The Research on SEAM Modified Asphalt under Low Temperature

2012 ◽  
Vol 557-559 ◽  
pp. 850-853
Author(s):  
Ning Zhao ◽  
Yu Long Liu ◽  
Gen Hui Gao
Keyword(s):  
Low Temperature ◽  
Bending Test ◽  
Modified Asphalt ◽  
Splitting Test

Sulfur Extended Asphalt Modified (SEAM) is a newly developed asphalt modifier. The principal purpose of this paper is to study the performance of SEAM modified asphalt under the low temperature. Through the Low-temperature splitting test and the Low-temperature bending test .It indicated that the SEAM enhances the performance of asphalt under the low temperature.

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.

scholarly journals Investigation of the Performance of Ceramic Fiber Modified Asphalt Mixture

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Xiushan Wang ◽  
Hengyu Zhou ◽  
Xingxing Hu ◽  
Senjie Shen ◽  
Bowen Dong
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Asphalt Mixture ◽  
Microscopic Analysis ◽  
Asphalt Mixtures ◽  
Bending Test ◽  
Ceramic Fiber ◽  
High Temperature Stability ◽  
Modified Asphalt ◽  
Splitting Test

Ceramic fiber (CF) is a novel thermally resistant material with the potential to improve the high-temperature performance of asphalt mixture. In this study, asphalt mixtures with 0%, 0.1%, 0.2%, 0.3%, 0.4%, and 0.5% CFs were prepared. The Marshall test, wheel tracking test, Marshall immersion test, freeze-thaw splitting test, and low-temperature bending test were conducted to evaluate the performance of the CF-modified asphalt mixture. The morphologies of these asphalt mixtures were observed using scanning electron microscopy to analyze the modification mechanism. The results showed that the CFs could improve the mechanical properties, high-temperature stability, moisture susceptibility, and low-temperature cracking resistance of asphalt mixture, with the optimum CF content being 0.4%. Further microscopic analysis showed that the CFs improved the performances of asphalt mixture through forming three-dimensional network structure, asphalt absorption, bridging cracks, and pulling-out effect.

scholarly journals Improving the Low-Temperature Performance of RET Modified Asphalt Mixture with Different Modifiers

Coatings ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1070
Author(s):  
Cheng Xu ◽  
Zhengqi Zhang ◽  
Feifei Liu
Keyword(s):  
Low Temperature ◽  
Asphalt Mixture ◽  
Bending Test ◽  
Creep Recovery ◽  
Dry Process ◽  
Modified Asphalt ◽  
Temperature Performance ◽  
Comparison Results ◽  
Beam Bending ◽  
Low Temperature Performance

To improve the low-temperature performance of RET (Reactive Elastomeric Terpolymer) modified asphalt mixture (RETM), polyurethane prepolymer (PUP) was used by wet process, ground waste rubber (GWR) and fibers were used by dry process. Tests of force ductility, bending beam rheometer (BBR), differential scanning calorimeter (DSC), viscosity and multiple stress creep recovery (MSCR) were conducted to study the effects of PUP on the performance of RET modified asphalt (RETA), and beam bending test was conducted to study the effects of GWR and fibers on the performance of RETM. Then, tests of beam bending, wheel tracking, Marshall immersion, freeze-thaw splitting, and economic analysis were further conducted to compare the performance and economy of RETM modified with optimum modifiers suggested. All modifiers improve the low-temperature performance of RETM. PUP content, the content and size of GWR and the content and type of fibers significantly affect the performance of RETA or RETM respectively. After analysis, 10% PUP, 2.1% 80 mesh GWR and 0.2% polyester (PE) fiber are considered as the optimum modifiers, respectively. Comparison results show that optimum modifiers variously improve the low-temperature performance, rutting resistance and moisture susceptibility of RETM, but they slightly reduced the economy of RETM. Comprehensive evaluation shows that 2.1% 80 mesh GWR and 10% PUP are better than 0.2% PE fiber.

The Influence of Coarse and Fine Ratio on ATB Asphalt Mixture Performance

2014 ◽  
Vol 587-589 ◽  
pp. 1276-1280
Author(s):  
Xiang Fei Zhai
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Bending Test ◽  
High Temperature Stability ◽  
Freeze Thaw ◽  
Splitting Test ◽  
Degree Of Stability ◽  
Stable Performance

Through the freeze-thaw splitting test, rutting test, low temperature bending test, comprehensive analysis the affect of coarse and fine ratio on ATB asphalt mixture performance. The results showed that: the ratio of change have a significant effect on water stability, high temperature stability, low temperature stability. Reasonable coarse and fine ratio have a higher degree of stability; Smaller coarse and fine ratio can effectively improve the asphalt mixture water stable performance, with coarse and fine ratio increased, freeze-thaw splitting strength ratio decreases; Larger coarse and fine ratio have an adverse effect on the high temperature stability, dynamic stability after the first increase and then decrease with increasing coarse and fine ratio; Smaller coarse and fine ratio can significantly improve the low temperature stability.

The Effect of Steel Fiber on the Road Performence of Asphalt Concrete

2014 ◽  
Vol 584-586 ◽  
pp. 1342-1345 ◽  
Author(s):  
Jie Fei Guo
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Asphalt Concrete ◽  
Steel Fiber ◽  
Heavy Traffic ◽  
Reference Value ◽  
Bending Test ◽  
The Road ◽  
Splitting Test ◽  
On The Road

In order to solve the problems relevant to asphalt concrete,such as cracking in low temperature, bleeding in high temperature and water damage,this paper put forward the ideal incorporation of steel fiber with asphalt concrete to reinforce the pavement performance and service life.By analyzing the test results such as rutting test, low temperature bending test,freeze-thaw splitting test and comparing with the stability in high temperature, anti-cracking performance in low temperature and the water stability between steel fiber asphalt concrete and the ordinary asphalt concrete,we can conclude that adding steel fiber with asphalt concrete can significantly improve the performance of road.This paper has reference value for choosing asphalt pavement in areas of low temperature and heavy traffic.

Performances Comparison of Mine Filler Asphalt Mortar and Diatomite Asphalt Mortar

2013 ◽  
Vol 361-363 ◽  
pp. 1861-1864 ◽  
Author(s):  
Yong Chun Cheng ◽  
Hui Li Ma ◽  
Jian Ping Huang ◽  
Peng Zhang ◽  
Jing Lin Tao
Keyword(s):  
Low Temperature ◽  
Temperature Sensitivity ◽  
Asphalt Concrete ◽  
Apparent Viscosity ◽  
Softening Point ◽  
Mechanical Performance ◽  
Bending Test ◽  
Mixing Ratio ◽  
Modified Asphalt ◽  
Asphalt Mortar

In order to study the different influences of mine filler and diatomite on asphalt mortar performance, asphalt mortars with 7% mix amount of mine filler and diatomite were tested for apparent viscosity at 135°C, penetration value at 25°C, and softening point. PI and PVN were used to evaluate the temperature sensitivity of the two kinds of asphalt mortars as well. Further, asphalt mortar bending test at low temperature were done to verify the good mechanical performance of diatomite asphalt mortar. Results indicate that, compared to mine filler, diatomite has stronger modified effect on asphalt, including apparent viscosity, penetration and softening point. And diatomite is more conducive to weakening temperature sensitivity of asphalt mortar. In addition, bending test indicates that diatomite asphalt mortar is more conducive to upgrade low temperature performance. Thus, it is significant for the preparation of diatomite modified asphalt concrete on the design of grade mixing ratio, so as to be conducive to promoting the use of diatomite modified asphalt concrete.

Performance Evaluation of Warm Recycled SBS Modified Asphalt Mixture

2014 ◽  
Vol 1065-1069 ◽  
pp. 771-777
Author(s):  
Rui Tian ◽  
Shi Fa Xu ◽  
Zhi Suo ◽  
Guang You Yuan
Keyword(s):  
Low Temperature ◽  
Water Immersion ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Bending Test ◽  
High Temperature Stability ◽  
Test Beam ◽  
Modified Asphalt ◽  
Recycling Technology ◽  
Sbs Modified Asphalt

The reclaimed asphalt pavement (RAP) materials with aged SBS bitumen were limited to applied in unmodified asphalt mixture for low level pavement structure by conventional recycling technology. To overcome this, a new recycling procedure was developed to recover the aged SBS RAP as modified asphalt mixture by warm mixing technology. The Marshall method was applied to design Warm Recycled SBS modified Asphalt Mixture (WRMA) with different RAP content (0, 20%, 30%, 40% and 50%). the performance properties of WRMA and hot recycled SBS modified asphalt mixture (HRMA), such as the high temperature stability, water stability and low temperature performance, were evaluated by the rutting test, low-temperature creep test, beam bending test and water immersion Marshall test, respectively. From the testing results, the properties of WRMA was more than HRMA significantly, and the warm recycling technology could effectively increase the RAP content applied in recycled pavement materials.

Evaluation of Low Temperature Performance for Diatomite Modified Asphalt Mixture

2011 ◽  
Vol 413 ◽  
pp. 246-251 ◽  
Author(s):  
Yi Bo Zhang ◽  
Hong Zhou Zhu ◽  
Guo An Wang ◽  
Tuan Jie Chen
Keyword(s):  
Performance Evaluation ◽  
Low Temperature ◽  
Asphalt Mixture ◽  
Bending Test ◽  
Large Temperature ◽  
Index Test ◽  
Stiffness Modulus ◽  
Modified Asphalt ◽  
Temperature Performance ◽  
Low Temperature Performance

According to the low temperature disease on asphalt pavement in the areas of cold and large temperature difference between day and night, conventional index test and low temperature bending creep test were used to analyze the influence of diatomite dosage on the low temperature performance of diatomite modified asphalt, and the mixture’s low temperature bending test was applied for verification. Test results show that after diatomite’s addition into asphalt, equivalent brittle point reduces significantly, ductility test cannot estimate low temperature performance very well, stiffness modulus increases and relaxation ability decreases; meanwhile, peak value of stiffness modulus and strain energy of asphalt mixture can be found, the low temperature crack resistance is enhanced; optimum dosage of diatomite is 13%. So, the low temperature performance evaluation method of diatomite modified asphalt mixture through BBR’s low temperature performance evaluation on diatomite modified asphalt remains to be discussed.

scholarly journals Laboratory Study on the Performance of Asphalt Mixes Modified with a Novel Composite of Diatomite Powder and Lignin Fiber

2020 ◽  
Vol 10 (16) ◽  
pp. 5517 ◽  
Author(s):  
Moustafa Abdelsalam ◽  
Yanchao Yue ◽  
Ahmed Khater ◽  
Dong Luo ◽  
Josephine Musanyufu ◽  
...  
Keyword(s):  
Asphalt Pavement ◽  
Fiber Composite ◽  
Immersion Test ◽  
The Other ◽  
Bending Test ◽  
Asphalt Mixes ◽  
Modified Asphalt ◽  
Splitting Test ◽  
Cracking Performance ◽  
Asphalt Mix

The performance and the fundamental weaknesses of asphalt mix under environmental temperature and water effects have made researchers try to modify the asphalt mix properties by using the proper additives. For this reason, this paper aims to improve the anti-cracking performance and water stability of asphalt pavement by adding a novel composite of diatomite and lignin fiber in asphalt mixes. Four types of asphalt mixes, including control asphalt mix (CAM), diatomite modified asphalt mix (DMAM), lignin fiber modified asphalt mix (LFMAM), and diatomite-lignin fiber composite modified asphalt mix (DLFMAM) were prepared in the laboratory. Low-temperature bending test, Marshall Immersion test, and freeze-thaw splitting test were employed to evaluate the performance of the asphalt mixes. Results reveal that the use of the lignin fiber in reinforced asphalt mixes combined with diatomite led to an enhancement in the asphalt pavement performance more than the other three types of mixes. Diatomite has an important influence on the water damage resistance of asphalt mix more than lignin fiber. On the other hand, diatomite has a small effect on the anti-cracking performance; meanwhile, lignin fiber showed a significant improvement in the cracking resistance of asphalt mixes. DLFMAM has the best traveling performances among all asphalt mixes. Thus, this work provides a good reference for the design of composite asphalt mixes.

scholarly journals Research on the Impact of Recycled Asphalt Mixture on Road Performance Based on New Thermal Recycling

2022 ◽  
Vol 2152 (1) ◽  
pp. 012005
Author(s):  
Peng Yin ◽  
Yuanguang Xie ◽  
Huixi Lang
Keyword(s):  
Low Temperature ◽  
Correlation Analysis ◽  
Asphalt Mixture ◽  
Bending Test ◽  
Recycled Asphalt ◽  
Modified Asphalt ◽  
Temperature Performance ◽  
Road Performance ◽  
Low Temperature Performance ◽  
Sbs Modified Asphalt

Abstract Different binder content to RAP Regeneration SBS modified asphalt mixture for road performance to SBS modified asphalt (I-D type) as an index, determine the optimum dose of new heat regenerating agent and different RAP regeneration, and prepared different recycled asphalt, which have differences in RAP content. The performance of recycled asphalt mixture with different RAP content was evaluated by freeze-thaw splitting test. Rut test and Low temperature trabecular bending test. The correlation between RAP content and pavement performance was analyzed by grey system correlation analysis method. According to the experimental verification results, it can be known that increasing the content of RAP material can improve the high-temperature performance of reclaimed asphalt, but will result in a qualitative decrease in low-temperature performance and water temperature, but the above-mentioned performance can reach the required level, Shows that new heat regenerators play a role in the road performance of RAP materials, and for the RAP material utilization ratio of more than 50%, as for the gray correlation analysis, it can be found that there is a close correlation between the low-temperature performance of recycled asphalt mixture and the content of RAP material. The low temperature cracking resistance of asphalt mixtures will change significantly due to the slight changes in RAP materials.

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