This product is a kind of micro polypropylene fibers which is added to concrete mixture as additive in order to control cracks. This material is available into one strand and in two sizes. The 12 mm kind is for concrete mixtures which have fine grains larger than 5 mm and the 6 mm is used for plaster and mortar. This fiber is used for preventing from formation of crazes due to concrete shrinkage, early drying and early temperature oscillations.
