The reliability of the bonding between steel rebars and concrete cast with recycled aggregates (recycled concrete) is investigated via a Level 2 analysis. To this end, the uniform bond stress distribution approach, which is prescribed by most technical standards, is considered to derive the relevant limit state function. Results of experimental compressive tests conducted by different authors are employed for calibrating the statistical properties of the bond stress of recycled concretes with different percentages of substitution of natural aggregates with recycled ones. Finally, the results of the reliability analysis are utilized for calibrating the partial safety factors of the recycled concretes that guarantee the same safety level of concrete cast with natural aggregates with same nominal strength.
Structural reliability of bonding between steel and concrete made with recycled aggregates
MATERAZZI, Annibale Luigi;BRECCOLOTTI, Marco;UBERTINI, Filippo
2010
Abstract
The reliability of the bonding between steel rebars and concrete cast with recycled aggregates (recycled concrete) is investigated via a Level 2 analysis. To this end, the uniform bond stress distribution approach, which is prescribed by most technical standards, is considered to derive the relevant limit state function. Results of experimental compressive tests conducted by different authors are employed for calibrating the statistical properties of the bond stress of recycled concretes with different percentages of substitution of natural aggregates with recycled ones. Finally, the results of the reliability analysis are utilized for calibrating the partial safety factors of the recycled concretes that guarantee the same safety level of concrete cast with natural aggregates with same nominal strength.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
