaze hardness and water absorption.
H-3 Tetsuo Harano Tunnels O’ahu, Hawaii – 400,000 Sq/Ft CHROMA2 Glazed Tunnel Tile