In this paper the effect of the combined use of different amount of Reclaimed Asphalt Pavement (RAP) and Electric Arc Furnace Steel Slag (EAFSS) on the low temperature properties of asphalt mixture is investigated with two experimental methods: Bending Beam Rheometer (BBR) mixture creep and Semi-Circular Bending (SCB) fracture tests. Creep stiffness, m-value, thermal stress, critical cracking temperature, fracture energy and fracture toughness are derived, and then, statistically and graphically compared. The results indicate that mixtures with 100% EAFSS show similar low temperature creep and fracture behavior compared to conventional mixtures, while the presence of RAP results in poorer material performance also when EAFSS is included in the mix design.
Investigation on the Combined Recycling of Reclaimed Asphalt Pavement and Steel Slag in Asphalt Mixture at Low Temperature
Riccardi C;
2017-01-01
Abstract
In this paper the effect of the combined use of different amount of Reclaimed Asphalt Pavement (RAP) and Electric Arc Furnace Steel Slag (EAFSS) on the low temperature properties of asphalt mixture is investigated with two experimental methods: Bending Beam Rheometer (BBR) mixture creep and Semi-Circular Bending (SCB) fracture tests. Creep stiffness, m-value, thermal stress, critical cracking temperature, fracture energy and fracture toughness are derived, and then, statistically and graphically compared. The results indicate that mixtures with 100% EAFSS show similar low temperature creep and fracture behavior compared to conventional mixtures, while the presence of RAP results in poorer material performance also when EAFSS is included in the mix design.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
