Solutions for Improving the Sustainability of Reinforced Concrete Elements

Abstract

Improving sustainability of reinforced concrete structures suppose structural measures, technological measures and construction process engineering measures. In this context, the article presents solutions for improving the sustainability of reinforced concrete structures such as: use of precast prestressed concrete elements (purlins); replacing CEM I cement with CEM II/A; using recycled aggregates and self-compacting concrete; replacing in concrete elements of the stirrups in the central area with fiber reinforced concrete. Experimental data obtained for three testing elements (with and without of stirrups) are: longitudinal strains, beam deflection for different level of load. The results presented indicate, in terms of strains, deflection, and cracking, similar behavior of the three tested purlins under test conditions, up to the load values corresponding to normal service loads (no cracks were observed up to this load level) and design loads, respectively.