scholarly journals Effect of Short Term Aging on Organic Montmorillonite Nanoclay Modified Asphalt

2013 ◽  
Vol 6 (11) ◽  
pp. 1-9 ◽  
Author(s):  
Lamya M. J. Mahdi
Keyword(s):  
Short Term ◽  
Modified Asphalt ◽  
Organic Montmorillonite ◽  
Montmorillonite Nanoclay

Study on the properties of GNPs/PS and GNPs/ODA composites incorporated SBS modified asphalt after short-term and long-term aging

2020 ◽  
Vol 261 ◽  
pp. 119682 ◽  
Author(s):  
Yunhao Wei ◽  
Yu Liu ◽  
Yaseen Muhammad ◽  
Sidra Subhan ◽  
Fei Meng ◽  
...  
Keyword(s):  
Short Term ◽  
Modified Asphalt ◽  
Sbs Modified Asphalt

scholarly journals Investigation on the Short-Term Aging-Resistance of Thermoplastic Polyurethane-Modified Asphalt Binders

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1189 ◽  
Author(s):  
Ruien Yu ◽  
Xijing Zhu ◽  
Maorong Zhang ◽  
Changqing Fang
Keyword(s):  
Thermal Properties ◽  
High Temperature ◽  
High Speed ◽  
Storage Stability ◽  
Thermoplastic Polyurethane ◽  
Short Term ◽  
Modified Asphalt ◽  
Aging Resistance ◽  
High Temperature Storage ◽  
Temperature Storage

In this reported work, thermoplastic polyurethane (TPU) was used as a reactive polymer modifying agent to prepare a modified-asphalt, using a high-speed shearing method. Physical performance tests of the TPU-modified asphalt were conducted before and after short-term aging, and the aging resistance was examined by the change in materials properties. In addition, low-temperature rheological properties, thermal properties, the high-temperature storage stability, and the aging mechanism of TPU-modified asphalt were also investigated. The results showed that the addition of TPU improved the aging resistance of base asphalt, which was evidenced by the increased penetration ratio and decreased softening point of the asphalt, after aging. Similarly, Fourier Transform infrared (FTIR) spectroscopy results verified that TPU improved the asphalt aging resistance. It was found that the TPU functional groups played a role in improving thermal properties, high-temperature storage stability, and in the dispersion of modified asphalt.

Organic Montmorillonite Modified Asphalt Materials: Preparation and Characterization

2013 ◽  
Vol 42 (1) ◽  
pp. 20120205 ◽  
Author(s):  
Jianzhong Pei ◽  
Yong Wen ◽  
Yanwei Li ◽  
Zengping Zhang ◽  
Xin Shi ◽  
...  
Keyword(s):  
Modified Asphalt ◽  
Organic Montmorillonite ◽  
Asphalt Materials ◽  
Materials Preparation

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.

scholarly journals Influence of PPA on the Short-Term Antiaging Performance of Asphalt

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Lining Gao ◽  
Nana Cai ◽  
Xiaohong Fu ◽  
Rui He ◽  
Honggang Zhang ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
High Temperature ◽  
High Performance ◽  
Main Function ◽  
Short Term ◽  
Temperature Resistance ◽  
Modified Asphalt ◽  
High Temperature Resistance ◽  
Before And After

It has been confirmed that polyphosphoric acid (PPA) can significantly improve the high-temperature resistance, storage stability, and aging resistance of asphalt. The low price of PPA is conducive to the development of modified asphalt with high performance and excellent economy, suggesting its great application prospects. At present, there is little research on the role of PPA in delaying the aging process of PPA-modified asphalt, and a consensus has not yet been reached. Therefore, PPA-modified asphalt with different blending amounts (0 wt%, 0.4 wt%, 0.8 wt%, and 1.2 wt%) was prepared in this study. On the basis of variable performance, the role of PPA in the short-term antiaging process of asphalt is analyzed through Fourier transform infrared spectroscopy (FTIR) analysis of PPA-modified asphalt before and after aging, combined with the analysis of the change in components. The results showed that after PPA addition, the high-temperature resistance and the thermal stability of asphalt were improved and the temperature sensitivity was weakened. Both curves of ductility and G ∗ indicate the potential saturation effect of PPA addition; together with infrared spectroscopy, we proved that there are both chemical reactions and physical mixing in the PPA-modified asphalt. The component fractions show that PPA will cause the asphalt to transform from sol to gel and the main function of PPA in retarding asphalt aging is the dispersion of the agglomerates of asphaltene micelles by PPA.

Investigation of Short-Term Laboratory Aging of Neat and Modified Asphalt Binders

2011 ◽  
Author(s):  
Ramon Bonaquist ◽  
David A. Anderson ◽  
◽  
◽  
Keyword(s):  
Asphalt Binders ◽  
Short Term ◽  
Modified Asphalt

Effect of Antioxidant Characteristic from Waste Cooking Oil in Modified Asphalt Binder

2016 ◽  
Vol 700 ◽  
pp. 197-206 ◽  
Author(s):  
Wan Nur Aifa Wan Azahar ◽  
Mastura Bujang ◽  
Ramadhansyah Putra Jaya ◽  
Mohd Rosli Hainin ◽  
Norzita Ngadi ◽  
...  
Keyword(s):  
Aging Process ◽  
Asphalt Pavement ◽  
Asphalt Binder ◽  
Waste Cooking Oil ◽  
Short Term ◽  
Aging Rate ◽  
Modified Asphalt ◽  
Cooking Oil ◽  
Modified Asphalt Binder

Aging process especially in asphalt binder material can occur throughout the life cycle of asphalt pavement starting from mixing, placement and during the service life. During this process, the more stiffer and brittle of asphalt binder is produced due to age hardening and gives an indication of initial factor of deterioration in asphalt pavement. A number of noteworthy researchers have focused on oil based modification to produce modified asphalt binder by using Waste Cooking Oil (WCO), due to the presence of natural antioxidant properties possessed in WCO. Antioxidant has played the role as an oxidative inhibition and has the potential to minimize the aging rate to occur. The aging process is conducted by separating between short term and long term aging where short term oxidative aging of binders was simulated using rolling thin film oven (RTFO) while long term aging was performed using pressure aging vessel (PAV). The laboratory evaluation was carried out to investigate the relationship between the qualities of WCO that affect the availability of antioxidant amount towards the susceptibility of aging rate by conducting Dynamic Shear Rheometer (DSR). The result from rheological studies demonstrated that the lowest Aging Index (AI) is presented as 2.14, 2.18 and 1.79 for replacement by using WCO in December sample at concentration of 3%, 4% and 5% for short term aging while AI at 3% = 5.17 and 5% = 7.22 for long term aging. Therefore, the high quality of oil represented by WCO in December sample has indicated the high availability of antioxidant content that can minimize the aging susceptibility in the asphalt binder modified by WCO.

Effect of Aging on the Low-Temperature Properties of Asphalt Mixture

2013 ◽  
Vol 438-439 ◽  
pp. 383-386
Author(s):  
Ning Li Li ◽  
Xin Po Zhao ◽  
Cai Li Zhang ◽  
Qing Yi Xiao ◽  
Hu Hui Li
Keyword(s):  
Low Temperature ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Asphalt Pavements ◽  
Flexural Test ◽  
Short Term ◽  
Modified Asphalt ◽  
Aging Test ◽  
Cracking Performance

This article studies the low-temperature anti-cracking properties of plain asphalt mixtures and rubber-modified asphalt mixtures at different aging condition. Laboratory flexural test was conducted on the beam specimens of plain asphalt mixtures and rubber-modified asphalt mixtures. Experiment results indicate that rubber-modified asphalt mixtures have superior low-temperature anti-cracking performance than that of plain asphalt mixtures. Compared with the short term oven aging test, the long term oven aging test has more significant effect on the low-temperature anti-cracking of the mixture. In order to better represent the low-temperature anti-cracking of in-service aging asphalt pavement, the long term oven aging test should be used to appraise the low-temperature anti-cracking of asphalt pavements in china.

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