| 摘要 |
FIELD: construction.SUBSTANCE: invention relates to the field of railway transport. Concrete sleeper is equipped with concrete body (12) which has a bottom side (14). Monolayer or multilayer plastic plate (18) is located on the bottom side (14) of concrete body (12) by means of layer (16) of fibres with non-oriented arrangement. Layer has fibres, which are connected with plastic plate (18) and / or recessed in the concrete body (12). Layer (16) of fibres with non-oriented arrangement has fibres with diameter from 15 microns to 50 microns and density from 20 to 200 fibres per each square millimetre, and about 20% to 60% of fibres are made with free ends recessed in the concrete body (12). Recessed portions of other fibres are designed in the form of loops. About 10% to 60% of free ends recessed in the concrete body (12) are bent relative to the bottom side (14) of the concrete body (12) to the value from 30° to 90°.EFFECT: ease of sleeve fabrication, reliability and ease of fastening the plastic sole with concrete body are achieved.7 cl, 1 dwg |
