Railway applications. Track. Concrete sleepers and bearers - General requirements Ingestion-build-251241 a minimum conditioning period of

a minimum conditioning period of 14 days and a minimum exposure to increased CO2 levels of 70 days

BS IEC 60748-23-1 also provides a means of quality assessment on the basis of qualification approval

mathematical corrections shall be applied

staff and stakeholder satisfaction

Railway applications. Track. Concrete sleepers and bearers - General requirements Ingestion-build-251241 a minimum conditioning period of1 Scope This part of the EN 13230 series defines technical criteria and control procedures which need to be satisfied by the constituent materials and the finished concrete sleepers and bearers, i. e.: precast concrete sleepers, twin block reinforced sleepers, bearers for switches and crossings, and special elements for railway tracks. The main requirement of concrete sleepers and bearers is the transmission of vertical, lateral and longitudinal loads