The Plastic Composite Ties in Brazil Challenges and Solutions in large scale installation

摘要

The studies for application of plastic composite ties in Brazil started in 2004. The choice of plastic composite was based on an alternative to existing wood ties. The main questions for this decision were related to the adaptability of existing equipment maintenance, installation and better LCC when compared to wood. The technology and manufacturing process would be similar to existing in USA. The first recommendation of the AREMA Subcommittee 30 (6) was to follow in general the tests indicated for concrete tie. Currently it is known that most of the tests and trials for approval of concrete tie has no meaning or indexes directly applicable to plastic composite ties. In early 2007, an extensive program of field tests with the installation and monitoring 1,800 plastic composite ties produced by four Brazilian manufacturers in activity is initiated. In 2010 a project for the acquisition, installation and monitoring 60,000 plastic composite ties is started. This work will present the performance analysis of plastic composite sleeper as well as the limitations / restrictions on the installation in heavy haul lines. Procedures that ensure optimum performance even in larger scale of application and manufacturing will also be presented.