Recycled aggregate (RA) has been utilized for several decades by processing construction and demolition waste. Initially, it was primarily employed as a base or backfill material. However, in the context of sustainable development, there is an increasing use of RA in structural concrete. This article presents findings from an experimental programme involving three full-scale reinforced concrete flat slab specimens with a thickness of 250 mm subjected to punching shear. The concrete in these specimens contained coarse recycled aggregate with 50% and 100% replacement, as well as a control specimen cast in conventional (natural aggregate) concrete. The tests showed that while the presence of coarse recycled aggregate negatively affects the mechanical properties of the concrete, it does not have a marked adverse effect on the punching shear resistance of the slabs.
Punching Shear Behavior of Full-Scale Flat Slabs Cast From Coarse Recycled Aggregate Concrete
Dario Coronelli;
2025-01-01
Abstract
Recycled aggregate (RA) has been utilized for several decades by processing construction and demolition waste. Initially, it was primarily employed as a base or backfill material. However, in the context of sustainable development, there is an increasing use of RA in structural concrete. This article presents findings from an experimental programme involving three full-scale reinforced concrete flat slab specimens with a thickness of 250 mm subjected to punching shear. The concrete in these specimens contained coarse recycled aggregate with 50% and 100% replacement, as well as a control specimen cast in conventional (natural aggregate) concrete. The tests showed that while the presence of coarse recycled aggregate negatively affects the mechanical properties of the concrete, it does not have a marked adverse effect on the punching shear resistance of the slabs.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
