Laboratory evaluation of warm-mix epoxy SBS modified asphalt binders containing Sasobit

2020 ◽  
Vol 32 ◽  
pp. 101550
Author(s):  
Jie Gong ◽  
Xiaocheng Han ◽  
Wufeng Su ◽  
Zhonghua Xi ◽  
Jun Cai ◽  
...  
Keyword(s):  
Asphalt Binders ◽  
Laboratory Evaluation ◽  
Modified Asphalt ◽  
Sbs Modified Asphalt

scholarly journals Evaluating the Rheological, Chemical and Morphological Properties of SBS Modified Asphalt-Binder under Multiple Aging and Rejuvenation Cycles

2021 ◽  
Vol 11 (19) ◽  
pp. 9242
Author(s):  
Xiaobing Chen ◽  
Yunfeng Ning ◽  
Yongming Gu ◽  
Ronglong Zhao ◽  
Jinhu Tong ◽  
...  
Keyword(s):  
Asphalt Binder ◽  
Morphological Properties ◽  
Asphalt Binders ◽  
Laboratory Simulation ◽  
Fatigue Properties ◽  
Type I ◽  
Modified Asphalt ◽  
Modified Asphalt Binder ◽  
Microscopic Morphology ◽  
Sbs Modified Asphalt

To investigate the influence of multiple cycles of aging and rejuvenation on the rheological, chemical, and morphological properties of styrene–butadiene–styrene (SBS)-modified asphalt-binders, the asphalt-binders were aged using two laboratory simulation methods, namely a rolling thin film oven (RTFO) test for short-term aging and pressure aging vessel (PAV) for long-term aging. The asphalt-binders were then rejuvenated with three types of rejuvenators (Type I, II, and III) with different dosages (i.e., 6%, 10%, and 14% for the first, second, and third rejuvenation, respectively). A dynamic shear rheometer (DSR) was then used to analyze the effect of rejuvenators on the rheological properties of all the asphalt-binders. The changes in the functional groups and microscopic morphology in the process of multiple aging and rejuvenation cycles were studied using Fourier transform infrared (FTIR) and atomic force microscopy (AFM). The results indicated that the three rejuvenators could soften the stiffness and restore the microstructures of the aged asphalt-binders in the process of repeated aging and rejuvenation from DSR and AFM testing. Considering the rutting and fatigue properties, the Type I rejuvenator exhibited the potential to achieve the desired rejuvenation effects under multiple rejuvenation cycles. During the multiple aging and rejuvenation cycles, the aging resistance of SBSMA decreased gradually from the FTIR results. This inherently limited the number of repeated rejuvenation cycles. This research is conducive to promoting the application of repeated penetrating rejuvenation.

Evaluation of the performance and temperature susceptibility of gilsonite- and SBS-modified asphalt binders

2019 ◽  
Vol 207 ◽  
pp. 679-692 ◽  
Author(s):  
Danial Mirzaiyan ◽  
Mahmoud Ameri ◽  
Amir Amini ◽  
Mohammadreza Sabouri ◽  
Amirhossein Norouzi
Keyword(s):  
Asphalt Binders ◽  
Modified Asphalt ◽  
Sbs Modified Asphalt ◽  
Temperature Susceptibility

scholarly journals Laboratory Evaluation of Aging Behaviour of SBS Modified Asphalt

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Jie Wang ◽  
Yongchun Qin ◽  
Songchang Huang ◽  
Jian Xu
Keyword(s):  
Particle Size ◽  
Aging Time ◽  
Aging Temperature ◽  
Softening Point ◽  
Area Ratio ◽  
Laboratory Evaluation ◽  
Modified Asphalt ◽  
Time Changes ◽  
Sbs Modified Asphalt ◽  
Particle Area

To study the effect of aging SBS modified asphalt on the performance of asphalt pavement, aging at various times and temperatures was conducted with thin film oven, and then tests were made about the penetration, softening point, ductility, viscosity, toughness, and fluorescence microscopy of modified asphalt with different aging levels. The results show that, with the increasing of aging time, the penetration and ductility of modified asphalt decrease while its softening point and viscosity increase, and the variation trend of the toughness and tenacity is related to the aging temperature; the aging dynamic model with viscosity as parameter can well characterize the aging process of modified asphalt; at microlevel, with the decreasing of SBS particle size, the uniformity of particle size is better. Analysis of macroscopic properties, microscopic characteristics, and significance shows that the SBS particle area ratio has a significant correlation with tenacity as the aging temperature changes. When the aging temperature is 163°C, the SBS particle area ratio still has a significant correlation with tenacity as the aging time changes.

Laboratory Evaluation on Performance of Crumb Rubber SMA

2010 ◽  
Vol 168-170 ◽  
pp. 1749-1755 ◽  
Author(s):  
Yu Ming Dong ◽  
Yi Qiu Tan
Keyword(s):  
Performance Evaluation ◽  
Material Design ◽  
Crumb Rubber ◽  
Laboratory Evaluation ◽  
Scrap Tire ◽  
Modified Asphalt ◽  
Asphalt Rubber ◽  
Temperature Performance ◽  
Evaluation Phase ◽  
Sbs Modified Asphalt

Crumb rubber modified (CRM) asphalt with crumb rubber of scrap tire has higher viscosity, better flexibility, outstanding anti-fatiguing and anti-aging properties. This paper mainly investigated material design and performance evaluation of CRM asphalt SMA mixture. Brookfield Viscosity test is used to ascertain the adoption of fiber in CR-SMA. Because of resilient volume swelling of asphalt rubber mortar, gap-coarse grade must be adopted in asphalt rubber concrete to provide enough free space. This paper amends material composition and grade proportions range of adapted CR-SMA depending on the special characteristic of CRM asphalt. After confirming best grade of CR-SMA, this paper adopted Marshall Method to design Job Mix Formula (JMF) of surface layer CR-SMA13 in Beijing airport south line expressway. The best CRM asphalt content and feasible gradation middle value were obtained by Marshall Test and volume parameter calculation. During performance evaluation phase, other two SMA usually used in Beijing region is added, including SBS modified asphalt SMA, Trinidad Lake asphalt (TLA) and SBS modified asphalt SMA. By evaluations of high temperature performance, low temperature performance, moisture sensitivity and so on. The results indicate that pavement performance of CR-SMA is excellent, and have no distinct difference compared with the other two SMA.

Effect of Waste Edible Animal Oil on Physical Properties of Aged Asphalt

2014 ◽  
Vol 599 ◽  
pp. 130-134 ◽  
Author(s):  
Yang Sang ◽  
Mei Zhu Chen ◽  
Jin Wen ◽  
Bin Bin Leng ◽  
Shao Peng Wu
Keyword(s):  
Thin Film ◽  
Physical Properties ◽  
Softening Point ◽  
Asphalt Binders ◽  
Oven Test ◽  
Modified Asphalt ◽  
Aged Asphalt ◽  
Sbs Modified Asphalt

In order to explore the feasibility of waste edible animal oil used as the asphalt rejuvenator, this study investigated the effect of waste edible animal oil on softening point, penetration, ductility and viscosity of aged asphalt binders. The aged asphalt binders were obtained from the indoor simulating aging processes by using Thin Film Oven Test (TFOT) and Pressure Aging Vessel (PAV). The results show that the dosage of waste animal oil has different effect on physical properties of aged asphalt. Both 70# asphalt and SBS modified asphalt have the optimal content of waste edible animal oil to achieve the best physical properties. The optimal contents of waste edible animal oil for 70# asphalt and SBS modified asphalt are 6% and 4%, respectively.

scholarly journals Properties of Direct Coal Liquefaction Residue Modified Asphalt Mixture

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Jie Ji ◽  
Hui Yao ◽  
Di Wang ◽  
Zhi Suo ◽  
Luhou Liu ◽  
...  
Keyword(s):  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Coal Liquefaction ◽  
Asphalt Binders ◽  
Modified Asphalt ◽  
Viscoelastic Parameters ◽  
Direct Coal Liquefaction ◽  
Coal Liquefaction Residue ◽  
Sbs Modified Asphalt

The objectives of this paper are to use Direct Coal Liquefaction Residue (DLCR) to modify the asphalt binders and mixtures and to evaluate the performance of modified asphalt mixtures. The dynamic modulus and phase angle of DCLR and DCLR-composite modified asphalt mixture were analyzed, and the viscoelastic properties of these modified asphalt mixtures were compared to the base asphalt binder SK-90 and Styrene-Butadiene-Styrene (SBS) modified asphalt mixtures. The master curves of the asphalt mixtures were shown, and dynamic and viscoelastic behaviors of asphalt mixtures were described using the Christensen-Anderson-Marasteanu (CAM) model. The test results show that the dynamic moduli of DCLR and DCLR-composite asphalt mixtures are higher than those of the SK-90 and SBS modified asphalt mixtures. Based on the viscoelastic parameters of CAM models of the asphalt mixtures, the high- and low-temperature performance of DLCR and DCLR-composite modified asphalt mixtures are obviously better than the SK-90 and SBS modified asphalt mixtures. In addition, the DCLR and DCLR-composite modified asphalt mixtures are more insensitive to the frequency compared to SK-90 and SBS modified asphalt mixtures.

Sign in / Sign up

Export Citation Format

Share Document