TY - JOUR
T1 - Composite modification mechanism of blended bio-asphalt combining styrene-butadiene-styrene with crumb rubber
T2 - A sustainable and environmental-friendly solution for wastes
AU - Dong, Ze jiao
AU - Zhou, Tao
AU - Luan, Hai
AU - Williams, R. Christopher
AU - Wang, Peng
AU - Leng, Zhen
N1 - Funding Information:
This research work was sponsored by National Natural Science Foundation of China (Grant Nos. 51478154 and 51478152 ) and Science & Technology Project of DOT of Jilin Province (Grant No. 2018-1-2 ). Also, special appreciation is given to Analysis & Test Center of Harbin Institute of Technology and Jilin Provincial Transportation Planning and Design Institute for their generous assistances during the laboratory tests.
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/3/20
Y1 - 2019/3/20
N2 - Using bio-asphalt from bio-waste to replace petroleum-based asphalt could decrease the dependence on petroleum and shift toward more environmental-friendly and sustainable development of pavement. This study investigates the composite modification mechanism of blended bio-asphalt (BBA) combining styrene-butadiene-styrene (SBS) with crumb rubber (CR) through a comprehensive procedure. Chemical characteristics proposed by Fourier-transform infrared (FTIR) spectroscopy and gel permeation chromatography (GPC) show that the blending and modification was a physical process. Morphological features conducted by atomic force microscopy (AFM) and fluorescence microscopy (FM) indicate that the bio-asphalt could promote the swelling and homogeneous distribution of the polymers, and thus strengthens the polymer's cross-linked network. Rheological properties implemented by multiple stress creep and recovery (MSCR), bending beam rheometer (BBR) and frequency sweep (FS) tests indicate that composite modification could enhance both the high and low-temperature performance of the BBA. Moreover, the Han curves illustrate that the compatibility between the asphalt and polymers was improved by the bio-asphalt addition. Furthermore, performances of modified asphalt processing on industry-scale are superior to that in the laboratory due to the high-effective equipment. In summary, the composite modification not only enhances the comprehensive performances of the BBA, but also makes it possible to reuse bio-waste and scrap tire.
AB - Using bio-asphalt from bio-waste to replace petroleum-based asphalt could decrease the dependence on petroleum and shift toward more environmental-friendly and sustainable development of pavement. This study investigates the composite modification mechanism of blended bio-asphalt (BBA) combining styrene-butadiene-styrene (SBS) with crumb rubber (CR) through a comprehensive procedure. Chemical characteristics proposed by Fourier-transform infrared (FTIR) spectroscopy and gel permeation chromatography (GPC) show that the blending and modification was a physical process. Morphological features conducted by atomic force microscopy (AFM) and fluorescence microscopy (FM) indicate that the bio-asphalt could promote the swelling and homogeneous distribution of the polymers, and thus strengthens the polymer's cross-linked network. Rheological properties implemented by multiple stress creep and recovery (MSCR), bending beam rheometer (BBR) and frequency sweep (FS) tests indicate that composite modification could enhance both the high and low-temperature performance of the BBA. Moreover, the Han curves illustrate that the compatibility between the asphalt and polymers was improved by the bio-asphalt addition. Furthermore, performances of modified asphalt processing on industry-scale are superior to that in the laboratory due to the high-effective equipment. In summary, the composite modification not only enhances the comprehensive performances of the BBA, but also makes it possible to reuse bio-waste and scrap tire.
KW - Bio-asphalt
KW - Composite modification mechanism
KW - Crumb rubber
KW - Morphology
KW - Rheology
KW - Styrene-butadiene-styrene
UR - http://www.scopus.com/inward/record.url?scp=85060027690&partnerID=8YFLogxK
U2 - 10.1016/j.jclepro.2019.01.004
DO - 10.1016/j.jclepro.2019.01.004
M3 - Journal article
AN - SCOPUS:85060027690
SN - 0959-6526
VL - 214
SP - 593
EP - 605
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
ER -
