| 摘要 |
FIELD: construction. ^ SUBSTANCE: fibre has an average diameter from 0.15 to 2.0 mm, is double-component of core/shell type and is made of polyolefines or other thermoplastic polymers. The fibre is produced by coextrusion with drawing ratio from 5 to 15. On completion of drawing the fibre has surface, which is structured or corrugated continuously or with intervals. Depth of structuring makes more than 10% of the average fibre diameter, and the maximum distance between tops in the formed structure in axial direction makes from 0.5 mm to 3 mm. Such fibres are applied to increase rupture strength, to improve behaviour after fracture or in general for mechanical strengthening of cement-based construction materials, in particular, concrete. ^ EFFECT: bundles with synthetic film may be introduced into a construction material without defects. ^ 10 cl, 9 dwg |
