ABSTRACT
Parafil ropes have several features which distinguish them from most other prestressing systems; they cannot be bonded to concrete; they contain no resin, and they were not initially developed for prestressing. Nevertheless, they have been used for prestressing concrete on a number of occasions, and have recently been adopted by one of the largest manufacturers of prestressing systems (VSL) as an alternative to steel tendons when corrosion is likely to be a problem.
