TY - JOUR
T1 - The Rejuvenation Effect of Bio-Oils on Long-Term Aged Asphalt
AU - Wang, Jintao
AU - Xu, Shi
AU - Zhu, Sifan
AU - Tian, Qin
AU - Yang, Xinkui
AU - Pipintakos, Georgios
AU - Ren, Shisong
AU - Wu, Shaopeng
PY - 2024
Y1 - 2024
N2 - Generally, rejuvenators are used to supply missing components of aged asphalt, reverse the aging process, and are widely used in asphalt maintenance and recycling. However, compared with traditional rejuvenators, bio-oil rejuvenators are environmentally friendly, economical and efficient. This study looks into the effect of the three different bio-oils, namely sunflower oil, soybean oil, and palm oil, on the physical properties, rheological properties and chemical components of aged asphalt at different dosages. The asphalt physical properties and Dynamic Shear Rheological (DSR) test results show that with the increase in bio-oil, the physical properties and rheological properties of rejuvenated asphalt are close to those of virgin asphalt, but the high-temperature rutting resistance needs to be further improved. The results of Fourier Transform Infrared Spectroscopy (FTIR) show that the carbonyl and sulfoxide indices of rejuvenated asphalt are much lower than those of aged asphalt. Moreover, the rejuvenation efficiency of aged asphalt mixed with sunflower oil is better than that with soybean oil and palm oil at the same dosage.
AB - Generally, rejuvenators are used to supply missing components of aged asphalt, reverse the aging process, and are widely used in asphalt maintenance and recycling. However, compared with traditional rejuvenators, bio-oil rejuvenators are environmentally friendly, economical and efficient. This study looks into the effect of the three different bio-oils, namely sunflower oil, soybean oil, and palm oil, on the physical properties, rheological properties and chemical components of aged asphalt at different dosages. The asphalt physical properties and Dynamic Shear Rheological (DSR) test results show that with the increase in bio-oil, the physical properties and rheological properties of rejuvenated asphalt are close to those of virgin asphalt, but the high-temperature rutting resistance needs to be further improved. The results of Fourier Transform Infrared Spectroscopy (FTIR) show that the carbonyl and sulfoxide indices of rejuvenated asphalt are much lower than those of aged asphalt. Moreover, the rejuvenation efficiency of aged asphalt mixed with sunflower oil is better than that with soybean oil and palm oil at the same dosage.
KW - asphalt
KW - aging
KW - rejuvenating
KW - sunflower oil
KW - soybean oil
KW - palm oil
KW - physical and rheological properties
KW - chemical composition
UR - http://www.scopus.com/inward/record.url?scp=85198370502&partnerID=8YFLogxK
U2 - 10.3390/ma17133316
DO - 10.3390/ma17133316
M3 - Article
SN - 1996-1944
VL - 17
JO - Materials
JF - Materials
IS - 13
M1 - 3316
ER -