scholarly journals The High Temperature Performance Evaluation of Polymer/Nanocomposite Modified Asphalt Cement

Teknik Dergi ◽  
2022 ◽  
Author(s):  
Mustafa ALAS ◽  
Ali ALBRKA ◽  
Hüseyin GÖKÇEKUŞ
Keyword(s):  
Performance Evaluation ◽  
High Temperature ◽  
Polymer Nanocomposite ◽  
Asphalt Cement ◽  
Modified Asphalt ◽  
Temperature Performance

scholarly journals High-Temperature Performance of Asphalt Mixtures: Preliminary Analysis for the Standard Technical Index Based on Gray Relational Analysis Method

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Jian Xu ◽  
Yan Gong ◽  
Li-Biao Chen ◽  
Tao Ma ◽  
Jun-Cheng Zeng ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
High Temperature ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Asphalt Binders ◽  
Gray Relational Analysis ◽  
Low Grade ◽  
Modified Asphalt ◽  
Relational Analysis ◽  
Temperature Performance

Aiming to evaluate the high-temperature performance of asphalt binders and asphalt mixtures and to investigate the reliability of the standard technical indexes to evaluate the performance of the asphalt, six typically used asphalt types were employed in this study. The standard high-temperature rheological test, the multiple stress creep recovery (MSCR) test, and the zero-shear viscosity (ZSV) test were employed to characterize the high-temperature performance and non-Newtonian fluid properties of the asphalt. Meanwhile, the high-temperature performance of the asphalt mixture was evaluated through the rutting tests based on the mixture design of AC-13. In general, the modified asphalt performed better than the unmodified asphalt according to the high-temperature rheological properties tests. The ranking of the six kinds of asphalt was confirmed to be different in various laboratory tests. The test results of the asphalt binders showed that the Tafpack Super- (TPS-) modified asphalt performed best in the MSCR and ZSV tests, while the low-grade asphalt PEN20 had the best technical indexes in the dynamic shear rheometer (DSR) test. Besides, the relation between the asphalt and the asphalt mixture was analyzed by gray relational analysis (GRA) method. The present rutting indicator G ∗ / sin   δ  and  G ∗ / 1 − sin   δ ⋅   tan   δ − 1 for evaluating the asphalt mixtures’ high-temperature performance might no longer be suitable. The Cross/Williamson model was the most suitable for calculating and fitting the ZSV, which could be used as the key indicator of the high-temperature performance evaluation of the asphalt. This work lays a foundation for the further study of the high-temperature performance evaluation of asphalt binders.

Applied Research of the Modifying Agent of Rubber Plastic Composite (MaR) in Asphalt Mixture

2013 ◽  
Vol 477-478 ◽  
pp. 1175-1178
Author(s):  
Ling Zou ◽  
Jing Wei Ne ◽  
Weng Gang Zhang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Asphalt Mixture ◽  
Bending Test ◽  
Water Stability ◽  
Modified Asphalt ◽  
Modifying Agent ◽  
Temperature Performance ◽  
Splitting Test ◽  
Low Temperature Performance

70# and 90# matrix asphalt mixture with MaR were studied through dynamic modulus test, rutting test, freeze-thaw splitting test, bending test to study the applicability of the Modifying agent of rubber plastic compound (MaR) in matrix asphalt mixture.Test results were Compared with SBSI-C modified asphalt mixture.The results indicate that: high-temperature stability of MaR+70# asphalt mixture is as well as SBSI-C modified asphalt mixture,and is bettere than MaR+90# asphalt mixture; water stability of MaR+90# asphalt mixture is bettere than SBSI-C modified asphalt mixture and MaR+70# asphalt mixture; low temperature performance of MaR+90# asphalt mixture is bettere than MaR+70# asphalt mixture, but is worse than modified asphalt mixture SBSI-C ; MaR+70# asphalt mixture can be first used in area of resisting high temperature and rutting, MaR+90# asphalt mixture can be used if the water stability performance and low temperature performance are considered.

Study on the Performance of Nano Calcium Carbonate Modified Asphalt Concrete AC-13

2012 ◽  
Vol 450-451 ◽  
pp. 503-507 ◽  
Author(s):  
Xiu Hong Hao ◽  
Ai Qin Zhang ◽  
Wei Yang
Keyword(s):  
High Temperature ◽  
Calcium Carbonate ◽  
Dynamic Stability ◽  
Asphalt Concrete ◽  
Water Stability ◽  
Modified Asphalt ◽  
Temperature Performance ◽  
Residual Stability

To make nano calcium carbonate as the modifier, firstly the best proportion of nano calcium carbonate is determined as 6% by comparing the influences of different proportions of nano calcium carbonate to the indexes of asphalt. Then the influence of mixing with nano calcium carbonate to the performance of asphalt concrete AC-13 has been studied. Tests show that, the mixing of 6% nano calcium carbonate has improved the dynamic stability of asphalt concrete AC-13 from 991 times/mm to 1269 times/mm; the residual stability from 0.87 to 0.94. This indicates that after mixing with nano calcium carbonate, both the high temperature performance and water stability of asphalt concrete have been improved.

scholarly journals Research on the Properties of Low Temperature and Anti-UV of Asphalt with Nano-ZnO/Nano-TiO2/Copolymer SBS Composite Modified in High-Altitude Areas

2020 ◽  
Vol 2020 ◽  
pp. 1-15 ◽  
Author(s):  
Xiangbing Xie ◽  
Tao Hui ◽  
Yaofei Luo ◽  
Han Li ◽  
Guanghui Li ◽  
...  
Keyword(s):  
Surface Modification ◽  
High Temperature ◽  
Low Temperature ◽  
Orthogonal Test ◽  
Nano Zno ◽  
Carbonyl Index ◽  
Modified Asphalt ◽  
Temperature Performance ◽  
Before And After ◽  
Sbs Modified Asphalt

Strong ultraviolet light and low-temperature are the typical environmental characteristics in high-altitude areas. The performance of SBS-modified asphalt in the above environmental characteristics needs further study. To improve the resistance ultraviolet (UV) ageing and low-temperature performance of copolymer- (SBS-) modified asphalt, an SBS-modified asphalt containing nano-ZnO and nano-TiO2 is proposed. In this paper, nano-ZnO, nano-TiO2, and SBS were used as modifiers with the silane coupling agent (KH-560) as the nanomaterial surface modification. The orthogonal test table was used to analyse the effects of the three modifiers on the physical properties of modified asphalt at different dosages. On this basis, the physical properties, low-temperature properties, and ageing indices (carbonyl index and sulfoxide index) were studied for base asphalt, SBS-modified asphalt, nano-ZnO/SBS-modified asphalt, and nano-ZnO/nano-TiO2/SBS composite-modified asphalt before and after photoaging. The content changes of characteristic elements (Zn and Ti) in the nano-ZnO/nano-TiO2/SBS composite-modified asphalt before and after ageing were studied by scanning electron microscopy with energy dispersive spectroscopy (SEM/EDS), and the UV ageing mechanism was revealed. The results indicate that two nanoparticles show the best compatibility with asphalt after surface modification and can improve the binding ability between SBS and base asphalt. The orthogonal test analysis shows that nano-ZnO has a highly significant effect on the low- and high-temperature performance of the nano-ZnO/nano-TiO2/SBS composite-modified asphalt, and nano-TiO2 has a significant effect on the high-temperature performance. Three optimal composite-modified systems for base asphalt including 4% nano-ZnO/1.5% nano-TiO2/3.2% SBS were proposed and had the best antiaging ability. Compared with the sulfoxide index, the carbonyl index changed most obviously before and after ageing. Additionally, the results reveal that nano-TiO2 has a good absorption effect at a wavelength of 365 nm (ultraviolet light), while nano-ZnO is liable to photolysis, and its activity decreases at this wavelength.

Modified repeated load tri-axial test for the high-temperature performance evaluation of HMA

2015 ◽  
Vol 16 (4) ◽  
pp. 784-798 ◽  
Author(s):  
Bin Yu ◽  
Haoran Zhu ◽  
Xingyu Gu ◽  
Fujian Ni ◽  
Rui Guo
Keyword(s):  
Performance Evaluation ◽  
High Temperature ◽  
Temperature Performance ◽  
Repeated Load

The Rejuvenating and Aging Performances of Aged SBS Modified Asphalt Treated by Different Rejuvenator Sealer Materials

2013 ◽  
Vol 753-755 ◽  
pp. 734-740 ◽  
Author(s):  
Li Wan ◽  
Shao Peng Wu ◽  
Min Lei ◽  
Kim Jenkins
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Economic Benefits ◽  
Modified Asphalt ◽  
Temperature Performance ◽  
Low Performance ◽  
Aged Binder ◽  
Styrene Butadiene ◽  
Sbs Modified Asphalt ◽  
Butadiene Styrene

Currently, rejuvenator seal which is one of the preventive maintenance methods is more widely used due to its economic benefits and convenience. This paper described the chemical and rheological evaluation of the aged styrene butadiene styrene modified asphalt (ASMA) treated by two rejuvenator sealer materials (RSMs). First the ASMA was rejuvenated by mixing with the RSMs. Then the ASMA and two rejuvenated binders were re-aged by 10h PAV test. At last, the new binder, ASMA, rejuvenated ASMAs, re-aged binders were tested by Dynamic shear rheometer (DSR) and Fourier Transform Infrared Spectroscopy (FTIR). The results showed that the first aging of the new binder had a significant decrease of the low temperature performance and slight improvement of the high temperature performance. In addition, the high temperature performance increased obviously after 10h PAV test. Two RSMs could significantly soften the aged binder due to increase of maltene content existing in the RSMs, and the rejuvenated binder exhibited a better low performance after the 10h PAV test. However they cannot restore the low temperature completely because that RSMs cannot remedy the degradation of SBS modifier and remove the carbonyl produced in the aging progress.

The Influence of Nano-Montmorillonite on High Temperature Performance of Asphalt

2014 ◽  
Vol 1015 ◽  
pp. 283-286 ◽  
Author(s):  
Zeng Ping Zhang ◽  
Xing Jiao Wu ◽  
Xiao Fen Nan ◽  
Meng Jia ◽  
Ji Cheng Han
Keyword(s):  
High Temperature ◽  
Temperature Sensitivity ◽  
Experimental Results ◽  
Rutting Resistance ◽  
Modified Asphalt ◽  
Organic Montmorillonite ◽  
Temperature Performance ◽  
High Temperature Sensitivity

In order to increase the life of bituminous pavement, quality of bitumen needs to be enhanced and modified. Different dosages of nano-organic montmorillonite (nano-OMMT) were used as modifier for base asphalt. The effect of the contents of nano-OMMT on high temperature performance of asphalt was investigated. Experimental results showed that with the increase of nano-OMMT of content, the high temperature performance of asphalt was gradually improved. And the high temperature sensitivity of asphalt is also enhanced. The nano-OMMT modified asphalt is expected to possess superior rutting resistance to the base asphalt.

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