Concrete materials incorporating recycled tyre rubber particles as replacement of mineral aggregates, namely `rubberised concrete', possess the merits of low self-weight, high ductility and high energy-dissipation ability. Available studies on the constitutive model of rubberised concrete focus on the uniaxial compressive behaviour, whereas the influence of rubber particles on the plastic deformation and multi-axial properties of rubberised concrete is still unclear. This project, aims at proposing the multiaxial plastic-damage constitutive model of rubberised concrete. The main challenges of the project will focus on the quantitative relationship between rubber contents and the plastic damage factor of rubberised concrete under uniaxial cyclic loads, as well as studies of the biaxial and triaxial properties of the material. The outcomes of the project will enable the future application of rubberised concrete as construction material, while also provide design guidelines.