Strain-Harding Cement Composites (SHCC) are classes of fibre-reinforced cement-based composites in which crack formation in the cement-based matrix is controlled by fibres bridging carcks to the extent that multiple, closely fine cracks form at increasing tensile deformation and force. RILEM TC-FDS is focussing on the durability afforded to the structural system in service conditions. This must be appropriately modelled and characterised to enable recommendation of rational design guidelines for durability design with SHCC. In addition the TC is dealing with a standard test procedure for such characterisation to verify compliance of a material to specified durability requirements. Topics : - Test methods for mechanical characterization - Structural design and performance - Durability characterization and design - Theoretical considerations and computational methods - Practical applications