BUILT-UP COMPOSITE SLEEPER

摘要

FIELD: transport.;SUBSTANCE: proposed device comprises sleeper body with its inside representing a comb with ribs and consisting of 60% by weight of wood and 40% by weight of composite material that fill free space between comb ribs. Composite material comprises, % by weight: fine rubber chips from worn-out automotive tires - 50%, wood fibers - 30%, polypropylene - 10%, preservative ZTK-10%. Sleeper top bed is made from veneer sheets made by, for example LVL technology and attached to said comb and ribs, and has drilled holes to receive wood screws.;EFFECT: longer life.;4 dwg