Pittsburgh, Pennsylvania - Sound barriers designed to cut noise in residential communities near motorways have traditionally been made with concrete, either poured-in-place or pre-cast slabs. An alternative from Centria of Moon Township, Pennsylvania, is innovative cost-effective, eco-friendly and lightweight composite barrier that uses Baytherm polyisocyanurate foam from BaySystems.
Advantages of the Centria Sound Barrier are that it is safer, lighter, faster to install and requires less maintenance than pre-cast concrete barriers. Also, Centria Sound Barrier, is less than one-third the cost of traditional barrier materials and is eco-friendly, with up to 25 percent recycled content. The barrier is 100 percent recyclable at the end of its useful life, Centria claims.
The panels have a medium-density PIR foam core, clad with metal skids that are painted for added durability. The finished sound barrier requires virtually no maintenance after installation.
"We worked closely with Bayer to determine the right combination of materials to achieve an end product that performed as well as a traditional sound barrier, but was easier to install, safer for cars and came in at a fraction of the cost," said Rick Mowrey, director of marketing and business development, Centria.
BMS said the first Centria Sound Barrier was installed at mile marker 7.3 on the Pennsylvania Turnpike at Enon Valley, Pennsylvania, in May 2008. This project used 500 panels covering 24 000 feet (11 340 m), but no lanes were closed during the delivery and installation. Typical highway barriers often requires weeks of road closures so that heavy-duty trucks can move barriers into place.
The Enon Valley installation required only six trucks to ship materials and about 30 minutes to unload. Panel installation was completed within five days.
"Using traditional pre-cast barriers for this project would have required the use of 45 trucks to transport materials and taken four weeks to install," said Mowrey. "The Centria Sound Barrier has proven to be a cost effective and logistically efficient option to traditional costly and time-consuming sound barrier materials."