Effect of Amount of Fibre and Damage Level on Service Life of SFR Recycled Concrete in Aggressive Environment

The paper presents a numerical calculation of the service life concrete structures considering effect chlorides in case material properties structural lightweight waste aggregate concrete. Different amounts fibres (0.0%, 1.0%, and 1.5%) different values compressive preloading (0%, 50%, 100% ultimate strength capacity-USC) were considered. subject research was comparison influence constant diffusion coefficient time-dependent regarding selected structure. Nine groups characteristics combination with two models are compared. A maturation coefficient, which determined based on long-term monitoring (up to 461 days), accepted for modelling. Thanks parameters, it is possible observe results theoretical structure mentioned factors. analysed can be considered as upper layer an industrial floor chemical plant. It important determine at shall inspected or replaced. results, general, show that higher amount reduces well An exception mixture 1% fibre loaded 50% USC, shows lower than specimens without preloading.