Primix has developed a sleeper comprising a steel and concrete core surrounded by a composite shell. This extruded shell is made from recycled polyethylene, sourced from domestic plastic containers and mixed with crumb rubber obtained from spent vehicle tyres and a proprietary Primix binding agent.
As well as offering a recycled alternative to hardwood, the composite sleeper is 230% stronger than this material according to its manufacturers, and has vibration and sound damping properties. Primix also says that its product has a service life three times longer than wood or concrete, and does not crush ballast. The sleeper is available for main line, heavy haul or industrial applications.
Primix Corp, USA
Reader Enquiry Number 141