Mechanical Characterisation of Hot Mix Recycled Materials

Pereirâ, Paulo A. A.; Oliveira, Joel; Picado-Santos, Luís

doi:10.1080/10298430412331333668

Cited by 47 publications

(28 citation statements)

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“…This was unexpected given that the mixtures containing RAP had a higher total content of bitumen in the mix (both fresh and aged). These results however are in agreement with those published by Pereira et al (2004) who using a repeated simple shear test, found that resistance to permanent deformation increased with RAP content.…”

Section: Permanent Deflection Testsupporting

confidence: 77%

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

Tabaković

Gibney

McNally

et al. 2010

J. Mater. Civ. Eng.

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This paper presents the physical properties of Recycled Asphalt Pavement (RAP) and its influence on the mechanical performance of a binder course asphalt pavement mix. A series of binder course mixes were designed containing varying percentages of RAP. A mix made from only virgin material was selected as the control mix for the investigation. The effect of introducing RAP into the binder course mix was evaluated through a series of laboratory tests including the Marshall test, the indirect tensile stiffness modulus Test, the indirect tensile fatigue test and the water sensitivity test. A Circular Wheel Track (CWT) was developed in order to study the dynamic effects of a rolling wheel travelling over an asphalt pavement. The CWT was commissioned within a temperature controlled room along with a customised data acquisition system. The system involves the testing of rectangular slabs and allows for the investigation of dynamic tensile strain. The laboratory tests have shown that the introduction of RAP to the binder course mix resulted in an improvement in all mechanical properties. In particular, it was found that the mix containing up to 30% RAP, displayed improved fatigue resistance relative to the control mix manufactured from virgin materials.

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Section: Permanent Deflection Testsupporting

confidence: 77%

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

Tabaković

Gibney

McNally

et al. 2010

J. Mater. Civ. Eng.

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“…Conversely, Kandhal et al (1995) reported decrease of the tensile strength of recycled mixtures as compared to the reference one. Increases in dynamic modulus with increasing RAP contents were also reported by Pereira et al (2004), Silva et al (2012) and Tavakol et al (2017), as compared to HMA mixtures produced with virgin materials. Increase in dynamic modulus and flexural stiffness was also observed by Ghabchi et al (2016) with mixtures produced with RAP or a blend of RAP and RAS.…”

Section: Long-term Performance Of Asphalt Mixtures Containing Rapsupporting

confidence: 59%

“…Ghabchi et al (2016) observed that the low-temperature cracking potential increased for mixtures produced with RAP and a blend of RAP and recycled asphalt shingles (RAS). Tam et al (1992), McDaniel et al (2000), Mohammad et al, (2003), Mannan et al (2015), and Zhang et al (2016) pointed out reduction in the fatigue resistance and the opposite was pointed out by Huang et al (2004), Pereira et al (2004) and Silva et al (2012). Ghabchi et al (2016) Silva et al (2012), and Li et al (2014).…”

Section: Long-term Performance Of Asphalt Mixtures Containing Rapmentioning

confidence: 91%

“…The studies conducted by Sargious and Mushule (1991), Mohammad et al, (2003), Huang et al (2004), Pereira et al (2004), Mogawer et al (2011), Silva et al (2012), West Literature Review_______________________________________________________________________________33 et al (2013, Islam et al (2014) and Li et al (2014), and Zhang et al (2016) pointed out the increase of the rutting resistance after the addition of RAP to the new asphalt mixtures. According to Mogawer et al (2011), the incorporation of RAP in small quantities (about 5% to 10%) provides HMA mixtures with rutting performance similar to HMA mixtures prepared with virgin materials, but the improved rutting resistance becomes more noticeable when higher RAP proportions are used.…”

Section: Long-term Performance Of Asphalt Mixtures Containing Rapmentioning

confidence: 99%

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Evaluation of the fatigue performance of fine aggregate matrices prepared with reclaimed asphalt pavements and shale oil residue

Klug¹

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A incorporação de misturas asfálticas fresadas na produção de misturas asfálticas novas é uma alternativa útil à utilização de materiais novos, gerando benefícios econômicos e ambientais. A reciclagem de pavimentos criou um ciclo sustentável de reuso de recursos naturais não-renováveis, reduzindo a demanda por agregado mineral e asfalto novos. No entanto, a adição do material fresado, especialmente em proporções altas, provoca aumento na rigidez da mistura asfáltica, causado pela alta rigidez do asfalto envelhecido. Uma elevada rigidez pode tornar a mistura asfáltica mais propensa ao trincamento por fadiga. Para contornar tal desvantagem e permitir a adição de maiores quantidades de material fresado, asfaltos de baixa consistência e agentes de rejuvenescimento podem ser adicionados à mistura. Os asfaltos de baixa consistência atuam para reduzir a rigidez do asfalto envelhecido e os agentes de rejuvenescimento atuam para restaurar as propriedades originais do asfalto envelhecido, aproximando-as das exigidas pelas especificações para asfaltos virgens. O resíduo de óleo de xisto é um dos agentes rejuvenescedores mais utilizados no Brasil e, segundo a literatura, resulta em desempenho comparável ao desempenho de outros agentes rejuvenescedores comerciais, com a vantagem de apresentar maior poder de rejuvenescimento devido à sua maior aromaticidade. O processo de trincamento por fadiga principia nas microtrincas presentes na matriz de agregado fino (MAF) da mistura asfáltica. Uma abordagem para avaliar o comportamento à fadiga das misturas asfálticas é baseada na teoria do dano contínuo em meio viscoelástico, pela qual o processo de trincamento do material é representado por variáveis de estado interno associadas à redução na integridade do material. Neste estudo, ensaios em amostras de MAF foram feitos para caracterizar o desempenho à fadiga, e os dados foram analisados utilizando a teoria do dano contínuo em meio viscoelástico. O objetivo da pesquisa foi avaliar o desempenho à fadiga de MAFs produzidas com três proporções de material fresado (20, 40 e 100%), dois asfaltos com diferentes graus de desempenho (PG 64-22 e PG 58-16), e três combinações (100/0, 50/50, 0/100) de asfalto PG 64-22 e agente de rejuvenescimento (resíduo de óleo de xisto). Dentre as MAFs preparadas com material fresado, duas apresentaram desempenho à fadiga superior à mistura de controle (composta apenas com materiais novos): a MAF composta com 40% de material fresado e PG 64-22 e a MAF composta com 20% de material fresado e PG 58-16. O resíduo de óleo de xisto não atuou como rejuvenescedor do asfalto envelhecido, para a maioria dos casos avaliados, provavelmente devido à baixa taxa de difusão do material no asfalto envelhecido. Palavras-chave:Matrizes de agregado fino, misturas asfálticas fresadas, dano contínuo em meio viscoelástico (VECD), resíduo de óleo de xisto. The incorporation of recycled asphalt pavements (RAP) in the production of new asphalt mixtures is a useful alternative to the use of virgin materials, leading to economic and en...

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“…Recognizing this fact, the reported studies and research on the utilization of recycled aggregate such as reclaimed asphalt pavement (RAP), recycled construction aggregate (RCA), recycled glass, etc. have increased all over the world over the past two decades [18][19][20][21][22][23][24][25][26][27][28][29]. Among the recycled aggregates that can be utilized in asphalt mixture, RCA obtained from construction and demolition waste constitute a major part of generated solid waste as a result of renovation and construction projects.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Mechanical Properties of Recycled Material for Utilization in Asphalt Mixtures

et al. 2017

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Abstract:With an expanding world, the demand for extensive road networks is increasing. As natural resources become scarce, the necessity of finding alternative resources has led to the idea of applying recycled material to pavement construction including asphalt pavements. Amongst all asphalt components, aggregate constitutes the largest part of asphalt mixtures. Therefore, the utilization of recycled material for aggregate will represent an important opportunity to save virgin material and divert material away from landfills. Because of the large amount of construction waste generation around the world, using recycled construction aggregate (RCA) in asphalt mixtures appears to be an effective utilization of RCA. However, as aggregate plays an important role in the final performance of the asphalt mixture, an understanding of their properties is essential in designing an asphalt mixture. Therefore, in this research, the properties of RCA have been evaluated through laboratory investigations. Based on the test results, it is required that combination of RCA with some other targeted waste materials be considered in asphalt mixture. This paper presents the results of an experimental study to evaluate the RCA properties as an alternative for virgin aggregate in asphalt mixture under different percentages and combination with other aggregates, such as reclaimed asphalt pavement (RAP) and basalt.

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Mechanical Characterisation of Hot Mix Recycled Materials

Cited by 47 publications

References 0 publications

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

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

Evaluation of the fatigue performance of fine aggregate matrices prepared with reclaimed asphalt pavements and shale oil residue

Evaluation of Mechanical Properties of Recycled Material for Utilization in Asphalt Mixtures

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