The concrete mix design and the fresh properties are presented in Table . The mix was designed for all concretes assuming an air content of 1.5%. Concretes were mixed for about 15 min in an 80 L rotating pan mixer (Eirich). In the case of the concrete with the saturated C-LWA, the latter were added after first mixing of all other components. For the C-LWA added in their cured state (C-LWA dry), they were first mixed with all dry components and next water and superplasticizer were added to the mix.