Influence of Recycled Asphalt Pavement on Fatigue Performance of Asphalt Concrete Base Courses

Tabaković, Amir; Gibney, Amanda; McNally, Ciarán; Gilchrist, Michael D.

doi:10.1061/(asce)mt.1943-5533.0000093

Cited by 67 publications

(27 citation statements)

References 9 publications

(7 reference statements)

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“…Some researchers found that presence of RAP increases the stiffness of the mix (Aravind and Das, 2006;AL-Zubaidi and Sarsam, 2014) and decreases according to some studies (Huang et al, 2011). Similarly fatigue life increases according to (Tabakovic et al, 2010) and decreases according to (Mohammed et al, 2003) and vary according to the temperature (Puttagunta et al, 1997). Tensile strength increases (Sarsam and AL-Janabi 2014b) or similar to virgin mixes (Katman et al, 2012).…”

Section: Recycled Asphalt Pavementmentioning

confidence: 99%

Characterization of Recycled Asphalt Pavement (RAP) for Use in Flexible Pavement

El-Maaty¹,

Elmohr²

2015

American Journal of Engineering and Applied Sciences

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Due to economical reasons and the need for environmental conservatism, there has been an increasing shift towards the use of Recycled Asphalt Pavement (RAP) materials in the pavement construction industry. The majority of HMA mixtures in Egypt are produced only from virgin materials although there are about 4 million tons per year of reclaimed asphalt materials, due to continuous pavement milling or scraping processes, are not used. High durability potential usually implies that the mechanical behavior of the mixture will endure for a long service life. Now, flexible pavement, made of Hot-Mix Asphalt (HMA) with the addition of the reclaimed asphalt pavement granules in the central asphalt mixing plant, is increasingly used. The main objective of this paper is to investigate the use of a homogeneity reclaimed asphalt pavement in the pavement industry evaluating the effects of partial and total replacements of aggregates by RAP on the mechanical and durability performance of dense-graded HMA mixtures. The performance of RAP mixtures was evaluated through a series of laboratory tests including Marshall test, indirect tensile strength test, granule adhesion test and material test systems. A series of binder mixes containing varying percentages of RAP were designed and subjected to different moisture conditioning periods (1, 3 and 7 days) to investigate the moisture damage effect on RAP mixtures. The laboratory results indicated that when properly designed, the asphalt mixes with RAP especially at 50 to 100% replacement ratio provided better performance compared to those of new conventional HMA mixtures where they minimized the environmental impacts through the reduction of energy consumption, improved the mechanical properties, durability performance and also stripping resistance.

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Section: Recycled Asphalt Pavementmentioning

confidence: 99%

Characterization of Recycled Asphalt Pavement (RAP) for Use in Flexible Pavement

El-Maaty¹,

Elmohr²

2015

American Journal of Engineering and Applied Sciences

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“…The grading envelope Rationalisatie en Automatisering Grond-, Water-en Wegenbouw (RAW) 2005 was used to produce a PA asphalt mix typical of those used for road design i [18,19]. The limestone used originated from a quarry in Norway, the filler material was hydrated lime (Wigro 60K), and pen 70/100 of bitumen was used.…”

Section: Porous Asphalt Mastic MIX Design and Mixing Proceduresmentioning

confidence: 99%

An Evaluation of the Efficiency of Compartmented Alginate Fibres Encapsulating a Rejuvenator as an Asphalt Pavement Healing System

et al. 2017

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This paper explores the potential methods for evaluating a healing system for asphalt pavements. The healing system under investigation involves compartmented calcium-alginate fibres encapsulating an asphalt binder healing agent (rejuvenator). This system presents a novel method of incorporating rejuvenators into asphalt pavement mixtures. The compartmented fibres are used to distribute the rejuvenator throughout the pavement mixture, thereby overcoming some of the problems associated with alternate asphalt pavement healing methods, i.e., spherical capsules and hollow fibres. The asphalt healing efficiency methods to be evaluated in this paper include: (i) standard test methods for asphalt pavements, such as the Indirect Tensile Strength test and the 4 Point Bending Fatigue test; and (ii) alternative fracture tests such as the Semi Circular Bend test. The study employs fracture theory in order to evaluate the efficiency of the damage repair. The research findings demonstrate that including compartmented calcium-alginate fibres encapsulating a rejuvenator into an asphalt pavement mix does not significantly improve the healing properties of the asphalt pavement. Nevertheless, the findings indicate that, with further enhancement, compartmented calcium alginate fibres may present a promising new approach for the development of self-healing asphalt pavement systems. Additionally, the test results indicate that the 4 point bend fatigue test is the most suitable test for evaluating the performance of self healing asphalt pavements.

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“…The oxidation of aged asphalt binder during construction and service cause the binder oils to convert to resins and the resins to convert to asphaltenes, resulting in age-hardening and a higher viscosity binder than fresh binder [59,60]. Although this process is irreversible, the viscoelastic state of the asphalt mix can be recovered through the addition of either bitumen with a higher penetration value or a rejuvenating agent such as cationic emulsions [61][62][63].…”

Section: Binder Healing Agent (Rejuvenation)mentioning

confidence: 99%

“…To date there has been only a limited understanding of quantification of the success of selfhealing, mostly by measurement of mechanical performance, such as material strength [63]. This requires in-situ pavement evaluation, or a laboratory material evaluation of test samples obtained from site.…”

Section: Towards New Generations Of Self-healing Asphalt Pavementsmentioning

confidence: 99%

Self-Healing Technology for Asphalt Pavements

Tabaković

Schlangen

2015

Self-Healing Materials

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Influence of Recycled Asphalt Pavement on Fatigue Performance of Asphalt Concrete Base Courses

Cited by 67 publications

References 9 publications

Characterization of Recycled Asphalt Pavement (RAP) for Use in Flexible Pavement

Characterization of Recycled Asphalt Pavement (RAP) for Use in Flexible Pavement

An Evaluation of the Efficiency of Compartmented Alginate Fibres Encapsulating a Rejuvenator as an Asphalt Pavement Healing System

Self-Healing Technology for Asphalt Pavements

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