Research on Perfomance of Vulcanized Eucommia Ulmoides Gum Blending with Asphalt

2012 ◽  
Vol 535-537 ◽  
pp. 1652-1656 ◽  
Author(s):  
Zhi Gang Li ◽  
Yue Zhao
Keyword(s):  
Asphalt Binder ◽  
Engineering Application ◽  
High Price ◽  
Eucommia Ulmoides ◽  
Temperature Performance ◽  
Basic Index ◽  
Eucommia Ulmoides Gum ◽  
Economic Requirement ◽  
Engineering Characteristic ◽  
Physical Mechanics

Asphalt modifier is traditionally obtained from petroleum byproduct, which has a high price and can not regenerate. This makes the traditional asphalt modifier not able to satisfy the economic requirement of increasing highway construction. Therefore, it is necessary to find a new modifier, which is economically efficient and also has good engineering performance. This paper introduces a recent development on the vulcanizing process of eucommia ulmoides gum（EUG） and the physical mechanics function of vulcanized gum, and explains its desirable engineering characteristic as well as its engineering application foreground. In this study, based on the characteristic of rubber-plastic unified material chart, vulcanized EUG is blended with asphalt binder as a modifier. The analysis of infrared spectrum and scan electricity mirror and asphalt basic index experiment are made. The result indicates that vulcanized EUG can improve both low temperature performance and high temperature performance of asphalt, which means that it is a feasible and desired choice for asphalt modifying.

Study on Vulcanizing and Asphalt Modifying of Eucommia Ulmoides Gum

2014 ◽  
Vol 488-489 ◽  
pp. 765-768 ◽  
Author(s):  
Zhi Gang Li ◽  
Cong Li
Keyword(s):  
Mechanical Properties ◽  
Engineering Application ◽  
Physical And Mechanical Properties ◽  
Eucommia Ulmoides ◽  
Low Carbon ◽  
Crosslinking Degree ◽  
New Approach ◽  
Pavement Materials ◽  
Modified Asphalt ◽  
Eucommia Ulmoides Gum

How to exploiture and apply environmentally friendly and low carbon asphalt modifier is one of technicality problems which are exigent to solved in highway construction. Based on the introduction of vulcanizing process of eucommia ulmoides gum (EUG) and the physical and mechanical properties of vulcanized gum, and the explains of its desirable engineering characteristics as well as its engineering application foreground.,the new approach is presented to use modified asphalt which is a blend of vulcanized EUG and asphalt as new pavement materials of highway. With sweep electron microscope (SEM) and analysis on the improvements of the asphalt`s performance, the best crosslinking degree of asphalt modified vulcanized EUG was studied, and the result indicates that vulcanized EUG has a range of the best crosslinking degree. When the crosslinking degree of vulcanized EUG reaches the range, the vulcanized EUG can improve asphalt`s performances in both low temperature and high temperature, which means it is feasible to use vulcanized EUG for asphalt modifying.

Investigating the influence of carbon nanotube on the performance of asphalt binder

2021 ◽  
pp. 147776062110194
Author(s):  
Peerzada Mosir Shah ◽  
Mohammad Shafi Mir
Keyword(s):  
High Temperature ◽  
Asphalt Binder ◽  
Storage Condition ◽  
Modified Bitumen ◽  
Creep And Recovery ◽  
Low Viscosity ◽  
Temperature Performance ◽  
Modified Asphalt Binder ◽  
Viscosity Grade ◽  
The Impact

The purpose of this study aims at investigating the impact of multi-walled carbon nanotubes (MWCNT’s) on the properties of low viscosity grade asphalt binder. Asphalt binder with viscosity grade-10 is selected as the control binder and later it is modified with different percentages of MWCNT’s (0.5–2.5%). Penetration, softening point, ductility and rotational viscosity test were employed for evaluating the effect of MWCNT’s on basic physical properties of modified asphalt binder. Dynamic Shear Rheometer (DSR) is used for evaluating the rheological properties of the base and modified bitumen, for both aged and unaged bitumen. Based on the conventional and basic rheological tests, it was seen that the addition of MWCNT’s improved the high-temperature performance of modified bitumen. Multiple Stress Creep and Recovery (MSCR) test results revealed that the addition of MWCNT’s improved the creep and recovery of modified binders for both stress intensities (0.1 kPa and 3.2 kPa) which confirms that the modified binder is more rut resistant. Moreover, it was observed that there was a significant improvement in the aging resistance of the asphalt binder due to addition of MWCNTs. However low temperature performance of MWCNTs was not encouraging. Also, MWCNTs addition to asphalt binder was found to be stable under high-temperature storage condition. Overall, there is a significant amount of improvement using MWCNTs in the base asphalt binder.

scholarly journals Damping performance of Eucommia ulmoides gum

2010 ◽  
Vol 29 (2) ◽  
pp. 157-163 ◽  
Author(s):  
Ji-chuan Zhang ◽  
Zhao-hong Xue ◽  
Rui-fang Yan
Keyword(s):  
Eucommia Ulmoides ◽  
Eucommia Ulmoides Gum

scholarly journals Effects of WMA Additive on the Rheological Properties of Asphalt Binder and High Temperature Performance Grade

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Jiupeng Zhang ◽  
Guoqiang Liu ◽  
Li Xu ◽  
Jianzhong Pei
Keyword(s):  
Critical Temperature ◽  
Rheological Properties ◽  
Asphalt Binder ◽  
Aging Effect ◽  
Asphalt Binders ◽  
Short Term ◽  
Performance Grade ◽  
Temperature Performance ◽  
Effects Of Temperature ◽  
Increasing Temperature

Sasobit additives with different dosages were added into 70# and 90# virgin asphalt binders to prepare WMA binders. The rheological properties, includingG∗andδ, were measured by using DSR at the temperature ranging from 46°C to 70°C, and the effects of temperature, additive dosage and aging onG∗/sin⁡δ, critical temperature, and H-T PG were investigated. The results indicate that WMA additive improvesG∗but reducesδ, and the improvement on 70# virgin binder is more significant.G∗/sin⁡δexponentially decreases with the increasing temperature but linearly increases with the increasing additive dosage. Aging effect weakens the interaction between binder and additive but significantly increases the binder’s viscosity; that is whyG∗/sin⁡δis higher after short-term aging. In addition, the critical temperature increases with the increasing additive dosage, and the additive dosage should be more than 3% and 5% to improve H-T PG by one grade for 70# and 90# virgin binder, respectively.

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