caa a22 4500 463231317 CHVBK 20180405153243.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10853-007-1713-8 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1713-8 Engineering characterization of recycled asphalt concrete and aged bitumen mixed recycling agent [Elektronische Daten] [J. Chen, C. Huang, P. Chu, K. Lin] A recycling agent is commonly used to restore the aged bitumen to a condition that resembles that of the virgin bitumen. Three reclaimed asphalt pavement (RAP) stockpiles were sampled, and the aged binders recovered from RAP binders were mixed with recycling agents at ten levels to produce bitumen blends. The blends using virgin bitumen as the softening agent exhibited a significantly different rheological behavior from ones using the rejuvenating agent. The addition of a recycling agent could shift up or down the master curve of the blend vertically, depending on the engineering properties of the recycling agent. A normalized viscosity ratio (NVR) model was used to characterize the rheological properties of aged bitumen mixed with softening and rejuvenating agents. An interaction parameter was introduced into the model to consider the physico-chemical reaction between aged bitumen and recycling agent. This mixing rule was compared to the method specified in the blending chart by the Asphalt Institute (AI). The blending chart was shown to be applicable to determine the amount of the softening agent required to meet the target viscosity. The NVR model appeared to be a better tool for the rejuvenating agent to predict the viscosity of a recovered bitumen blend than the AI chart. Springer Science+Business Media, LLC, 2007 Chen J. Department of Civil Engineering, Sustainable Environment Research Center, National Cheng Kung University, 701, Tainan, Taiwan, Republic of China aut Huang C. Department of Civil Engineering, Sustainable Environment Research Center, National Cheng Kung University, 701, Tainan, Taiwan, Republic of China aut Chu P. Department of Civil Engineering, Sustainable Environment Research Center, National Cheng Kung University, 701, Tainan, Taiwan, Republic of China aut Lin K. Department of Civil Engineering, Sustainable Environment Research Center, National Cheng Kung University, 701, Tainan, Taiwan, Republic of China aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/23(2007-12-01), 9867-9876 0022-2461 42:23<9867 2007 42 10853 https://doi.org/10.1007/s10853-007-1713-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1713-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen J. Department of Civil Engineering, Sustainable Environment Research Center, National Cheng Kung University, 701, Tainan, Taiwan, Republic of China aut NATIONALLICENCE 700 1- Huang C. Department of Civil Engineering, Sustainable Environment Research Center, National Cheng Kung University, 701, Tainan, Taiwan, Republic of China aut NATIONALLICENCE 700 1- Chu P. Department of Civil Engineering, Sustainable Environment Research Center, National Cheng Kung University, 701, Tainan, Taiwan, Republic of China aut NATIONALLICENCE 700 1- Lin K. Department of Civil Engineering, Sustainable Environment Research Center, National Cheng Kung University, 701, Tainan, Taiwan, Republic of China aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/23(2007-12-01), 9867-9876 0022-2461 42:23<9867 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer