Research on Large Partical Size and Porous Rubber Modified Asphalt Mixture Repairing Techniques Used in “White and Black” Pavement

2014 ◽  
Vol 1061-1062 ◽  
pp. 386-391
Author(s):  
Zhong Ping Yao ◽  
Zhen Bei Chen ◽  
Gong Liang Zhang ◽  
Meng Li
Keyword(s):  
Coarse Aggregate ◽  
Asphalt Mixture ◽  
Performance Characteristics ◽  
Modified Asphalt ◽  
The Road ◽  
Construction Scheme ◽  
Road Performance ◽  
Pavement Structure ◽  
And Performance ◽  
Partical Size

The paper Introduces the structure composition and performance characteristics of the large partical size and porous rubber modified asphalt mixture, analyses the road performance of mixtures, on the basis of the characteristics of higher proportion of coarse aggregate and poriness, puts forward the practical and feasible construction scheme. It will be a beneficial exploration for the development and application of the large partical size and porous rubber modified asphalt mixture in the "white and black" pavement structure.

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.

Interfacial Property of the Asphalt Concrete Pavement with Bonifiber Reinforced Overlayer

2011 ◽  
Vol 374-377 ◽  
pp. 1511-1514
Author(s):  
Yang Guo ◽  
Ying Hua Zhao
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
Primary Objective ◽  
Interfacial Property ◽  
Modified Asphalt ◽  
Interface Property ◽  
The Road ◽  
Shear Property ◽  
Road Performance ◽  
Pavement Structures

Fiber reinforcement as an available attempt has been proved to be effective in improving the toughness of asphalt concrete and is becoming a new method for highway maintenance. When fiber modified asphalt mixture is used as the surface course of a reconstructive pavement, the interface bonding property between top and lower layers seems to become a crucial factor in the road performance of the long lasting pavement. The primary objective of the research is to study the influence of fiber inclusions on the interfacial shear property of the pavement. With the purpose of discussing the shear strength of the interface between Bonifiber modified asphalt mixture top layer and the normal asphalt mixture layer，the laboratory shear test was developed on MTS-810. Four kinds of double-layered cylindrical specimens were made to simulate the different pavement structures. Test results show that the overlaying with Bonifiber modified asphalt mixture improves not only the general road performance but also the interface property. It is concluded that, the interface property of pavement with fiber reinforced top layer behaves much better than that with normal asphalt concrete one.

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.

Road Performance Study on Gap-Graded and Dense-Graded of Rubber Powder Particles Modified Asphalt Mixture

2014 ◽  
Vol 900 ◽  
pp. 499-504
Author(s):  
Yu Mao ◽  
Yang Liu ◽  
Pei Wen Hao ◽  
Hai Nian Wang
Keyword(s):  
Process Parameters ◽  
Performance Indicators ◽  
Asphalt Mixture ◽  
Performance Study ◽  
Airborne Dust ◽  
Rubber Powder ◽  
Modified Asphalt ◽  
The Road ◽  
Powder Particles ◽  
Road Performance

A new type of rubber powder particle modifier can be produced by adding some performance improvement additives into the normal 40-60 mesh rubber powder and re-granulation, it proved to have better performances and less airborne dust, mixing well with base asphalt. Researching the performance indicators of rubber powder particles modified asphalt under different process parameters through the adjustment of shear temperature, shear rate, shear time and dosage of rubber powder in the process of producing rubber powder particles modified asphalt, the optimal process parameters was determined, and the road performance indicators of the modified asphalt mixture has been verified.

scholarly journals The Influence of Eggshell as Coarse Aggregate Replacement in Hot Mix Asphalt

CONSTRUCTION ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 1-11
Author(s):  
Ng Cui Ming ◽  
Ramadhansyah Putra Jaya ◽  
Haryati Awang
Keyword(s):  
Hot Mix Asphalt ◽  
Coarse Aggregate ◽  
Asphalt Mixture ◽  
Aggregate Size ◽  
Modified Asphalt ◽  
The Road ◽  
Road Pavement ◽  
Road Users ◽  
Indirect Tensile ◽  
Pavement Structures

Hot Mix Asphalt (HMA) is the most commonly used in Malaysia for highways, interstates and roads due to its flexibility, economical, strong and provide safe riding quality for road users. Over the years, the increase of damage on pavement roads in Malaysia has become a severe issue although the road did not achieve its design life. Hence, to reduce damage and defect, an improvised road pavement structures is needed. Various studies have been conducted to identify the new materials that can be used as a replacement in hot mix asphalt. In this research, the purpose is to evaluate the performance of eggshell as coarse aggregate replacement in hot mix asphalt. The gradation for aggregate used in this mixture is AC14. The weight for total mixing of the aggregates used is 1200g while the grade for bitumen is 60/70. The samples were mixed with eggshell in the various percentages of 0%, 5%, 10%, 15% and 20% by total weight of aggregate size 5mm. The laboratory tests carried out to determine the properties of aggregates included, aggregate impact value and aggregate crushing value. Besides, penetration and softening point were also performed to determine the properties of bitumen. Several types of test were conducted towards the samples, which are Marshall Test, Indirect Tensile Strength and Cantabro Test. The results exhibit that the conventional asphalt mixture is more effective than modified asphalt mixture. The replacement of eggshell as coarse aggregate was not enough improvement to the performance of asphalt pavement as the performance of conventional mixture is more stable than modified mixture.

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 Micro- structure and rheological properties of graphene oxide rubber asphalt

2019 ◽  
Vol 8 (1) ◽  
pp. 227-235 ◽  
Author(s):  
Mei Lin ◽  
Zhao Li Wang ◽  
Ping Wen Yang ◽  
Ping Li
Keyword(s):  
Graphene Oxide ◽  
Rheological Properties ◽  
Heavy Traffic ◽  
Asphalt Mixture ◽  
Large Temperature ◽  
Pavement Materials ◽  
Modified Asphalt ◽  
The Road ◽  
Road Performance ◽  
Low Sensitivity

Abstract Compared with traditional materials, nanomaterial has rich and excellent performance due to the size advantages. If nanotechnology is combined with pavement materials, it is foreseeable that it will have a profound impact on the development of the road. In the study, graphene oxide nanomaterial was added as modifiers to rubber asphalt and its microstructure was characterized. The rheological properties of graphene oxide rubber asphalt and the road performance of asphalt mixture were studied in accordance with the SHRP test. The results showed that graphene oxide could form a dense and stable microstructure with rubber powder and asphalt polymer. As a modifier, it could improve the anti-rutting performance of rubber modified asphalt and was more suitable for heavy traffic. Moreover, it had low sensitivity to temperature and was more suitable for areas with large temperature difference between day and night. The pavement performance of the graphene oxide rubber asphalt mixture had also been greatly improved.

Experimental Study on Mix Ratio Design and Road Performance of Medium and Small Deformation Seamless Expansion Joints of Bridges

2021 ◽  
pp. 036119812098474
Author(s):  
Pengzhen Lu ◽  
Chenhao Zhou ◽  
Simin Huang ◽  
Yang Shen ◽  
Yilong Pan
Keyword(s):  
Traffic Safety ◽  
Performance Test ◽  
Asphalt Mixture ◽  
Small Deformation ◽  
Expansion Joint ◽  
Expansion Joints ◽  
Mixture Ratio ◽  
The Road ◽  
Marshall Test ◽  
Road Performance

Expansion joints are a weak and fragile part of bridge superstructure. The damage or failure of the expansion joint will lead to the decline of bridge durability and endanger the bridge structure and traffic safety. To improve the service life and performance of bridge expansion joints, the ideal method is to use seamless expansion joints. In this study, starting from the commonly used asphalt mixture gradation of seamless expansion joint, and taking into account the actual situation of bridge expansion joint structure and environment in China, the gradation and asphalt-aggregate ratio are preliminarily designed. Through a Marshall test, the corresponding asphalt mixture is evaluated and analyzed according to the stability, flow value, and void ratio, and the optimal gradation and asphalt-aggregate ratio are determined. Finally, the asphalt mixture is prepared with the mixture ratio design, and the test results of an immersion Marshall test, fatigue performance test, and full-scale test verify that the asphalt mixture meets the road performance requirements of seamless expansion joints. On the basis of the experimental data, the performance of large sample asphalt mixture is continuously tested, compared, and optimized. The results show that the asphalt mixture ratio designed is true and reliable, which can provide reference for the optimal design of seamless expansion joint filler.

Investigation of the Performance of Basalt Fiber Reinforced Asphalt Mixture

2020 ◽  
Vol 10 (5) ◽  
pp. 1561 ◽  
Author(s):  
Hua Zhao ◽  
Bowen Guan ◽  
Rui Xiong ◽  
Aiping Zhang
Keyword(s):  
Asphalt Mixture ◽  
Basalt Fiber ◽  
Polyester Fiber ◽  
Fiber Reinforced ◽  
The Road ◽  
Water Sensitivity ◽  
Temperature Performance ◽  
Splitting Test ◽  
Road Performance ◽  
Marshall Stability

This study is focused on the effect of basalt fiber on the road performance of the asphalt mixture. The road performance of asphalt mixture with different dosages of basalt fiber was comprehensively evaluated using Marshall Stability test, the wheel tracking test, the three-point bending beam test and the freezing-thaw splitting test. The road performance of lignin fiber reinforced asphalt mixture and polyester fiber reinforced asphalt mixture also were tested to compare with the road performance of basalt fiber reinforced asphalt mixture. The results showed that basalt fiber can enhance mechanical properties, the low-and high-temperature performance and water sensitivity of the asphalt mixture significantly. Considering the road performance and economic benefits, the appropriate dosage of basalt fiber is about 0.3%. Marshall Stability (MS), dynamic stability (DS), the maximum bending strain and the tensile strength ratio (TSR) of asphalt mixture with 0.3% basalt fiber were increased by 19.6%, 25.5%, 22.2% and 6.0%, respectively. Basalt fiber has certain advantages in improving the low-temperature performance of asphalt mixture by comparison with lignin fiber and polyester fiber.

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