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investigation of diffusion of rejuvenator in aged asphalt

investigation of diffusion of rejuvenator in aged asphalt

Investigation of diffusion of rejuvenator in aged asphalt ...

Jul 01, 2016  Abstract. Recycling asphalt pavement creates a cycle of reusing materials that optimize the use of natural resources. For optimal rejuvenation of the aged binder, the diffusion rate of the rejuvenator should be considered. However, the diffusion mechanism between the rejuvenator and aged asphalt is still far from understood.

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Investigation of diffusion of rejuvenator in aged asphalt

Investigation of diffusion of rejuvenator in aged asphalt Peiliang Conga,⇑, Hongjie Haoa, Yihan Zhanga, Weihua Luoa, Dianmei Yaob aEngineering Research Center of Transportation Materials of Ministry of Education School of Materials Science and Engineering, Chang’an University, Xian 710064, China b Shaanxi Railway Institute, Weinan 714000, China ...

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Investigation of diffusion of rejuvenator in aged asphalt ...

For optimal rejuvenation of the aged binder, the diffusion rate of the rejuvenator should be considered. However, the diffusion mechanism between the rejuvenator and aged asphalt is still far from understood. In this study, two experimental methods were conducted to research the diffusion of rejuvenator in aged asphalt.

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Study of rejuvenators dynamic diffusion behavior into aged ...

Nov 20, 2020  The rejuvenator we used was rejuvenator A because of its better diffusion into aged asphalt than rejuvenator B and C. Fig. 2 was used to carry on the experiments and report the results of Fig 9, Fig 10, Fig 11 with 6 cm height of aged asphalt covered with 6 cm height of rejuvenator A.

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Study the diffusion characteristics of rejuvenator oil in ...

Jul 20, 2020  Dr. Ma studied the diffusion by self-designed asphalt mortar transfer test and found it is an effective way to characterize the diffusion of rejuvenator into aged asphalt of recycled asphalt pavement materials. Ding employed molecular dynamics simulation to investigate the diffusion between virgin and aged asphalt binders. The simulation ...

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Investigation of rejuvenation and modification of aged ...

Jan 20, 2020  The content of rejuvenator that was blended in aged asphalt binder was 15% of the total weight of the mixture. In total, two types of virgin asphalt binder, two types of long-term aged asphalt binder and four types of rejuvenated asphalt binder were involved: (1) BA: virgin base asphalt binder without aging; (2)

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Investigation of diffusion of rejuvenator in aged asphalt ...

For optimal rejuvenation of the aged binder, the diffusion rate of the rejuvenator should be considered. However, the diffusion mechanism between the rejuvenator and aged asphalt is still far from understood. In this study, two experimental methods were conducted to research the diffusion of rejuvenator in aged asphalt.

get price

Study of rejuvenators dynamic diffusion behavior into aged ...

Nov 20, 2020  The rejuvenator we used was rejuvenator A because of its better diffusion into aged asphalt than rejuvenator B and C. Fig. 2 was used to carry on the experiments and report the results of Fig 9, Fig 10, Fig 11 with 6 cm height of aged asphalt covered with 6 cm height of rejuvenator A.

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Study of rejuvenators dynamic diffusion behavior into aged ...

Nov 20, 2020  As aged asphalt would partially lose its initial properties, rejuvenators have been developed and used in recycling process to enhance properties of such aged asphalt. In this research, three rejuvenators with different composition and three markers with typical and different molecular structures were used to study the dynamic diffusion ...

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Diffusion Mechanism of Rejuvenator and Its Effects on the ...

Using rejuvenator to improve the asphalt pavement service state has become an increasing concern in recent years. This study mainly focuses on the diffusion analysis between rejuvenator and aged asphalt, and further rheological influences by addition of rejuvenators. First, two rejuvenators, oil rejuvenator (OR) and penetrative rejuvenator (PR), were prepared in the laboratory.

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Research on High-RAP Asphalt Mixtures with Rejuvenators ...

research needs for more specific investigation of high- RAP mixtures with rejuvenators in order to achieve realistic implementation into future high-RAP paving projects in Nebraska. This study thus aimed to investigate the effects of type, dosage, and treating methods of rejuvenators when they are added in aged asphalt materials.

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REJUVENATOR FOR ASPHALT PAVEMENT PREVENTIVE

Goal: This project is aiming to design rejuvenator for asphalt pavement preventive maintenance, with efficient diffusion speed in aged asphalt mortar and remarkably effective heal depth when being ...

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Swelling and diffusion characteristics of polar and ...

Mar 20, 2008  The study showed that the diffusion mechanisms for LDPE and EVA were different and temperature‐dependent. In the case of LDPE, the observed diffusion was anomalous at both swelling temperatures (70 and 90°C). LDPE at 90°C showed sigmoidal solvent‐uptake behavior during the initial period of swelling and a sorption overshoot in a later period.

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[PDF] Evaluating and Modeling the Internal Diffusion ...

Microencapsulated rejuvenator has been attracted much attention for self-healing bitumen. The diffusion coefficient is one of the key parameters to estimate the feasibility of rejuvenator to age bitumen. The objective of this research was to evaluate diffusion behaviors of microencapsulated rejuvenator in aged bitumen by a FTIR-ATR method. Various microcapsule samples were mixed in

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Rejuvenator Diffusion in Binder Film for Hot-Mix Recycled ...

1. The rejuvenator fonns a very low-viscosity layer that surrounds the aggregate that is coated with aged asphalt cement (Time Step 0). 2. The rejuvenator begins to penetrate into the asphalt ce­ ment layer, thereby decreasing the amount of raw rejuvenator that coat5 the particle and :iOftening the. old asphalt -.flmP.nt (Time Step 1). 3.

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Evaluation of Rejuvenator on Softening, Toughness, and ...

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Evaluation of rheological behaviors and anti-aging ...

This research investigated the possibility of using polymers (CR and SBS) modi fied low-viscosity asphalt as rejuvenators to recycle the aged asphalt. The conventional properties,

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(PDF) Advanced Coatings R and D for Pipelines and Related ...

Academia is a platform for academics to share research papers.

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STP 1448-2004 Polymers Polymerization

STP 1448. Technology of Floor Maintenance and Current Trends. William J. Schalitz, editor. ASTM Stock Number: STP1448. ASTM International 100 Barr Harbor Drive PO Box C700 West Conshohocken, PA 19428-2959. INI'ER~'rlONAL Printed in the U.S.A. Ubrary of Congress Cataloging-in-Publication Data Technology of floor maintenance and current trends/William J. Schalitz, editor.

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Study of the Diffusion of Rejuvenators and Its Effect on ...

The rejuvenator-treated aged bitumen was prepared in two steps. Firstly, the aged bitumen was blended with 8% of R-1 or R-2, separately, using the propeller mixer (GS-1, Tianjin, China) for 30 min at 120 C with a constant speed of 200 rpm. Secondly, the rejuvenator-treated bitumen was then allowed

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Diffusion Mechanism of Rejuvenator and Its Effects on the ...

Using rejuvenator to improve the asphalt pavement service state has become an increasing concern in recent years. This study mainly focuses on the diffusion analysis between rejuvenator and aged asphalt, and further rheological influences by addition of rejuvenators. First, two rejuvenators, oil rejuvenator (OR) and penetrative rejuvenator (PR), were prepared in the laboratory.

get price

Research on High-RAP Asphalt Mixtures with Rejuvenators ...

research needs for more specific investigation of high- RAP mixtures with rejuvenators in order to achieve realistic implementation into future high-RAP paving projects in Nebraska. This study thus aimed to investigate the effects of type, dosage, and treating methods of rejuvenators when they are added in aged asphalt materials.

get price

Rejuvenator Diffusion in Binder Film for Hot-Mix Recycled ...

1. The rejuvenator fonns a very low-viscosity layer that surrounds the aggregate that is coated with aged asphalt cement (Time Step 0). 2. The rejuvenator begins to penetrate into the asphalt ce­ ment layer, thereby decreasing the amount of raw rejuvenator that coat5 the particle and :iOftening the. old asphalt -.flmP.nt (Time Step 1). 3.

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Evaluation of Rejuvenator on Softening, Toughness, and ...

Feb 06, 2018  Rejuvenator is widely used for aged SBS modified asphalt recycling. The objective of this research is to develop a procedure to evaluate rejuvenator on the soften ability, toughening ability, and diffusion ability for aged SBS modified asphalt. Four kinds of rejuvenator and two kinds of self-made SBS modified asphalt were selected.

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REJUVENATOR FOR ASPHALT PAVEMENT PREVENTIVE

Goal: This project is aiming to design rejuvenator for asphalt pavement preventive maintenance, with efficient diffusion speed in aged asphalt mortar and remarkably effective heal depth when being ...

get price

[PDF] Evaluating and Modeling the Internal Diffusion ...

Microencapsulated rejuvenator has been attracted much attention for self-healing bitumen. The diffusion coefficient is one of the key parameters to estimate the feasibility of rejuvenator to age bitumen. The objective of this research was to evaluate diffusion behaviors of microencapsulated rejuvenator in aged bitumen by a FTIR-ATR method. Various microcapsule samples were mixed in

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on the Physical and Rheological Performance of Aged

Dec 10, 2019  materials Article Di usion Mechanism of Rejuvenator and Its E ects on the Physical and Rheological Performance of Aged Asphalt Binder Fusong Wang 1,2, Lei Zhang 2, Boxiang Yan 1, Dezhi Kong 1, Yuanyuan Li 1 and Shaopeng Wu 1,* 1 State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China; [email protected] (F.W.);

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Compound rejuvenation of polymer modified asphalt binder ...

Dec 21, 2010  The objective of this research was to show a way to conduct rejuvenation of aged polymer modified asphalt binder (PMB) successfully. To fully evaluate and understand the rejuvenation of aged PMB, the Penetration grade tests including penetration, soften point, ductility and elastic recovery and Superpave™ PG grade tests including DSR, BBR and DDT were conducted.

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Evaluation of Rejuvenator on Softening, Toughness, and ...

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Evaluating and Modeling the Internal Diffusion Behaviors ...

Nov 17, 2016  Microencapsulated rejuvenator has been attracted much attention for self-healing bitumen. The diffusion coefficient is one of the key parameters to estimate the feasibility of rejuvenator to age bitumen. The objective of this research was to evaluate diffusion behaviors of microencapsulated rejuvenator in aged bitumen by a FTIR-ATR method.

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Molecular dynamics evaluation of activation mechanism of ...

The mutual-diffusion model of virgin and RAP asphalt was further assembled for the activation investigation of rejuvenator. Results denote a 4.43% increment of free volume and an 11.82 °C decrease of glass transition temperature in aged asphalt

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REJUVENATOR DIFFUSION IN BINDER FILM FOR HOT-MIX

REJUVENATOR DIFFUSION IN BINDER FILM FOR HOT-MIX RECYCLED ASPHALT PAVEMENT. In hot-mix recycling of bituminous mixes a rejuvenator is commonly used to restore the aged asphalt cement to a condition that resembles that of virgin asphalt cement.

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A review on the mechanisms involved in reclaimed asphalt ...

Jun 13, 2019  Reclaimed Asphalt Pavement (RAP) is a widely used recycled material in pavement construction. Whereas the integration of RAP into asphalt mixtures is a complex subject and need to understand every aspect that entailed in the mix design. The aim of this review paper is to provide comprehensive knowledge about the developments and challenges of the RAP in the asphalt

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