Study on the Anti-Stripping Properties of Dry Rubber Modified Asphalt Mixture

2015 ◽  
Vol 727-728 ◽  
pp. 349-353
Author(s):  
Bo Peng ◽  
Wen Ying Li ◽  
Wei Gong ◽  
Guang Kai Yin
Keyword(s):  
Asphalt Mixture ◽  
Temperature Stability ◽  
Hydrated Lime ◽  
Engineering Practice ◽  
High Temperature Stability ◽  
Modified Asphalt ◽  
The Road ◽  
Rubber Particles ◽  
Road Performance

In the engineering practice dry rubber modified asphalt mixture is easy to strip due to the poor adhesion between the rubber particles and asphalt. This paper describes a case study where the rubber-modified asphalt mixture mixed with hydrated lime, cement to improve the adhesion between the asphalt and rubber particles, and improve the road performance of the mixture. Then the additive dosage was determined through laboratory experiment and the pavement performance was verified. The result showed that: the water stability and high temperature stability could be evidently improved with the asphalt mixture added with these anti-stripping agents. And asphalt mixture with 1.5% hydrated lime had the best anti-stripping performance.

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.

Road Performance of Warm-Mix Modified Bitumen Mixture with EC120

2014 ◽  
Vol 694 ◽  
pp. 118-122
Author(s):  
Jie Xiao ◽  
Zhi Fan Mo ◽  
Hong Xin Lu ◽  
Xian Yuan Tang
Keyword(s):  
Asphalt Mixture ◽  
Temperature Stability ◽  
High Temperature Stability ◽  
Modified Bitumen ◽  
Moisture Susceptibility ◽  
Modified Asphalt ◽  
The Road ◽  
Road Performance ◽  
The Common ◽  
Temperature Crack

A series of laboratory tests on warm-mix AC-13 dense gradation asphalt mixture with 3% EC120 were carried out by the method of identical volume. A comparative analysis of common hot asphalt mixture was performed. The results indicate that the reduction of compaction temperature of warm-mix modified bitumen mixture is 27.1°C with addition of 3% EC120. The road performances of warm-mix asphalt mixture determined by the method of identical volume satisfied the specification. Compared to the common hot asphalt mixture, the warm-mix modified asphalt mixture has excellent high temperature stability, slightly low moisture susceptibility and better low-temperature crack resistance.

The Analyze Study of Compacting Temperature and Road Performance of Warm Mix Asphalt Mixture (LEADCAP)

2013 ◽  
Vol 361-363 ◽  
pp. 1681-1688 ◽  
Author(s):  
Hai Sheng Zhao ◽  
Wei Chen ◽  
Xiao Yan Wang
Keyword(s):  
Low Temperature ◽  
Dynamic Modulus ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Organic Additive ◽  
Bending Test ◽  
High Temperature Stability ◽  
The Road ◽  
Indirect Tension ◽  
Road Performance

This paper used one kind of organic additive LEADCAP to reduce the compacting temperature of SBS WMA mixture, and compared the WMA mixture compacted by superpave gyratory compactor (SGC) with HMA mixture to determine the compacting temperature of WMA mixture. Rutting test, low temperature bending test, freeze-thaw indirect tension test, Hamburg Wheel-Track test and dynamic modulus were carried out to evaluate the road performance of WMA mixed with LEASCAP. The test result showed that the WMA mixed with LEADCAP had well performed high temperature stability, low temperature stability, water stability, rutting cracking resistance, and high dynamic modulus, the compacting temperature were 127 °C, and affectively reduced the compacting temperature of SBS WMA mixture.

scholarly journals Study on Properties of Drainage SBS Modified Asphalt Mixture with Fiber

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Zhenxia Li ◽  
Tengteng Guo ◽  
Yuanzhao Chen ◽  
Menghan Zhang ◽  
Qingyu Xu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Three Dimensional ◽  
Basalt Fiber ◽  
Temperature Stability ◽  
High Temperature Stability ◽  
Modified Asphalt ◽  
The Road ◽  
Sbs Modified Asphalt

In order to improve the road performance of drainage SBS modified asphalt mixture, basalt fiber was added to prepare drainage styrene-butadiene-styrene (SBS) modified asphalt mixture. The viscosity-toughness, toughness, and 60°C dynamic viscosity of SBS modified asphalt were tested. The modification effect was evaluated from the perspective of high and low temperature rheological properties by dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. The high temperature stability, water stability, low temperature crack resistance, and drainage of basalt fiber SBS drainage asphalt mixture were evaluated and compared with nonfiber SBS drainage asphalt mixture and TPS drainage asphalt mixture. The morphology characteristics of asphalt mixture and the distribution of basalt fiber in the mixture were analyzed from a micro perspective. The results showed the following: the overall performance of basalt fiber is better than that of lignin fiber. SBS modifier content in 7% can meet the requirements of drainage asphalt pavement on asphalt binder. The optimum asphalt content of SBS modified asphalt mixture with basalt fiber content of 0, 0.15, 0.25, and 0.35% is 4.9, 5.05, 5.15, and 5.2%. The fiber is irregularly distributed in the mixture to form a three-dimensional network structure, which has a series skeleton function. It plays a tensile role in the initial cracking of asphalt mixture and prevents further expansion of cracks.

scholarly journals Design method of the mix ratio of hot mix plant recycled asphalt mixture containing high mixture content

2021 ◽  
Vol 261 ◽  
pp. 02064
Author(s):  
Yunwu He ◽  
Tao Liu ◽  
Tao Wang ◽  
Xiayi Liang ◽  
Hanxin Wei ◽  
...  
Keyword(s):  
Design Method ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Water Stability ◽  
High Temperature Stability ◽  
Recycled Asphalt ◽  
The Road ◽  
Technical Requirements ◽  
Road Performance ◽  
Temperature Crack

This paper mainly used the Superpave and the Marshall design methods to design the mix ratio of the hot mix plant recycled asphalt mixture. The road performance of AC-20, SUP-20 with 30% RAP content and AC-20 with 50% RAP content was studied to evaluate the water stability and high temperature stability and low temperature crack resistance of the recycled asphalt mixture. Research shows that the road performance of AC-20 mixed with 50% RAP content meets the technical requirements of the same type of asphalt mixture. It is recommended to use the Marshall design method for hot mix plant recycled asphalt mixture design.

scholarly journals Road Performance of Calcium Sulfate Whisker and Polyester Fiber Composite-Modified Asphalt Mixture

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Xiushan Wang ◽  
Bowen Dong ◽  
Junjie Wang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Calcium Sulfate ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Polyester Fiber ◽  
High Temperature Stability ◽  
Modified Asphalt ◽  
Road Performance ◽  
Calcium Sulfate Whisker

In order to better improve the practical engineering problems such as rutting, cracking, pit, and groove in highway engineering, the stability and strength characteristics of calcium sulfate whisker and polyester fiber in asphalt mixture are evaluated based on the road performance test. In this experiment, three different methods of the calcium sulfate whisker content and three different polyester fiber content were used to determine the best asphalt aggregate ratio to prepare different modified asphalt mixture samples. Its high temperature stability, water stability, and low-temperature performance were tested. The results show that the composite modifier of calcium sulfate whisker and polyester fiber can significantly improve the strength stability of asphalt mixture and make its high temperature stability reach 2900.3∼4230.7 Times/mm without reducing its low-temperature bending strength. The optimum content of calcium sulfate whisker is in the range of 2‰∼2.5‰ and polyester fiber is in the range of 2‰∼3‰. The rutting strength and Marshall stability reach the maximum.

scholarly journals Research on Road Performance of Asphalt Mixture With Iron Waste Ore

2021 ◽  
Author(s):  
Aiping Fei ◽  
TIEZHI ZHANG ◽  
Zhongwei Ruan
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Waste Rock ◽  
High Temperature Stability ◽  
The Road ◽  
Stability Performance ◽  
Road Performance ◽  
The One ◽  
Residual Stability

Abstract In order to study the road performance of asphalt mixture with different kinds of iron waste ore , stripping waste rock rich in iron trioxide and stripping waste rock rich in iron oxide are used as aggregate to make the mixture.Through the test comparison, it is confirmed that the dynamic stability performance of asphalt concrete mixture mixed with iron trioxide mining and stripping waste rock is the best, namely its high temperature stability is best; followed by the one mixed with waste rock rich in iron trioxide. The residue stability of asphalt concrete mixed with mining and stripping waste rock increases obviously. It can found from the experiments that the residual stability can be up to 94.96% which kinds of asphalt mixture with waste rock rich in iron trioxide. Asphalt mixture mixed with stripping waste rock has a better anti-sliding performance than the common one, among which the one mixed with aggregates rich in iron trioxide is the best. Through tectonic depth, it is reflected that it also has a better performance on drainage noise reduction. In conclusion, using mining and stripping waste rock instead of mining gravel has a good economic efficiency,but also solved the problem of mining and stripping waste rock accumulation.

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.

Laboratory Study of Pavement Performance of Basalt Fiber-Modified Asphalt Mixture

2011 ◽  
Vol 266 ◽  
pp. 175-179 ◽  
Author(s):  
Yuan Xun Zheng ◽  
Ying Chun Cai ◽  
Ya Min Zhang
Keyword(s):  
Asphalt Mixture ◽  
Basalt Fiber ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
Polyester Fiber ◽  
Pavement Performance ◽  
High Temperature Stability ◽  
Modified Asphalt ◽  
And Control ◽  
Temperature Crack

In order to discuss the effect of the basalt fiber on reinforcing pavement performance of asphalt mixtures, the optimum dosage of asphalt and fibers were studied by the method of Marshall test and rut test firstly. Then pavement performances of basalt fiber-modified asphalt mixtures were investigated through tests of high temperature stability, water stability and low temperature crack resistance, and compared with that of polyester fiber, xylogen fiber and control mixture. The testing results showed that the pavement performance of fiber-modified asphalt mixture are improved and optimized comparing with control asphalt mixture, and the performance of basalt fiber-modified asphalt mixture with best composition were excelled than those of polyester fiber and xylogen fiber.

scholarly journals Microwave Absorption Ability of Steel Slag and Road Performance of Asphalt Mixtures Incorporating Steel Slag

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 663 ◽  
Author(s):  
Baowen Lou ◽  
Zhuangzhuang Liu ◽  
Aimin Sha ◽  
Meng Jia ◽  
Yupeng Li
Keyword(s):  
Microwave Absorption ◽  
Steel Slag ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
Microwave Absorber ◽  
Self Healing ◽  
High Temperature Stability ◽  
Road Performance ◽  
On The Road

Excessive usage of non-renewable natural resources and massive construction wastes put pressure on the environment. Steel slags, the main waste material from the metal industry, are normally added in asphalt concrete to replace traditional aggregate. In addition, as a typical microwave absorber, steel slag has the potential to transfer microwave energy into heat, thus increasing the limited self-healing ability of asphalt mixture. This paper aims to investigate the microwave absorption potentials of steel slag and the effect of its addition on road performance. The magnetic parameters obtained from a microwave vector network analyzer were used to estimate the potential use of steel slag as microwave absorber to heal cracks. Meanwhile, the initial self-healing temperature was further discussed according to the frequency sweeping results. The obvious porous structure of steel slag observed using scanning electron microscopy (SEM) had important impacts on the road performance of asphalt mixtures. Steel slag presented a worse effect on low-temperature crack resistance and water stability, while high-temperature stability can be remarkably enhanced when the substitution of steel slag was 60% by volume with the particle size of 4.75–9.5 mm. Overall, the sustainability of asphalt mixtures incorporating steel slag can be promoted due to its excellent mechanical and microwave absorption properties.

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