The addition of the fibres lowers the permeability of concrete, reducing bleeding of water. They also have the ability to mitigate the explosive tendency of concrete during fires, because they melt and relieve the volatile steam pressure. PFE Extrusion’s MFP concrete fibre is specially engineered for use as a secondary reinforcement, to control plastic shrinkage and settlement cracking. The additive should not be specified for crack control from external forces, to replace primary reinforcement such as structural steel or rods, to decrease the thickness of slabs or increase joint spacing.
MFP fibre is produced from homopolymer pellets, which are extruded to create a melt spun, round polypropylene cross section. The addition of various stabilisation systems, together with variations in cut length, provides flexible options on enquiry. A minimum quantity of one ton is applicable, with packaging in bulk cardboard boxes.
The following products are available in this category
MFP concrete fibre™
MFP concrete fibre™ is an advanced polypropylene straight multifilament fibre specially developed by PFE Extrusion for international markets. MFP fibre offers a fine decitex with high elongation and a relatively high crimp index, in two cut lengths depending on specifications. As the fibre can improve mix cohesion, the pumpability over long distances is enhanced. The fibre has a high level of abrasion and biological resistance, and is ideal for applications where water tightness is paramount. These include septic tanks, marine hydraulic structures, manhole cones and risers, and hazardous material storage. Applications where toughness and cracking resistance are specified include shotcrete, precast concrete products, floor slabs, pavements, bridge decks and architectural finishes. The fibre is inert, non-magnetic, and safe and easy to use.