Field Evaluation of Warm-Mix Asphalt Technologies

Sargand, Shad M.; Nazzal, Munir D.; Al-Rawashdeh, Abdalla S.; Powers, David B.

doi:10.1061/(asce)mt.1943-5533.0000434

Cited by 45 publications

(24 citation statements)

References 7 publications

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“…In a different study performed on a rural road, rehabilitated and divided into four segments (one with an HMA mixture and the other three with WMA), with an average circulation traffic of 2150 vehicles per day, Kvasnak et al (2010) report that the properties of WMA mixtures depend on the type of additive used or on the manufacturing method. A similar conclusion is reported by Arega et al (2011), Nazzal et al (2011), and Sargand et al (2012. In addition, Nazzal et al (2011) andSargand et al (2012) report that although WMA mixtures were compacted at a lower temperature, they reached a higher density in the field than HMA mixtures and a lower level of aging.…”

Section: Resistance and Durabilitysupporting

confidence: 71%

“…A similar conclusion is reported by Arega et al (2011), Nazzal et al (2011), and Sargand et al (2012. In addition, Nazzal et al (2011) andSargand et al (2012) report that although WMA mixtures were compacted at a lower temperature, they reached a higher density in the field than HMA mixtures and a lower level of aging. .…”

Section: Resistance and Durabilitysupporting

confidence: 71%

“…According to the producers of Aspha-Min ® , it can produce a reduction of the mixing temperature of more than 10 °C and produce energy consumption savings of 30 % in the asphalt plant. Nazzal et al (2011) andSargand et al (2012) report that the emissions of organic compounds, carbon monoxide, nitrogen oxides, and sulfur dioxide are reduced by at least 50 %, 60 %, 20 %, and 83 %, respectively, when WMA mixtures are manufactured with Aspha-Min ® and Sasobit ® in comparison to an HMA mixture. Advera ® is a synthetic zeolite (thin powder of hydrated sodium aluminosilicate) that is hydrothermally crystallized.…”

Section: Foamed Asphaltsmentioning

confidence: 99%

See 2 more Smart Citations

A Review of Warm Mix Asphalt Technology: Technical, Eco-nomical and Enviromental Aspects

Quintana¹,

Hernández-Noguera²,

Reyes³

2015

ing.inv.

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In general terms, warm mix asphalt (WMA) technology has great potential for successful use in road works construction projects. However, concerns remain regarding the durability and behavior of WMA mixtures in the long term, which need to be addressed. This review focuses on the technical, economic and environmental advantages and disadvantages. The review concludes that the main advantageof this technology, at the moment, concerns the environment. At the end of this work, the authors include certain recommendations for future works in order to continue strengthening the development of WMA technology.Keywords: Warm mix asphalt, WMA, manufacturing, design, additives. RESUMENEn términos generales, la tecnología de mezcla asfáltica tibias (WMA por sus siglas en inglés) presenta un gran potencial para ser usada con éxito en proyectos de obras de construcción de obras viales. Sin embargo, aún existe preocupación en temas concernientes a la durabilidad y al comportamiento a largo de plazo de esta tecnología. Con base en una revisión bibliográfica, el artículo presenta los aspectos más importantes concernientes a la tecnología WMA. Se reportan las ventajas y desventajas técnicas, económicas y ambientales de utilizar esta tecnología reciente. Al final del documento los autores exponen algunas recomendaciones como apoyo para continuar fortaleciendo el desarrollo de la tecnología WMA.

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Section: Resistance and Durabilitysupporting

confidence: 71%

Section: Resistance and Durabilitysupporting

confidence: 71%

Section: Foamed Asphaltsmentioning

confidence: 99%

See 1 more Smart Citation

A Review of Warm Mix Asphalt Technology: Technical, Eco-nomical and Enviromental Aspects

Quintana¹,

Hernández-Noguera²,

Reyes³

2015

ing.inv.

View full text Add to dashboard Cite

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“…No Brasil, os estudos e aplicações destes tipos de tecnologias "verdes" iniciaram-se junto aos institutos de pesquisas, onde são desenvolvidas, em sua maioria, com fins acadêmicos. A adição de aditivos orgânicos / químico, emulsões e ligantes sintéticos podem diminuir as temperaturas de operação de usinagem e campo em cerca de 37 °C [6,7,8].Portanto, logo há a importância de intensificar as pesquisas na área de misturas mornas, para se identificar quais seriam as técnicas ou produtos mais convenientes para o País .…”

Section: Introductionunclassified

Asphalt binders modified with Moringa Oleifera Lam oil

Lucena¹,

Silveira²,

Costa³

2016

Matéria (Rio J.)

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RESUMOA preocupação com o desenvolvimento sustentável tem levado ao estudo de tecnologias verdes que minimizem os impactos ao meio ambiente sem comprometer a qualidade do pavimento. Neste cenário, a indústria da pavimentação tem começado a pesquisar e aplicar as misturas asfálticas mornas. Estas são produzidas em temperaturas mais baixas que as convencionais e reduzem o gasto com combustível. As misturas mornas podem ser resultados da adição de um óleo, geralmente orgânico, ao ligante convencional, diminuindo a viscosidade deste. As sementes de Moringa Oleífera Lam possuem um teor de óleo compreendido entre 38 e 40%, e propriedades antioxidantes e lubrificantes. O objetivo deste trabalho consistiu em avaliar as mudanças das propriedades de consistência e a variação das temperaturas de usinagem e compactação com a adição do óleo da Moringa Oleífera Lam como aditivo verde. O óleo da Moringa Oleífera Lam foi extraído por prensagem a partir da torta das sementes. Em seguida, foram realizadas 6 misturas utilizando CAP 50/70 e o óleo da Moringa Oleífera Lam em diferentes proporções (0%, 0,5%, 1%, 1,5%, 2%, 2,5% e 3%). Os ligantes foram analisados utilizando-se ensaios de viscosidade Brookfield, penetração, ponto de amolecimento e o envelhecimento por meio do ensaio em estufa de filme fino rotativo (RTFOT). Os resultados mostraram que a adição do óleo da Moringa Oleífera Lam deve ser efetuada para teores no intervalo compreendido entre 0,5% a 1%, pois nestes teores ocorre uma diminuição significativa das temperaturas de usinagem e compactação (≈ 5 o C ) sem comprometer o desempenho do ligante asfáltico. Palavras-chave: óleo da Moringa Oleífera Lam, misturas monas, ligantes ABSTRACTThe concern with sustainable development has driven efforts to the study of green technologies to minimize the environmental impacts without compromising pavement quality. In this scenery, the paving industry has started to research and apply warm asphalt mixtures, which are produced in lower temperatures than conventional mixtures and reduce the expenses in fuels. The warm mixtures can result from the addition of an oil, usually organic, to the conventional binder, decreasing the binder's viscosity. Moringa oleifera Lam Seeds possess an oil content varying between 38 and 40% and have antioxidant and lubricant properties. This study aimed to evaluate the changes in properties related to consistency and the effective variation of mixing and compaction temperatures due to asphalt modification with the oil of Moringa oleifera Lam as green additive. The Moringa oleifera Lam oil was extracted by pressing of seeds. Then, 6 mixtures were made using 50/70 PAC and Moringa Oleifera Lam oil in different proportions (0.5%, 1%, 1.5%, 2%, 2.5% and 3%), as well as a reference sample (pure PAC). The binders were analysed using Brookfield Viscosity, Penetration, Softening Point and Rolling Thin Film Oven (RTFOT) Tests. The results showed that the addition of Moringa oleifera Lam oil must be made for contents in the range of 0.5% to 1%, once that to these cont...

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“…According to the manufacturers of AsphaMin®, this additive reduces mix temperatures by more than 10° C and saves 30% on asphalt plant energy consumption. Furthermore, [33,34] found that in comparison to HMAs, emissions of organic compounds, carbon monoxides, nitrogen oxides and sulfur dioxides were lowered by at least 50%, 60%, 20% and 83%, respectively when WMA foaming is carried out with Aspha-Min®.…”

Section: Introductionmentioning

confidence: 99%