Performance analysis of different type preventive maintenance materials for porous asphalt based on high viscosity modified asphalt

2018 ◽  
Vol 191 ◽  
pp. 320-329 ◽  
Author(s):  
Bin Xu ◽  
Mingliang Li ◽  
Shaohua Liu ◽  
Jing Fang ◽  
Runduo Ding ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Preventive Maintenance ◽  
High Viscosity ◽  
Porous Asphalt ◽  
Modified Asphalt

Laboratory Investigation of the Adhesion and Self-Healing Properties of High-Viscosity Modified Asphalt Binders

2020 ◽  
Vol 2674 (1) ◽  
pp. 307-318 ◽  
Author(s):  
Mingjun Hu ◽  
Daquan Sun ◽  
Tong Lu ◽  
Jianmin Ma ◽  
Fan Yu
Keyword(s):  
Water Immersion ◽  
Gel Permeation Chromatography ◽  
High Viscosity ◽  
Healing Time ◽  
Adhesion Property ◽  
Asphalt Binders ◽  
Self Healing ◽  
Porous Asphalt ◽  
Modified Asphalt ◽  
Water Damage

Water damage often occurs on porous asphalt pavement during service life because of the well-developed pore structure. Determining the adhesion and adhesion healing properties of high-viscosity modified asphalt (HVMA) under water condition is beneficial to understand the water damage process of porous asphalt. In this study, the modified binder bond strength test was first conducted to investigate the adhesion property and self-healing behavior of HVMA at different conditions. Then, the surface energy test was carried out to further characterize the differences in adhesion property of HVMA. Moreover, the gel permeation chromatography test and fluorescence microscopic test were used to investigate the influence of chemical composition and polymer morphology on the adhesion property of HVMA. Results show that the presence of water reduces the adhesion property of HVMA. The addition of polymers leads to an increasing adhesion strength and a decreasing self-healing ability of HVMA. The self-healing ability of HVMA improves with the increase of temperature, but also shows a decreased trend when the healing time is long at high-temperature water immersion. The effect of polymers on the adhesion property of asphalt has two aspects. First, the swelling of polymers leads to an increasing content of polar heavy components in HVMA, thus enhancing polarity adsorption between asphalt and aggregate. Moreover, a polymer-centered interfacial diffusion layer can be formed during the adsorption of light components, which increases the overlapping area of structural asphalt between adjacent aggregates. This can also improve the adhesion property at the asphalt–aggregate interface.

scholarly journals REPRODUCTION OF HIGH VISCOSITY MODIFIED ASPHALT & RECLAMATION OF POROUS ASPHALT MIXTURES

2004 ◽  
Vol 9 ◽  
pp. 101-108 ◽  
Author(s):  
Takara OKOCHI ◽  
Satoru HORIGUCHI ◽  
Hiromitsu NAKANISHI ◽  
Teruhiko MARUYAMA
Keyword(s):  
High Viscosity ◽  
Asphalt Mixtures ◽  
Porous Asphalt ◽  
Modified Asphalt

scholarly journals Study on Compatibility and Rheological Properties of High-Viscosity Modified Asphalt Prepared from Low-Grade Asphalt

Materials ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 3776 ◽  
Author(s):  
Mingliang Li ◽  
Feng Zeng ◽  
Ruigang Xu ◽  
Dongwei Cao ◽  
Jun Li
Keyword(s):  
High Temperature ◽  
Asphalt Mixture ◽  
Material Design ◽  
High Viscosity ◽  
Low Grade ◽  
Local Climate ◽  
Porous Asphalt ◽  
Modified Asphalt ◽  
Before And After ◽  
High Temperature Condition

High-viscosity modified asphalt is mainly used as a binder for porous asphalt in China and Japan. In order to meet the demand for using porous asphalt under high temperature condition in Africa, high-viscosity asphalt made from low-grade matrix asphalt, which is commonly used in Africa is investigated. Based on simulation of local climate in Africa, the suitable range of high viscosity additive content for different matrix asphalt was obtained by analyzing dynamic viscosity of the asphalt. Through PG high temperature grading, multi-stress repeated creep, accelerated fatigue, temperature sweep and other tests, changes of high temperature, anti-fatigue and anti-shear indicators before and after modification were compared and analyzed and effects of different matrix asphalt were also studied. Finally, considering engineering requirements, mixing and compaction temperatures of various high-viscosity modified asphalt were determined through study of viscosity-temperature characteristics. This research provides a support for preparation of high-viscosity modified asphalt and porous asphalt mixture by using low grade asphalt. The research achievements can help to guide the material design and application of porous asphalt in Africa and other high temperature areas.

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