Effect of SAPs and polypropylene fibres on the freeze-thaw resistance of low carbon roller compacted concrete pavement

Most concrete currently used in pavement is based on Portland cement (PC), being responsible for 8-10% of total CO 2 emission. Moreover, external pavements are subjected to exposure classes XF4 and XD3 which related corrosion freeze-thaw. Freeze-thaw resistance an important durability property concrete, especially that the de-icing salts. This study was designed explore freeze-thaw mass scaling low carbon Roller Compacted Concrete (RCC) presence water Four different RCC mixes were with a water/binder ratio 0.45. PC replaced 80% ground granulated blast-furnace slag (GGBS) all develop move towards more sustainable cementitious composite. To assess effectiveness smart engineered additives, superabsorbent polymers (SAPs) at 0.3% by weight binder, Polypropylene (PP) fibre 12-mm length volume fractions mitigation damage. The compressive strength, resistance, specimens evaluated. results indicate both additives improved strength without inclusion PP effective compared addition SAPs mitigate extent internal structural damage self-healing respect reference after 56 cycles.