Abstract
This paper characterises the durability of concrete produced with thermoactivated recycled cement (RC) obtained from waste cement paste or the cementitious fraction of waste concrete. The durability of concrete produced with 5–100% RC and water/binder ratios of 0.35–0.65 was assessed through capillary absorption, oxygen permeability, rapid chloride migration and carbonation resistance tests. Overall, RC thermoactivated at 650 °C showed high rehydration capacity and effectively improved the durability properties of concrete compared to the same non-treated waste materials. Moreover, concretes with up to 100% RC reached comparable durability to that of reference concretes of equal w/b.
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