Effect of Warm Mix Addictive EC120 on Asphalt Performance

2014 ◽  
Vol 694 ◽  
pp. 123-126
Author(s):  
Xian Yuan Tang ◽  
Jia Xi Deng ◽  
Hong Bo Zhang ◽  
Jie Xiao
Keyword(s):  
High Temperature ◽  
Softening Point ◽  
Temperature Stability ◽  
Performance Tests ◽  
High Temperature Stability ◽  
Modified Asphalt ◽  
Paving Asphalt ◽  
Cracking Performance ◽  
Polymer Modified Asphalt ◽  
Asphalt Performance

In order to study the effect of warm mix addictive EC120 on asphalt performance, tests on asphalt density, penetration degree, softening point and ductility were carried out through adding various contents of EC120 to 70# paving asphalt (A grade) and SBS I-D polymer modified asphalt. The results indicate that when adding 3% content of EC120, the modification effect for these two kinds of asphalts is the best. The penetration degree of 70# paving asphalt decreases greatly than that for SBS polymer modified asphalt, but softening point increases small. The warm mix agent EC120 can improve the high-temperature stability and low-temperature anti cracking performance of asphalt. It has wide application prospect.

Analysis on the Impact of the Type and Content of SBS on the Performance of the Modified Asphalt Mixture

2014 ◽  
Vol 919-921 ◽  
pp. 1079-1084 ◽  
Author(s):  
Sen Han ◽  
Dong Yu Niu ◽  
Ya Min Liu ◽  
De Chen ◽  
Deng Wu Liu
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Pavement Performance ◽  
High Temperature Stability ◽  
Moisture Susceptibility ◽  
Modified Asphalt ◽  
Cracking Performance ◽  
Sbs Modified Asphalt

The types and contents of styrene-butadiene-styrene (SBS) modifier are two important factors of SBS modified asphalt mixtures. Nowadays, SBS are extensively utilized to modified asphalt in order to improve the performance of the flexible pavement. The objective of this study is to determine a best selection of types and contents of SBS modifier, which can improve high-temperature stability; low-temperature anti-cracking performance and moisture susceptibility of SBS modified asphalt mixture. The mixtures with four types of SBS (Linear A, Linear B, Star A, Star B) and the different contents of each type SBS including Linear SBS of 0%, 3%, 4%, 4.5% and Star SBS of 0%, 3%, 3.5%, 4%, were evaluated for the pavement performance of them under laboratory conditions. Wheel tracking test, beam bending test and freeze-thaw tensile strength test were chosen and carried out to determine high-temperature stability, low-temperature anti-cracking performance and the moisture susceptibility respectively. The laboratory testing results indicate that Star SBS show the more effective effects than Linear SBS to improve the high-temperature stability, low-temperature anti-cracking performance and moisture susceptibility of SBS modified asphalt mixture, and the optimum content of SBS can also play a key role the improvement of the pavement performance.

Study on Performance of Rubber Powder Modified Asphalt Mixture

2014 ◽  
Vol 599 ◽  
pp. 252-256 ◽  
Author(s):  
Yan Shuang Zhang ◽  
Quan Liang Li ◽  
Jian Zhong Dong ◽  
Qing Hu Zhang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Key Words ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Performance Study ◽  
High Temperature Stability ◽  
Rubber Powder ◽  
Modified Asphalt ◽  
Asphalt Performance

Through the asphalt performance experiment, obtains the best proportion of rubber powder. Through the contrast test of asphalt mixture, the water sensibility, high temperature stability and low temperature stability of asphalt mixture have been studied. Key words: rubber powder modified asphalt asphalt mixture performance study

A Study of Polyurethane Rubber Composite Modified Asphalt Mixture

2014 ◽  
Vol 941-944 ◽  
pp. 324-328 ◽  
Author(s):  
Zhong Ping Yao ◽  
Meng Li ◽  
Wei Liu ◽  
Zhen Bei Chen ◽  
Rong Hui Zhang
Keyword(s):  
High Temperature ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
High Temperature Stability ◽  
Damage Resistance ◽  
Modified Asphalt ◽  
Rubber Composite ◽  
Marshall Test ◽  
Composite Modification ◽  
Temperature Crack

Use polyurethane rubber composite modified asphalt.Through the Marshall test and rutting test, test of polyurethane rubber asphalt mixture high temperature stability, low temperature crack resistance and water damage resistance, verify the composite modification advantages.

scholarly journals Study on Laboratory Experimental Pavement Performances of SEAM Modified Asphalt Mixture

2019 ◽  
Vol 136 ◽  
pp. 03010
Author(s):  
Ma Qingna ◽  
Zhao Zhiqin ◽  
Xu Qian ◽  
Sun Feng
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Water Stability ◽  
High Temperature Stability ◽  
Modified Asphalt ◽  
The Road ◽  
Road Performance ◽  
Property Index

Adding sulphur dilution asphalt modifier SEAM to asphalt mixture is not only a modifier of asphalt mixture, but also an additive of asphalt mixture. When the modifier is added into the asphalt mixture, the road performance of the asphalt mixture can be improved. This paper studies SEAM modified asphalt mixture the Marshall property index, temperature stability, Water stability and fatigue feature in the Laboratory. On the based of the result of the experiment and analysis, SEAM can improve the high temperature stability, Water stability and fatigue feature. But the low temperature stability can’t improve.

Performance Evaluation and Comparison of Spraying Modified Asphalt in Rigid-Flexible Composite Pavement Interlayer

2013 ◽  
Vol 703 ◽  
pp. 86-89
Author(s):  
Zhao Hui Liu ◽  
Jing Yi Zhang ◽  
Ting Zhou ◽  
Sheng Li
Keyword(s):  
High Temperature ◽  
Temperature Stability ◽  
Crumb Rubber ◽  
Adhesive Property ◽  
Fatigue Performance ◽  
High Temperature Stability ◽  
Medium Temperature ◽  
Modified Asphalt ◽  
Stability Performance ◽  
Rubber Composite

Focus on destruction features of the rigid-flexible composite pavement interlayer, Crumb rubber modified asphalt, SBS and crumb rubber composite modified asphalt, SBS modified asphalt were prepared. High temperature stability performance, medium-temperature fatigue performance and adhesive property of three knds of interlaminar material were evaluated and compared. Test results show that high temperature PG grade of SBS and crumb rubber composite modified asphalt is PG82, which showed better high temperature stability. Moreover, crumb rubber modified asphalt has more soft at normal temperature which benefited to medium-temperature fatigue performance. Besides, SBS and crumb rubber composite modified asphalt possesses better interlaminar adhesive property with 60°C viscosity is 2430Pas. So SBS and crumb rubber composite modified asphalt is recommend as spraying asphalt material in rigid-flexible composite pavement interlayer, the results can provide certain reference.

Performance Evaluation of BRA Modified Asphalt Mastic Based on Analysis of Microstructure and Rheological Mechanics Property

2011 ◽  
Vol 243-249 ◽  
pp. 4119-4124 ◽  
Author(s):  
Long Wen ◽  
Xiao Jiang Wang ◽  
Hao Liu ◽  
Hao Xiang Wu ◽  
Bao Lin Cui ◽  
...  
Keyword(s):  
High Temperature ◽  
Environmental Scanning Electron Microscopy ◽  
Temperature Stability ◽  
High Viscosity ◽  
Environmental Scanning ◽  
High Temperature Stability ◽  
X Ray ◽  
Modified Asphalt ◽  
Asphalt Mastic ◽  
Performance Grade

Buton rock asphalt (BRA) is possessed of both performance and economic advantages. In order to reveal the modification mechanism, X-ray diffraction experiment (XRD), X-ray fluorescence spectrum analysis and environmental scanning electron microscopy experiment (ESEM) are used to study on microstructure of BRA in this paper. It demonstrates that BRA can extremely adsorb free bitumen due to abundant microscopic pores, which consists of 70~80 percent Buton rock (BR) minerals and 20~30 percent pure rock asphalt (RA). RA with high viscosity is strongly adsorbed internal and outer of the surface of BR, which has high alkaline pH, high crystallization and strong surface activity. Then a special microstructure named “RA~BR” blend with stable property and strong spalling-resistance capability develops. Meanwhile, dynamic stability rheology test (DSR) is employed to study on the rheological mechanics property of BRA modified asphalt mastic. The high temperature performance grade (PG) level of BRA modified asphalt mastic with different mixing content is determined. The reasonable mixing content of BRA in matrix asphalt is 20~30 percent. The research proves that BRA modified asphalt possesses wonderful high temperature stability and has broad prospects for pavement application.

scholarly journals Preparation and Performance Analysis of High-Viscosity and Elastic Recovery Modified Asphalt Binder

2019 ◽  
Vol 2019 ◽  
pp. 1-16 ◽  
Author(s):  
Liangchen Qu ◽  
Yingli Gao ◽  
Hui Yao ◽  
Dandan Cao ◽  
Ganpeng Pei ◽  
...  
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Elastic Recovery ◽  
Asphalt Binder ◽  
Temperature Stability ◽  
Crumb Rubber ◽  
High Viscosity ◽  
High Temperature Stability ◽  
Modified Asphalt ◽  
And Performance

This study presented the preparation and performance of a kind of high viscosity and elastic recovery asphalt (HVERA) by using some modifiers. The performance of styrene-butadiene-styrene (SBS), rock asphalt (RA), crumb rubber (CR), and stabilizing agent (SA) for different modifiers was investigated by conventional binder test. Effects of modifiers on the high- and low-temperature properties of HVERA were investigated. The dynamic viscosity (DV) test, dynamic shear rheometer (DSR), and bending beam rheometer (BBR) analysis indicated that the high- and low-temperature rheological properties of asphalt were improved attribute to the addition of mixture of modifiers. Meanwhile, the short-term aging and long-term aging were simulated by rolling thin film oven (RTFO) and pressure aging vessel (PAV) tests. Furthermore, the Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) measurements were conducted for obtaining the mechanism and microstructure distribution of the modified asphalt binders. From the test results in this study, it was evident that the addition of SBS, RA, CR, and SA into a neat asphalt binder could both significantly improve the viscosity of the binder at high temperature and lower the creep stiffness at low temperature, which was beneficial to better both high-temperature stability and low-temperature cracking resistance of asphalt pavements. It was proved that the high temperature grade of HVERA could be increased by increasing of RA and a proper percentage of modifiers could be improved by the low temperature grade of HVERA.

Research on Aging Performance of AH-90 and PG70-28SBS Modified Asphalt

2021 ◽  
Vol 891 ◽  
pp. 211-217
Author(s):  
Huan He
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Ultraviolet Radiation ◽  
Thermal Oxidation ◽  
Viscosity Index ◽  
Temperature Stability ◽  
High Temperature Stability ◽  
Modified Asphalt ◽  
Temperature Susceptibility ◽  
Aging Performance

This paper studied the aging effect of the rolling thin film oven test (RTFOT) , pressurized aging vessel (PAV) and natural ultraviolet radiation aging method on AH-90 and PG70-28 asphalts. penetration degree , penetration degree index,softening point and ductility tests were used to evaluate the high temperature stability, low temperature split and temperature susceptibility of the two aged asphalts , it is pointed that the aging damaged the low temperature performance of the asphalts, improved the high temperature stability and the temperature susceptibility of the asphalts. Compared with the AH-90 asphalt, PG70-28 modified asphalt has better aging performance. The antiaging property and temperature susceptibility of two asphalts after ultraviolet photooxidation and thermal oxidation , were investigated by testing their viscosity index , antiaging index. which indicated that the viscosity index is correlative nearly with the penetration degree index and the influence of 10.5 kJ·cm-2 ultraviolet photooxidation on asphalt performance is more serious than PAV thermal oxidation. The results indicate that ultraviolet photooxidation research on asphalt is necessary in the intensive ultraviolet radiation region of Neimeng.

Research on the Paving Performance of Montmorillonite/SBS Modified Asphalt Mixtures

2012 ◽  
Vol 204-208 ◽  
pp. 4143-4146
Author(s):  
Zhong Guo He ◽  
Xin De Tang ◽  
Wen Jun Yin ◽  
Yi Fan Sun ◽  
Zhong Bo Liu
Keyword(s):  
High Temperature ◽  
Physical Properties ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
High Temperature Stability ◽  
Moisture Susceptibility ◽  
Modified Asphalt ◽  
Sbs Modified Asphalt ◽  
Enhanced Stability

Montmorillonite/SBS composite modifed asphalts were prepared by mixing montmorillonite with SBS-modified asphalt, further the corresponding asphalt mixtures were obtained. The paving technical indexes of the mixture such as physical properties, moisture suscepyibility, and high temperature stability were tested, and compared with that of the corresponding SBS-modifed asphalt mixture and base asphalt mixture. The results demonstrate that the montmorillonite/SBS composite modifed asphalt mixture exhibites enhanced stability, improved flow value and moisture susceptibility, and increased high temperature stability.

Study on High Temperature Performance of Asphalt Mixture Based on Rutting Test

2015 ◽  
Vol 744-746 ◽  
pp. 1316-1319
Author(s):  
Yi Wang ◽  
Wei Li
Keyword(s):  
High Temperature ◽  
Asphalt Mixture ◽  
Aggregate Size ◽  
Temperature Stability ◽  
Maximum Aggregate Size ◽  
Test Results ◽  
High Temperature Stability ◽  
Modified Asphalt ◽  
Temperature Performance ◽  
Nominal Size

In order to deeply reveal the high temperature stability of asphalt mixture, rutting test was implemented to evaluate the high temperature stability of asphalt mixture, and the evaluation index is dynamic stability. The effect of asphalt type, degree of compaction, gradation type and nominal maximum aggregate size on rutting test results was studied respectively. The results showed that: modified asphalt can improve the high temperature stability of asphalt mixture effectively; the anti-rutting performance of asphalt mixture reduces gradually with decrease of the degree of compaction; the anti-rutting performance of SAC-16 is greater than that of AC-16; and the anti-rutting performance of asphalt mixture is improved with increase of the nominal size of aggregate.

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