Author:

Keywords:

recycled concrete aggregates, workability, properties, durability

Abstract:

This paper presents some relevant aspects in using recycled concrete aggregates (RCA) in structural concrete: variability of the properties of RCA, mix design and durability of concrete with RCA. The aim of this research is to investigate the potential use of RCA in structural concrete C20/25 & C25/30 in the exposure classes X0, XC1, XC2, XC3, XF1, by replacing 100 % of the coarse aggregates by RCA. The properties of RCA provided by the recycling industry are investigated, as well as the properties of fresh and hardened recycled concrete. Finally, durability tests regarding to the exposure classes, are performed.