Dual-Phase (DP) steel reinforcing bars represent, as already presented in companion papers, a valid alternative to TempCore® grades due to their improved durability towards corrosion phenomena and to comparable strength and ductility performance in uncorroded/reference condition. The mechanical characterization of Dual-Phase steel reinforcing bars, in alignment with what presented in the current scientific literature, highlighted the presence of a stress-strain behaviour characterized by undefined yielding, differently from then what nowadays foreseen by design standards for reinforced concrete structures (imposing specific requirements for example for the hardening ratio). The influence of the adoption of Dual-Phase reinforcing bars on the structural performance of reinforced concrete (RC) buildings needs then consequently to be analyzed with the aim of defining the most relevant parameters (such as plastic hinge length, yielding and ultimate chord rotation capacity, etc.) that are nowadays given by standards for traditional reinforcing steels (like TempCore® ones). In the present paper, the preliminary results of the experimental test campaign performed on reinforced concrete internal and external joints and column bases using Dual-Phase steel rebars and (in case of columns only) TempCore® ones, are presented.
Experimental tests on RC substructures with Dual-Phase reinforcing steel
Silvia Caprili;Giuseppe Chellini;Francesca Mattei;Federico Romis;Walter Salvatore
2019-01-01
Abstract
Dual-Phase (DP) steel reinforcing bars represent, as already presented in companion papers, a valid alternative to TempCore® grades due to their improved durability towards corrosion phenomena and to comparable strength and ductility performance in uncorroded/reference condition. The mechanical characterization of Dual-Phase steel reinforcing bars, in alignment with what presented in the current scientific literature, highlighted the presence of a stress-strain behaviour characterized by undefined yielding, differently from then what nowadays foreseen by design standards for reinforced concrete structures (imposing specific requirements for example for the hardening ratio). The influence of the adoption of Dual-Phase reinforcing bars on the structural performance of reinforced concrete (RC) buildings needs then consequently to be analyzed with the aim of defining the most relevant parameters (such as plastic hinge length, yielding and ultimate chord rotation capacity, etc.) that are nowadays given by standards for traditional reinforcing steels (like TempCore® ones). In the present paper, the preliminary results of the experimental test campaign performed on reinforced concrete internal and external joints and column bases using Dual-Phase steel rebars and (in case of columns only) TempCore® ones, are presented.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
