Properties of reclaimed asphalt pavement mixture with organic rejuvenator

Wróbel, Michał; Woszuk, Agnieszka; Ratajczak, Maria; Franus, Wojciech

doi:10.1016/j.conbuildmat.2020.121514

Cited by 36 publications

(16 citation statements)

References 52 publications

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“…e softening point of rapeseed asphalt binders decreased with the increase of admixture [44]. e softening points of crayfish shell powder and oyster shell powder asphalt binders all increased with the increasing amount of admixture.…”

Section: Conventional Performancementioning

confidence: 92%

“…that when they associate with asphalt, they have a softening effect on asphalt [42]. When plantbased modification was used, the infrared spectra of asphalt binders from lignin fibers [31], corn stalks [43], rice straw stalks, and rapeseed [44] were essentially the same as the matrix asphalt with no chemical reaction. When biological shell was used for modification, crayfish shell powder [34], fish scale powder [45], and oyster shell powder had more similar properties and just physically mixed.…”

Section: Chemical Characterizationmentioning

confidence: 99%

“…Bio-oil modifiers extracted from animal manure and waste wood could diffuse more rapidly in asphalt materials, and the ductility of asphalt binders increases with the increasing amount of admixture [41]. e 5°C ductility of rapeseed asphalt binders in plant-based-modified materials decreases with the increase of admixture, with a 30% decrease in ductility compared to the matrix asphalt at 4% admixture [44]. e ductility of cornstalk asphalt binder increases with the increase of admixture [49].…”

Section: Conventional Performancementioning

confidence: 99%

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Effect of Biowaste on the High- and Low-Temperature Rheological Properties of Asphalt Binders

Wang

Guo

et al. 2021

Advances in Civil Engineering

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The growth of aquaculture has increased the production of oysters. However, the increased oyster shell volume has created serious environmental and recycling problems for the society. In order to study the sustainable utilization of waste oyster shells, asphalt binder of waste oyster shell powder was prepared by using modified asphalt material with waste oyster shells. The microstructure of oyster shell powder was analyzed by scanning electron microscopy experiments. The chemical composition of the asphalt binder was observed by Fourier transform infrared spectroscopy tests. The physical properties of the asphalt binder, including softness, high-temperature performance, and plastic deformation capacity, were initially evaluated through three indicators’ tests on asphalt. A preliminary performance evaluation of the asphalt binder was performed. The high-temperature stability of asphalt binders was evaluated using dynamic shear rheometry. The rutting resistance of the material was evaluated by temperature sweep tests, and the shear deformation resistance of the material was evaluated by frequency sweep tests. Multiple stress creep recovery tests determine the material’s ability to resist permanent deformation. The low-temperature rheological properties were evaluated by bending beam rheology tests. The study found that the waste oyster shell powder is a biomass with a porous irregular petal shape. No new characteristic absorption peaks are formed by mixing with asphalt. And, it can improve the viscosity, thermal stability, and temperature-sensitive properties of the material. It significantly improved the high-temperature rheological performance, rutting coefficient, and recovery elasticity of the material. However, it has little effect on low-temperature rheological performance. This study provides a solid foundation for the effective use of biowaste in engineering materials.

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Section: Conventional Performancementioning

confidence: 92%

Section: Chemical Characterizationmentioning

confidence: 99%

Section: Conventional Performancementioning

confidence: 99%

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Effect of Biowaste on the High- and Low-Temperature Rheological Properties of Asphalt Binders

Wang

Guo

et al. 2021

Advances in Civil Engineering

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“…Meanwhile, Baqersad and Ali (2021) [ 29 ] have investigated the use of a nanomodified asphalt binder in the recycling of RAP material to increase the incorporation of RAP percentages in recycled asphalt. In general, there are many different studies on the use of rejuvenators for the homogenization of asphalt mixtures with RAP [ 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of a Rejuvenator on Homogenization of an Asphalt Mixture with Increased Content of Reclaimed Asphalt Pavement in Lowered Technological Temperatures

Slabonski¹,

Stankiewicz

Bęben

2021

Materials

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The most technologically advanced form of road construction uses a high content of reclaimed asphalt pavement (RAP) as a component of its asphalt mixture (AM). However, there is a real problem with the effective interaction of RAP and MA. The research herein described presents an effective use of RAP originating from the recycling process of old pavements thanks to the application of an original rejuvenator. Two types of AM were designed concerning the base course of pavement as well as the wearing course and the binder course for various traffic categories. The achieved results show that the rejuvenator improved the homogenization of RAP with the asphalt binder and aggregate in each mixture type. On the basis of the research, the possibility of using paving AM with an increased content of RAP in lowered technological temperatures received a favorable assessment. Mixtures of asphalt concrete containing 40% RAP meet both Polish and German requirements for mixtures intended for heavy traffic pavements. Thanks to use of the rejuvenator, it is possible to compact AM layers containing RAP in a final compaction temperature lowered by about 20 °C. The achieved AM lab test results were confirmed on trial road sections. The rejuvenator used in tested AMs improved the homogenization of RAP with both binder and virgin aggregate. Moreover, the study proved that it is possible to use 20%, 40%, and even 100% RAP contents in the mixtures thanks to the use of the rejuvenator based on plant resin and the creation of conditions enabling the effective homogenization of AM components.

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“…This solution was shown to be effective in previous publications and engineering projects. However, when RAP content reaches a high percentage (for example, over 50% by the weight of RHMA), the extra softening additives could reduce the rutting resistance of RHMA [15,16]. Thus, the use of a high percentage of RAP in RHMA has not been properly addressed in current recycling technology.…”

Section: Introductionmentioning

confidence: 99%

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

Zhou

Liu

et al. 2021

Applied Sciences

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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.

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Properties of reclaimed asphalt pavement mixture with organic rejuvenator

Cited by 36 publications

References 52 publications

Effect of Biowaste on the High- and Low-Temperature Rheological Properties of Asphalt Binders

Effect of Biowaste on the High- and Low-Temperature Rheological Properties of Asphalt Binders

Influence of a Rejuvenator on Homogenization of an Asphalt Mixture with Increased Content of Reclaimed Asphalt Pavement in Lowered Technological Temperatures

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

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