High-temperature rheological behavior and fatigue performance of lignin modified asphalt binder

2020 ◽  
Vol 230 ◽  
pp. 117063 ◽  
Author(s):  
Junfeng Gao ◽  
Hainian Wang ◽  
Chaochao Liu ◽  
Dongdong Ge ◽  
Zhanping You ◽  
...  
2016 ◽  
Vol 34 (21) ◽  
pp. 1783-1789 ◽  
Author(s):  
Aliasghar Akbari Nasrekani ◽  
Koorosh Naderi ◽  
Mostafa Nakhaei ◽  
Nader Mahmoodinia

2015 ◽  
Vol 744-746 ◽  
pp. 1261-1265 ◽  
Author(s):  
Xiao Kai Yang ◽  
Rui Xiong ◽  
Fa Yang ◽  
Hui Qing Yin ◽  
Tao Yang

The coal gangue is one of the largest industrial solid waste emissions in our country at present, the research about making coal gangue as the filler to modify the properties of asphalt is still blank both at home and abroad. Using rotational viscosity test and dynamic shear rheological test (DSR) to study the high temperature rheological properties of the activated coal gangue modified asphalt binder when under the condition of different filler-bitumen ratio, and compared with mineral powder modified asphalt binder; Based on this, explores the mechanism of coal gangue modified asphalt binder. The results show that the activated coal gangue instead of mineral powder can make the high temperature performance of asphalt binder increases sharply. Research results provide feasible basis of activated coal gangue mineral powder can instead of mineral powder improving the high temperature rheological performance of asphalt binder.


Author(s):  
Xiaofei Zhao ◽  
Minhaz Ur Rahman ◽  
Tharanga Dissanayaka ◽  
Farhad Gharagheizi ◽  
Carla Lacerda ◽  
...  

2017 ◽  
Vol 136 ◽  
pp. 184-191 ◽  
Author(s):  
Mahmoud Ameri ◽  
Mohammadreza Seif ◽  
Massoumeh Abbasi ◽  
Mohammad Molayem ◽  
Alireza KhavandiKhiavi

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Mohammad Ali Notani ◽  
Ali Arabzadeh ◽  
Sajjad Satvati ◽  
Mahmood Tarighati Tabesh ◽  
Navid Ghafari Hashjin ◽  
...  

Author(s):  
Faheem Sadiq Bhat ◽  
Mohammad Shafi Mir

The current study investigates the synergized effect of a nanomaterial and two warm mix additives asphalt (WMA) additives on different properties of asphalt binders. The study used an optimal percentage of 2% for nano-Al2O3; two WMA additives were used in different concentrations. The results revealed that the addition of WMA additives increased the softening point of nano-Al2O3 modified asphalt binder. Penetration and ductility results showed a decrease after the introduction of WMA additives. The viscosity of nano-Al2O3 modified asphalt binders showed a reduction after the introduction of WMA additives. Rutting evaluation was done by using the superpave rutting parameter and multiple stress creep and recovery (MSCR) test. The fatigue performance of the asphalt binders was measured using the superpave fatigue parameter and linear amplitude sweep (LAS) test. Results showed that the introduction of WMA additives improved the rutting and fatigue performance of nano-Al2O3 modified asphalt binders. The introduction of WMA additives enhanced the aging performance of the nano-Al2O3 modified asphalt binders.


Coatings ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 771
Author(s):  
Yan Mu ◽  
Feng Ma ◽  
Jiasheng Dai ◽  
Chen Li ◽  
Zhen Fu ◽  
...  

Asphalt binders have been modified with Crumb rubber (CR) as an effort to fulfil the demand for the development of eco-friendly and sustainable pavements. The objective of this study was to investigate the high temperature rheological behaviors and fatigue performance of crumb rubber modified asphalt (CRMA) binder activated using trans-polyoctenamer (TOR). Long-term and short-term aging tests were performed on samples by thin film oven test (TFOT) and pressure aging vessel (PAV). Rotational viscosity (RV), softening point, and dynamic shear rheometer (DSR) tests were conducted to characterize the rheological and physical performance. A linear amplitude sweep (LAS) test was employed to evaluate the fatigue performance. The results show that TOR-activated CRMA is more capable of hardening the matrix bitumen and improving its high-temperature viscoelastic properties after TFOT. The high temperature viscoelasticity is significantly better than styrene-butadiene-styrene block (SBS) modified asphalt (SBSMA) and CRMA. TOR-activated CRMA exhibits strong rutting resistance, but it is more likely to generate fatigue cracks under the violent advancement of complex modulus. Therefore, TOR active agent has a negative impact on the fatigue performance of CRMA. SBSMA exhibited superior fatigue resistance. The viscosity temperature index (VTS) of TOR-activated CRMA and CRMA was basically identical; the TOR did not significantly improve the temperature sensitivity of CRMA.


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