Rheological Characteristics of Reclaimed Asphalt Pavement (RAP) Evaluation using Reclamite Rejuvenating Material

Abstract

Using reclaimed asphalt pavement (RAP) does not only reduce costs but is also environmentally friendly. In its use, it is very important to know the empirical and rheological properties of the asphalt. The testing in this study used a Dynamic Shear Rheometer (DSR) to test asphalt pen 60/70, RAP and Reclamite rejuvenating material mixed with RAP. The results of the pen asphalt 60/70 empirical test met the Bina Marga 2010 General Specifications of Roads and Bridges, while the RAP showed the characteristics of an aging asphalt. In the rheological test based on SUPERPAVE, from the value of the performance grade (PG), it was found that Reclamite reduced the critical temperature value on RAP, so the PG value was the same as the asphalt pen 60/70. The master curve results also showed that Reclamite can reduce the RAP stiffness modulus near the value of asphalt pen 60/70 stiffness modulus. Meanwhile, as seen from the results of the black diagram, the original condition has a range of phase angle (δ) greater than the RTFOT and PAVT conditions because the asphalt has undergone aging. At the same Sbit, asphalt pen 60/70 has a greater (δ) than RAP, while for RAP added with Reclamite, the value is between the RAP and asphalt pen 60/70 value. This illustrates that the Reclamite rejuvenating material makes RAP more viscous.