METHOD FOR PRODUCING A SLEEPER FOR USE IN THE RAILWAY TRACK SUPERSTRUCTURE

• Main Authors: ADRIAN BEDNARCZYK, WINFRIED BOSTERLING, NICOLAS SCHRODER
• Format: Patent
• Language: English
• Published: 28.06.2022
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; LIME, MAGNESIA; MACHINES FOR MAKING RAILWAYS OF ALL KINDS; METALLURGY; PERFORMING OPERATIONS; PERMANENT WAY; PERMANENT-WAY TOOLS; REFRACTORIES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SLAG; TRANSPORTING; TREATMENT OF NATURAL STONE; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a method which enables sleepers to be produced for the railway track superstructure, which have optimised performance characteristics, in a way which is cost-effective and reliable in terms of the process. The method according to the invention provides the following production steps for this purpose: a) providing a mixture 10 - 60 % mass of which consists of a granulate of a plastic, which is deformable by applying heat, and the remainder of which consists of a sand having a bulk density of 1.4 - 2.0 g/cm3; b) heating the mixture to a temperature of 150 - 200 ?C; c) pouring the mixture into a press mould reproducing the sleeper; d) pressing the mixture in the mould at a pressing pressure measured in the mixture of 1 - 5 MPa over a pressing period of up to 60 minutes; e) removing the sleeper from the mould. The abstract is to be published without a figure