The use of high content of fine crumb rubber in asphalt mixes using dry process

Tahami, Seyed Amid; Mirhosseini, Ali Foroutan; Dessouky, Samer; Mork, Helge; Kavussi, Amir

doi:10.1016/j.conbuildmat.2019.06.180

Cited by 67 publications

(18 citation statements)

References 40 publications

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“…From the environmental stand point, this alternative has been seen to be attractive, yet, it has not been extensively adopted because its implications on road life cycle cost and performance have not been conclusively established (Ganiron, 2014). The two different techniques adopted in incorporating these wastes are: 1) the wet process and 2) the dry process (Rodríguez-Fern andez et al, 2020;Tahami et al, 2019). In the wet process, CR play the role of a binder modifier, whereas in the dry process, CR and/or granulated rubber is utilized in the replacement of the fines (Sun et al, 2020).…”

Section: Waste Rubber Tire Utilizationmentioning

confidence: 99%

Waste materials in highway applications: An overview on generation and utilization implications on sustainability

Bamigboye

Bassey

Olukanni

et al. 2021

Journal of Cleaner Production

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The rate at which the construction industry explores and consumes non-renewable natural aggregates and other industrial products such as bitumen, lime, and cement during construction and rehabilitation of road pavements has over time proven to be environmentally degrading and non-sustainable. This, alongside the issues of high solid waste generation and inadequate disposal, has led to series of studies by various researchers to find methods to integrate these solid wastes as alternative materials in road construction and maintenance. This paper provides a simple yet detailed review of recent relevant studies conducted to understand the alarming rate of generation and the effects of reusing these waste materials in both flexible and rigid pavements. The review further outlines the advantages and disadvantages of the selected waste materials and compare the results with that of conventional materials in accordance with relevant standards while highlighting the performance, and life cycle environmental and economic sustainability implications. The study shows that the adoption of these materials offers efficiency in waste disposal while reducing the demand for natural aggregates and consequently, significantly reducing life cycle impacts and costs. The challenges limiting the effective practical implementation of these waste recycling techniques in the construction industry were discussed and possible solutions were suggested to encourage and ensure its utilization in road construction.

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Section: Waste Rubber Tire Utilizationmentioning

confidence: 99%

Waste materials in highway applications: An overview on generation and utilization implications on sustainability

Bamigboye

Bassey

Olukanni

et al. 2021

Journal of Cleaner Production

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“…Por otro lado, Tahami y colaboradores evaluaron el uso de altos contenidos de CR como relleno en mezclas asfálticas para proporcionar un mayor desarrollo mediante el proceso seco considerando el efecto del proceso de curado, el relleno convencional de mezclas se reemplazó con 20%, 40% y 60% de CR por peso de relleno y se evaluaron las propiedades mecánicas de las mezclas modificadas, incluyendo susceptibilidad a la humedad, módulo de rigidez, comportamiento de formación de surcos y vida a fatiga. Los resultados indicaron que la aplicación simultánea de un proceso de curado y CR muy fino en la mezcla asfáltica, mejoró considerablemente la resistencia de las mezclas asfálticas frente a fallas (Tahami, Mirhosseini, Dessouky, Mork y Kavussi, 2019).…”

Section: Proceso Secounclassified

Uso del caucho granulado en mezclas asfálticas: Una revisión literaria

Pérez

Diaz

Herrera

2021

Infraestructura Vial

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Cada año se producen millones de toneladas de neumáticos desechados, lo cual presenta un grave problema ambiental. Debido a esto, en la actualidad se está usando el caucho granulado (CR) en el diseño de mezclas asfálticas, ya que proporcionan propiedades fundamentales en ello, como la durabilidad y la resistencia. En la presente recopilación literaria se analizaron diferentes artículos con el objetivo de descifrar los procesos y métodos que se emplean con el uso del CR, identificar los porcentajes óptimos y la mejora que éste proporciona en las mezclas asfálticas. Se halló que los porcentajes óptimos de CR en las mezclas asfálticas varían en un rango de 1%-20% en peso de la mezcla total. Asimismo, utilizar el CR aporta diferentes beneficios a la mezcla tales como: resistencia a la tracción indirecta, a la susceptibilidad, a la humedad, a la formación de surcos, a la permeabilidad y al envejecimiento; aumenta la vida útil de las mezclas a la fatiga y disminuye el ruido. Se revisaron 50 artículos indexados en la base de datos Scopus entre los años 2006 y 2020 sobrenel uso de CR en mezclas asfálticas, daño por humedad, resistencia a laformación de surcos, resistencia a la fatiga y resistencia a baja temperatura.

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“…As far as rubberised pavements are concerned, a limited number of studies can be found on the F–T of paving materials containing rubber, even less on highly rubberised materials, despite the environmental advantages connected with the use of recycled end-of-life tyres (ELTs) rubber [ 16 ]. A study conducted by Guo et al demonstrates the correlation between the use of crumb rubber in a bituminous mixture and the reduction of the anti-fatigue performances and life of the specimen after F–T cycles [ 17 ].…”

Section: Introduction and Objectivementioning

confidence: 99%

Influence of Freeze–Thaw Cycles on the Mechanical Properties of Highly Rubberised Asphalt Mixtures Made with Warm and Cold Asphalt Binders

Makoundou

Sangiorgi

2022

Materials

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The present study has been developed to investigate the effect of freeze and thaw (F–T) cycles on the characteristics of highly rubberised asphalt materials to be used as impact-absorbing pavement (IAP) in urban road infrastructures. The tested samples were produced in the laboratory following the dry process incorporation. Two main types of crumb rubber particles in the range of 0–4 mm were used. Moreover, two types of binders, one warm and one cold, were utilised to prove the feasibility of cold-produced admixtures. The temperature range of the F–T procedure was comprised between −18 ± 2 °C (dry freezing), and 4 ± 2 °C (in water), and the cycles were repeated, on the samples, 10 times. At 0, 1, 5, and 10 cycles, the samples were tested with non-destructive and destructive testing methods, including air voids content, ITSM, ITS, and Cantabro loss. The waters of the thawing period were collected, and the pH, electric conductivity, and particle loss were measured. A consequent change in mechanical behaviour has been recorded between warm and cold produced samples. However, the tests found that the F–T cycles had limited influence on the deterioration of the highly rubberised samples. The loss of particles in the thaw waters were identified as being potentially caused by the temperature stresses. The research suggested various ways to optimise the material to enhance the cold-produced layer mechanical performances, aiming at a fume and smell-free industrialised solution and reducing the potential leaching and particle losses.

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The use of high content of fine crumb rubber in asphalt mixes using dry process

Cited by 67 publications

References 40 publications

Waste materials in highway applications: An overview on generation and utilization implications on sustainability

Waste materials in highway applications: An overview on generation and utilization implications on sustainability

Uso del caucho granulado en mezclas asfálticas: Una revisión literaria

Influence of Freeze–Thaw Cycles on the Mechanical Properties of Highly Rubberised Asphalt Mixtures Made with Warm and Cold Asphalt Binders

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