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.

本文描述了用从废水泥浆或废混凝土的胶凝部分获得的热活化再生水泥 (RC) 生产的混凝土的耐久性。用 5-100% RC 和 0.35-0.65 的水/粘合剂比生产的混凝土的耐久性通过毛细管吸收、透氧性、快速氯化物迁移和抗碳化测试进行评估。总体而言，与相同的未处理废料相比，在 650 °C 下热活化的 RC 显示出较高的再水化能力，并有效提高了混凝土的耐久性。此外，具有高达 100% RC 的混凝土达到了与同等 w/b 的参考混凝土相当的耐久性。