Polypropylene reinforcing fibres
Polymeric fiber for the control and structural reinforcement of concrete. The Polifer 420 fiber derives from a polymeric mixture of virgin polypropylene with additives, and treated for being used with the purpose of controlling and reinforcing concrete. With Polifer 420 fibre is possible to obtain excellent improvements to concrete because the high number of fibres present in the mixture form a micro-reinforcement that impedes shrinkage during the plastic phase, preventing the formation of micro-fissures, and noticeably improves the mechanical performances of concrete. Cement concrete with Polifer 420 fibre admixture is easy to pump with all types of pump and does not in any way damage either the pumping machinery or the spray nozzles, thus avoiding frequent, expensive maintenance. Outdoor concrete shows no sign of corrosion. Polifer 420 fibre can be distributed homogeneously in cement conglomerates without requiring specific procedures. Just empty the bags of Polifer 420 fibre into the concrete mixer vehicle (or the onsite concrete mixer) at intervals of about 30 seconds; after the last bag, leave it all to mix for about 5 minutes, with the concrete mixer on its maximum revs.