TY - GEN
T1 - Effect of bio-oil on low-intermediate temperature properties of organosolv lignin-bitumen
AU - Zhang, Y.
AU - Liu, X.
AU - Ren, S.
AU - Jing, R.
AU - Gard, W.
AU - Apostolidis, P.
AU - Erkens, S.
AU - Skarpas, A.
PY - 2021
Y1 - 2021
N2 - Lignin, one of the most abundant natural polymers, has been extensively studied as liquid or solid additive in bituminous binders. Despite the fact the organosolv lignin in bitumen improves the overall resistance against oxidative aging, lignin could lead to binders of high thermal cracking sensitivity. In this study, a bio-based oil is implemented in a lignin modified bitumen to ameliorate characteristics, such as fatigue and thermal cracking resistance. Pressure aging vessel conditioning was applied to new binders formulated by different proportions of bio-oil to simulate the long-term aging. A series of rheological tests were performed. Based on the linear amplitude sweep test results, fatigue damage of lignin-bitumen could be reduced by increasing the oil content. According to relaxation test results, the addition of oil significantly decreased the ratio of residual stress and relaxation time. This study has shown preliminary conclusions on the use of bio-oil to improve the low-intermediate temperature performance of lignin-bitumen binders.
AB - Lignin, one of the most abundant natural polymers, has been extensively studied as liquid or solid additive in bituminous binders. Despite the fact the organosolv lignin in bitumen improves the overall resistance against oxidative aging, lignin could lead to binders of high thermal cracking sensitivity. In this study, a bio-based oil is implemented in a lignin modified bitumen to ameliorate characteristics, such as fatigue and thermal cracking resistance. Pressure aging vessel conditioning was applied to new binders formulated by different proportions of bio-oil to simulate the long-term aging. A series of rheological tests were performed. Based on the linear amplitude sweep test results, fatigue damage of lignin-bitumen could be reduced by increasing the oil content. According to relaxation test results, the addition of oil significantly decreased the ratio of residual stress and relaxation time. This study has shown preliminary conclusions on the use of bio-oil to improve the low-intermediate temperature performance of lignin-bitumen binders.
UR - http://www.scopus.com/inward/record.url?scp=85117420045&partnerID=8YFLogxK
U2 - 10.1201/9781003156222-05
DO - 10.1201/9781003156222-05
M3 - Conference contribution
AN - SCOPUS:85117420045
T3 - Functional Pavements - Proceedings of the 6th Chinese-European Workshop on Functional Pavement Design, CEW 2020
SP - 26
EP - 30
BT - Functional Pavements - Proceedings of the 6th Chinese-European Workshop on Functional Pavement Design, CEW 2020
A2 - Chen, Xianhua
A2 - Yang, Jun
A2 - Oeser, Markus
A2 - Wang, Haopeng
PB - CRC Press / Balkema - Taylor & Francis Group
T2 - 6th Chinese-European Workshop on Functional Pavement Design, CEW 2020
Y2 - 18 October 2020 through 21 October 2020
ER -