FIELD: chemistry.
SUBSTANCE: invention relates to the technology of production of polymer fibres, in particular, polypropylene fibres, which can be applied as a reinforcing for cement, gypsum, concrete, etc. The fibre is obtained by moulding from a melt and further processing by ionising radiation. The fibre is 0.1-40 mm long, has a diameter of 5-170 mcm and the melt flow index higher than 500 g/10 min, measured in accordance with DIN EN ISO 1133.
EFFECT: application of the obtained fibres provides an increase of fire resistance of the concrete products.
5 cl, 1 tbl, 1 ex
