Fatigue analysis of hot recycled asphalt mixtures with RAP incorporation

Oliveira, Matheus Silva de; Farias, Márcio Muniz de; Silva, João Paulo Souza

doi:10.1016/j.cscm.2022.e01132

Cited by 7 publications

(2 citation statements)

References 19 publications

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“…In construction industry, new waste materials used are coconut shells (CS) and fibers. Coconut fiber (CF) when added to asphalt mix around 180 • C they will act as stabilizing additives (Oliveira et al, 2022). CS is also more resistance than other conventional aggregates when compared against impact, crushing and abrasion (Shelke et al, 2014).The water absorption of the CS is far better than traditional aggregate, that is, 24% in comparison to 0.5 (Gunasekaran et al, 2012).…”

Section: Utilization Of Coconut Shell Ash (Csa) With Some Additives I...mentioning

confidence: 99%

Emerging applications of green coconut: A promising lignocellulosic biomass

Sharma

Mittal

Yadav

et al. 2023

Environmental Quality Mgmt

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Waste accumulation is a grave concern and becoming a transboundary challenge for environment. During Covid-19 pandemic, diverse type of waste were collected due to different practices employed in order to fight back the transmission rate of the virus.Covid-19 was proved to be capricious catastrophe of this 20th century and even not completely eradicated from the world. The havoc created by this imperceptible quick witted, pleomorphic deadly virus can't be ignored. Though a number of vaccines have been developed by the scientists but there is a fear of getting this virus again in our life. Medical studies prove that immunity drinks will help to reduce its reoccurrences.Coconut water is widely used among all drinks available globally. Its massive consumption created an incalculable pile of green coconut shells around the different corners of the world. This practice generating enormous problem of space acquisition for the environment. Both the environment and public health will benefit from an evaluation of quantity of coconut waste that is being thrown and its potential to generate value added products. With this context, present article has been planned to study different aspects like, coconut waste generation, its biological properties and environmental hazards associated with its accumulation. Additionally, this review illustrates, green technologies for production of different value added products from coconut waste.

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Section: Utilization Of Coconut Shell Ash (Csa) With Some Additives I...mentioning

confidence: 99%

Emerging applications of green coconut: A promising lignocellulosic biomass

Sharma

Mittal

Yadav

et al. 2023

Environmental Quality Mgmt

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“…Consequently, the HMA-R100 mixture should be the mixture whose fatigue life was the most critical, however, the mixture with 45% RAP presented a lower fatigue life than the mixture with 100% RAP, due to the sharp drop in the curve between the number of pulses of stress applied to the sample, both by the resistant specific deformation, and by the stress difference. This suggests that this mixture would have a low fatigue life, presenting an early cracking of the coating layer [57].…”

Section: Evaluation Of the Mechanical Behavior Of Mixturesmentioning

confidence: 99%

Hot recycled asphalt mixtures with the incorporation of milled material: analysis of the mechanical performance and economic presumption in the applicability of the technique

Oliveira

Farias

2022

Matéria (Rio J.)

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The paving technique ensures the guarantee of functional traffic conditions, optimizing the performance of the structure in providing travel with comfort and safety. Considering that due to time and the action of traffic, when the pavement reaches the end of its useful life, interventions are necessary, aiming at a gain in serviceability, comprised of the thinning of the coating, generating waste, for later execution of a new layer, which can be recycled. This recurrent technique for road pavements has been widely applied to the use of RAP (reclaimed asphalt pavement), to compose new layers of pavement, given its mechanical performance, especially in terms of permanent deformation, and given the sustainable and economical premise. The paper sought to evaluate, using a laboratory study, the mechanical performance of hot recycled asphalt mixtures with the incorporation of 25%, 45%, and 100% of RAP, and to perform an economic analysis of the applicability of the technique. The dosage methodology occurred according to the Superpave specification whose results listed a significant gain in stiffness, and good mechanical performance with proportionality in the values obtained according to the incorporation rate of RAP. As for the economic analysis, it was observed that the costs of applicability of the technique are related to the percentage of incorporation in mass and the logistical costs of processing, which may be lower than or higher than that of a conventional mixture. Above all, the results were satisfactory to prove the feasibility of the technique in paving works.

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