Properties of concrete blocks made with recycled concrete aggregates: From block wastes to new blocks

Large amounts of construction and demolition wastes (C&DW) especially concrete wastes are generated annually and will increase in the future. Until now, only a small fraction of concrete wastes is re-used as recycled concrete aggregates (RCA) in the manufacture of concrete. In this paper, the feasibility of using RCA obtained from old concrete...

Differences between laboratory and in-situ conditions leading to bad estimation of the water absorption capacity of recycled concrete aggregates

Poor estimation of the water absorption coefficient (WA) of recycled concrete aggregates (RCA) engenders inadequate effective water for the recycled aggregate concrete (RAC), leading to poor mechanical properties or poor workability. Pre-saturation of RCA before mixing could appear as a potential technical solution. However, pre-saturation...