Effect of Using of Reclaimed Asphalt and/or Lower Temperature Asphalt on the Availability of the Road Network

Abstract

There is a need for a method for assessing the results from changes in the potential durability of road materials due to the inclusion of reclaimed and secondary component materials in the manufacture of new road materials. Such changes will have an effect on the cost of the construction maintenance, both financially to the client and environmentally to society in general, and any savings may be transitory. A site trial has been laid of mixtures with and without reclaimed asphalt and work started to assess their durability from early-life properties. The trials are being monitored for their initial performance whilstlaboratory trials are concentrating on the combined effect of ageing and moisture damage on the performance of asphalt mixtures on the trial. All three strands are being used to develop life-cycle analysis models to customise them for the effect of using alternative component materials on the availability of the network and their overall financial and environmental cost, both initial and whole-life. The costs will be identified as being direct (of the construction and maintenance) and indirect (on society in general, such as congestion).Keywords:Recycling, Secondary aggregates, Durability, Whole-life costs. RésuméIl existe un besoin de trouver une méthode pour évaluer les résultats de la variation de la durée de vie potentielle de matériaux routiers en raison de l'inclusion des matériaux de construction recyclés et secondaires dans la fabrication de nouveaux matériaux routiers. Ces changements auront un effet sur le coût de l'entretien de la construction, à la fois financièrement concernant la clientèle et de l'environnement pour la société et les économies réalisées peuvent être éphémères. Un essai du site a été fait avec des mélanges avec et sans enrobés et des travaux ont été entrepris afin d'évaluer leur durabilité et les propriétés en début de la vie. Les essais sont surveillés pour leur performance alors que les essais en laboratoire se concentrent sur l'effet combiné des dommages causés par le vieillissement et de l'humidité sur la performance des enrobés bitumineux sur le procès. Les trois brins sont utilisés pour développer des modèles d'analyse du cycle de vie pour les adapter à ll'utilisation des matériaux des composants alternatifs sur la disponibilité du réseau et leur coût global financier et environnemental, que se soit pour l'état initial que pour la vie entière. Les coûts seront identifiés comme étant directe (de la construction et de l'entretien) et indirects (sur la société en général, tels que la congestion).

Influence of Additives on Permanent Deformation and Resilient Modulus of Recycled Asphalt Concrete

“…To emphasizing improvement, on accentuating development in the current era, reusing for asphalt is one of the effective , also proven restoration procedures, (Shunyashree et al, 2013). Such changes will affect the cost of the structure maintenance, both economically to the client and naturally to society in wide-ranging and any investment might be transitory, (Nichollsa et al, 2014). In latest years, attitudes to the environment have changed significantly, and preservation of assets has become an extremely important issue, hence and because of the expanded demand, limited aggregate and binder supply.…”

Comparison of Chemical and Microstructural Properties of Virgin and Reclaimed Asphalt Pavement Binders and Their Saturate, Aromatic, Resin, and Asphaltene Fractions

“…This chemical transformation is usually reflected in the population of chemical groups at the molecular level. 6 Fourier transform infrared spectroscopy (FTIR) can be used to obtain infrared spectra corresponding to vibrations of various chemical groups, allowing them to be characterized qualitatively. 7 The oxidation (aging) of bitumen can be observed by monitoring changes in absorbances of carbonyl (CO around 1700 cm −1 ) and sulfoxide SO (around 1030 cm −1 ) groups.…”

“…The binder in RAP is chemically transformed, notably as a result of oxidation, as it ages during service in the field. This chemical transformation is usually reflected in the population of chemical groups at the molecular level . Fourier transform infrared spectroscopy (FTIR) can be used to obtain infrared spectra corresponding to vibrations of various chemical groups, allowing them to be characterized qualitatively .…”