Sustainable Rail Infrastructure using Recycled and Non-traditional Materials

Research Program 3

Program 3 will focus on the application of recyclable products such as waste rubber tyres, steel and coal industry by-products (e.g. slag and coalwash) and marginal rockfill in track construction while stamping a favourable carbon footprint. Adopting advanced material characterization and processing techniques that capture energy absorbing properties and custom-made rubber sheets to reduce noise and vibration and particle interlocking via plastic geogrids for improved track stability and cellular membranes – made of used tyres – for containing substructure fill (e.g. rockfills, coalwash and steel slag). The construction costs can be reduced substantially while improving safety and track stability. It is hoped we will also introduce a novel type of hybrid sleepers where reinforced rubberised concrete is confined by a thin composite layer made of reinforced polymer to restrain internal cracking and to protect the sleeper against corrosion and attrition.

Program Leaders

Chief Investigators

Partner Organisations

ACRI, BC, ECOFLEX.

Facililties

Large-scale cyclic triaxial, simple shear testing rigs, Drop-weight impact test rig, LIEF-FCTHSR, numerical software (e.g. ANSYS MATLAB, ABAQUS)