scholarly journals Study on the Performance of the Physical Foaming Warm-mix Recycled Asphalt Mixture

2021 ◽  
Vol 261 ◽  
pp. 02058
Author(s):  
Zheng Zhigang ◽  
He Yunwu ◽  
Wang Tao ◽  
Wei Hanxin ◽  
Liang Xiayi ◽  
...  
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Crack Resistance ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Water Stability ◽  
High Temperature Stability ◽  
Recycled Asphalt ◽  
Reclaimed Asphalt ◽  
Temperature Crack

In order to evaluate the performance of the physical foaming warm-mix recycled asphalt mixture (WRAM), the hot mix plant recycling technology was adopted to develop AC-20 hot-mix recycled asphalt mixture (HRAM) and the WRAM of different reclaimed asphalt pavement (RAP) contents. The high temperature stability, water stability and low temperature crack resistance performance of the reclaimed asphalt pavement were evaluated. The results indicate that the physical foaming WRAM feature better high temperature stability, water stability and low temperature crack resistance compared to those of HRAM. With the increase in RAP contents, the high temperature stability of the physical foaming WRAM and HRAM rises notably but the water stability and low temperature crack resistance performance continues to drop.

Study on Pavement Performance of High Volume Reclaiming Asphalt Mixture

2014 ◽  
Vol 1081 ◽  
pp. 260-264
Author(s):  
Wei Rong Huang ◽  
Ming Tan
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Crack Resistance ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
High Volume ◽  
Pavement Performance ◽  
Water Stability ◽  
High Temperature Stability ◽  
Temperature Crack

It was based on laboratory test, in order to study on the high temperature stability, water stability and low-temperature crack resistance of AC-16 reclaiming asphalt mixture with different proportion of old material, this test takes into account 9 kinds of these asphalt mixture. The results show, with the old material blending ratio increased, the high temperature stability of asphalt mixture changed for the better, water stability and low-temperature crack resistance deteriorated. The pavement performance meet the requirements of secondary road or less, when old material content is within 70%. The research results provide reference for the application of reclaiming asphalt mixture.

scholarly journals Feasibility Evaluation of Preparing Asphalt Mixture with Low-Grade Aggregate, Rubber Asphalt and Desulphurization Gypsum Residues

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1481 ◽  
Author(s):  
Xiaoliang Zhang ◽  
Ben Zhang ◽  
Huaxin Chen ◽  
Dongliang Kuang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Crack Resistance ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
Limestone Powder ◽  
Low Grade ◽  
High Temperature Stability ◽  
Temperature Crack

Road construction consumes great amounts of high-grade natural resources. Using low-grade natural rocks or some solid wastes as substitute materials is a hot topic. Considering this, the feasibility of using low-grade granite aggregate, solid waste-based filler (desulphurization gypsum residues, DGR) and binder (waste tire rubber modified asphalt, RMA) simultaneously in asphalt mixtures has been fully investigated in this research. The commonly used base asphalt and limestone powder (LP) filler were control groups. Material characteristics of raw materials mainly including micro-morphology, functional group, mineral phase, chemical composition and thermal stability were first evaluated in order to recognize them. Four asphalt mixtures (two asphalt binder and two filler) were then designed by standard Superpave method. Finally, a detailed investigation into the pavement performance of asphalt mixtures was carried out. The moisture damage resistance and low-temperature crack resistance were detected by the changing rules of stability, strength and fracture energy, and the high-temperature stability and fatigue performance were determined by wheel tracking test and indirect tensile (IDT) fatigue test, respectively. Results suggested that RMA and DGR both showed positive effects on the low-temperature crack resistance and fatigue property of the granite asphalt mixture. DGR also strengthened moisture stability. The contribution of RMA on high-temperature deformation resistance of the granite asphalt mixture was compelling. It can offset the insufficiency in high-temperature stability made by DGR. A conclusion can be made that asphalt mixture prepared with granite, DGR and RMA possesses satisfactory pavement performances.

Characteristics of Different Warm Mix Asphalt Compacted at Low Temperature

2011 ◽  
Vol 255-260 ◽  
pp. 3166-3170
Author(s):  
Li Ming Wang ◽  
Yi Qiu Tan ◽  
Zhen Wu Shi
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Crack Resistance ◽  
Temperature Stability ◽  
High Temperature Stability ◽  
Obvious Effect ◽  
Water Sensitivity ◽  
Active Additive ◽  
Surface Active ◽  
Temperature Crack

Additives on low temperature compaction and performances of compacted mixtures, the author devised low temperature environment compaction test, and then, comparison tests of volume parameters, high temperature stability, low temperature crack resistance and water sensitivity were conducted. Tests results showed that the wax additives and the surface-active additive can significantly contribute to mixtures low-temperature compactibility. The wax additive helps to improve high temperature stability obviously, and has no significant contribution to low temperature crack resistance and water sensitivity. The surface-active additive directly reduces water sensitivity, the wax additive indirectly plays the role of reducing water sensitivity by increasing the density of mixture, and the foam additive has no obvious effect on the water sensitivity.

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.

Research of Coarse Grading Asphalt Mixtures Based on Grey Relational Analysis

2014 ◽  
Vol 599 ◽  
pp. 234-238 ◽  
Author(s):  
Liang Liang Tu ◽  
Jun Zheng ◽  
Shao Peng Wu
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Grey Relational Analysis ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Water Stability ◽  
High Temperature Stability ◽  
Relational Analysis ◽  
Low Temperature Cracking ◽  
Grey Relational

Grey relational analysis (GRA) is an important data handling techniques. In this paper, combining the characteristics of asphalt mixture, the method of GRA is applied to the study of coarse grading. The high temperature stability, low temperature cracking resistance and water stability of asphalt mixture with different grading were evaluated in the laboratory. The results showed that OGFC-25 gradation apply to asphalt mixture that demand high temperature stability. Similarly, ATB-25 gradation benefit low temperature performance and SUP-25 benefit water stability.

scholarly journals Recycling Aged Asphalt Using Hard Asphalt Binder for Hot-Mixing Recycled Asphalt Mixture

2021 ◽  
Vol 11 (12) ◽  
pp. 5698
Author(s):  
Jian Zhou ◽  
Jing Li ◽  
Guoqiang Liu ◽  
Tao Yang ◽  
Yongli Zhao
Keyword(s):  
Low Temperature ◽  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
High Temperature Stability ◽  
Cracking Resistance ◽  
Recycled Asphalt ◽  
Reclaimed Asphalt ◽  
Aged Asphalt ◽  
Low Temperature Cracking

Increasing the content of reclaimed asphalt pavement material (RAP) in hot-mix recycled asphalt mixture (RHMA) with a satisfactory performance has been a hot topic in recent years. In this study, the performances of Trinidad lake asphalt (TLA), virgin asphalt binder, and aged asphalt binder were first compared, and then the modification mechanism of TLA on virgin asphalt and aged asphalt was explored. Furthermore, the RHMA was designed in accordance with the French norm NF P 98-140 containing 50% and 100% RAP, and their high-temperature stability, low-temperature cracking resistance, and fatigue performances were tested to be compared with the conventional dense gradation AC-20 asphalt mixture. The results show that the addition of TLA changes the component proportion of virgin asphalt binder, but no new functional groups are produced. The hard asphalt binder modified by TLA has a better rutting resistance, while the fatigue and cracking resistance is lower, compared to both aged and virgin asphalt. The high-modulus design concept of RHMA is a promising way to increase the RAP content in RHMA with acceptable performance. Generally, the RHMA with 50% RAP has similar properties to AC-20. And, when the RAP content reaches 100%, the high- and low-temperature performance and anti-fatigue performance of RHMA are better than AC-20 mixture. Thus, recycling aged asphalt using hard asphalt binder for hot-mixing recycled asphalt mixture to increase the RAP content is feasible.

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.

Application and Mechanism of a New Type of Polyethylene Modifying Additive in Asphalt Mixture

2011 ◽  
Vol 403-408 ◽  
pp. 656-659
Author(s):  
Yuan Yuan Sui ◽  
Zhong Da Chen
Keyword(s):  
High Temperature ◽  
Traditional Method ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Pavement Performance ◽  
Water Stability ◽  
High Temperature Stability ◽  
New Type ◽  
Temperature Crack ◽  
Modifying Additive

Asphalt mixture is often modified by adding modifier in order to improve the pavement performance such as high temperature stability, low temperature crack resistance and water stability. The author applies a new type of polyethylene modifying additive for asphalt mixture. The adding method of modifier is different from traditional method. Three modifiers were used in this study. It has been found that each modifier can improve the asphalt mixture performances. The author analyses the reason why modifying additive can improve asphalt mixture performances and give an advice to choose the type of modifying additive.

Study on Road Performance of Phase-Change Temperature-Adjusting Asphalt Mixture

2011 ◽  
Vol 287-290 ◽  
pp. 978-981 ◽  
Author(s):  
Biao Ma ◽  
Jun Li ◽  
Ren Wei Liu ◽  
Jin Ma
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Phase Change ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Water Stability ◽  
High Temperature Stability ◽  
Low Temperature Cracking ◽  
Long Time ◽  
Road Performance

Mixing the composite phase change material (CPCM) to asphalt mixture is a new way to solve the worldwide problem of the low-temperature cracking and high temperature rutting of the asphalt pavement. Asphalt mixture with CPCM can remain in the ideal working temperature range for a relatively long time. This paper analyzes the influence of the contents of CPCM on its road performance by laboratory testing. The study shows that mixing CPCM to asphalt mixture had little effect to the optimal asphalt content. For CPCM prepared by polymer shape-stabilized method, the high-temperature stability and the water stability of asphalt mixture increases firstly and then decreases the low-temperature anti-cracking stability decreases firstly and then increases with the increasing of CPCM. For CPCM prepared by carrier-adsorbed packaging process, the high-temperature stability decreases, low-temperature anti-cracking stability decreases firstly and then increases, the water stability increases firstly and then decreases with increasing of CPCM. The results indicate that CPCM has significant influences on its road performance. The optimal content of CPCM is around 0.3%.

Improving on Road Asphalt Mixture High Temperature Performance Analysis

2011 ◽  
Vol 374-377 ◽  
pp. 1347-1350
Author(s):  
Feng Chun Zhang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
High Temperature Stability ◽  
Road Asphalt ◽  
The Road ◽  
Temperature Performance ◽  
Important Significance ◽  
Temperature Crack

according to the road use functions, the article for asphalt mixture of high temperature stability, the low temperature crack performance is analyzed, the results for further study on the asphalt mixture has important significance.

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