Environmental and mechanical performance of crumb rubber modified warm mix asphalt using Evotherm

Yang, Xu; You, Zhanping; Hasan, Mohd Rosli Mohd; Diab, Aboelkasim; Shao, Huijun; Chen, Siyu; Ge, Dongdong

doi:10.1016/j.jclepro.2017.04.168

Cited by 113 publications

(41 citation statements)

References 38 publications

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“…Based on the rough relationship between mixing temperature and fuel consumption in Fig. 5, Yang et al (2017) found that WarmRAC had a fuel savings of around 14% comparing to control rubberized HMA. In addition, a reduction in the amount of moisture that is removed from the incoming aggregates also reduces fuel consumption.…”

Section: Fuel Savings Of Wma Technologymentioning

confidence: 99%

“…PAH concentrations is related to initial mix production temperature, with warm mixes produced at lower temperatures show lower PAH concentrations. Yang et al (2017) conducted the stack emission test which monitored six types of hazard emissions (formaldehyde, naphthalene, total xylene, ethylbenzene, toluene, and benzene) from control HMA, rubberized HMA and rubberized WMA. Results showed that rubberized HMA exhibited a visibly higher emission than control HMA due to the addition of CRM.…”

Section: Case Study Of Warmracmentioning

confidence: 99%

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Review of warm mix rubberized asphalt concrete: Towards a sustainable paving technology

Wang

Liu

Apostolidis

2018

Journal of Cleaner Production

160

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In recent years, transportation agencies and the general public alike are demanding increased considerations of sustainability in transport infrastructure. Warm mix asphalt (WMA) is developed for reducing energy consumptions and emissions in asphalt paving industry. In addition, the use of rubberized asphalt concrete (RAC) has proven to be economically and environmentally sound and effective in improving the performance of pavements around the world. The combination of WMA and RAC, namely WarmRAC, is a novel and promising paving technology that can realize pavement sustainability from principles to practices. This study summarizes the best practices and recent research findings on warm mix rubberized asphalt concrete, including mix design, construction techniques, performance evaluation, feasibility of recycling, and environmental and economic benefits. Although most research findings to date about WarmRAC are positive, it still has a long way for WarmRAC to be fully adopted worldwide. Therefore, life cycle assessment including environmental and economic impacts, and long-term performance of WarmRAC need further research with involvement of transportation agencies, industry and academia.

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Section: Fuel Savings Of Wma Technologymentioning

confidence: 99%

Section: Case Study Of Warmracmentioning

confidence: 99%

Review of warm mix rubberized asphalt concrete: Towards a sustainable paving technology

Wang

Liu

Apostolidis

2018

Journal of Cleaner Production

160

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“…Ma y colaboradores realizaron un estudio para evaluar los efectos de los aditivos de asfalto (denominados Sas y Evm) en la mezcla tibia, sobre la temperatura de compactación y las propiedades del asfalto y mezcla de asfalto modificado con CR, mediante el proceso húmedo, en el que se añadió un porcentaje de 25% de CR en peso del asfalto base, se tuvo como El estudio de Yang y otros encontró que el ahorro de asfalto con CR fue de 5,8% en comparación con el asfalto sin modificar, el ahorro de combustible fue de alrededor del 13% y también se observó una reducción visible de las emisiones peligrosas; asimismo los resultados de rendimiento mecánico mostraron que el asfalto con CR y Evotherm tenía una mejor resistencia a la formación de surcos, un rendimiento a baja temperatura y un mejor rendimiento a la fatiga y resistencia al daño por humedad en comparación con el asfalto sin CR (Yang. et al, 2017).…”

Section: Proceso Caliente O Húmedounclassified

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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“…The performance characteristics of the CR-modified asphalt have been discussed in other studies. 21,26,27 The CR having a maximum size of 600-µm (30 mesh) shredded from waste truck tires was also blended with the base asphalt binder (PG 58-28). This asphalt binder was supplied from a construction site in Michigan, USA.…”

Section: Experimental Workmentioning

confidence: 99%

Experimental and theoretical investigations on the viscosity of heterogeneous asphalt binders

Diab

2017

Journal of Elastomers & Plastics

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The inherent multiphase structure of heterogeneous asphalt binders (additives containing binders) may complicate viscosity understanding and predictions in the Newtonian or non-Newtonian response. The objective of this article is to understand the viscosity characteristics of heterogeneous asphalt binders based on experimental and theoretical investigations over a wide range of conditions the matter may encounter in the field (temperatures and oxidative aging). Selected materials representing the generic additives commonly used for pavement construction including styrene-butadienestyrene block copolymer and ethylene-vinyl acetate copolymer, crumb rubber, and two mineral fillers, namely hydrated lime and fly ash, were utilized separately at different concentrations to produce the heterogeneous materials under study. The effects of varied temperatures as well as short-and long-term aging processes were studied for the materials over a wide range of shear rates. A further theoretical investigation was carried out by addressing the capability of Tscheuschner model to predict the flow behavior under the aforementioned conditions. In addition, the zero shear viscosity said to be an intrinsic characteristic of asphalt binders was evaluated using the regression analysis of data predicted from Tscheuschner model. Overall, the shear thinning behavior of heterogeneous asphalt binders occurred at low shear rates as compared to the base binder, especially at low temperatures. Emphasis was placed on the repeatability of the model predictions under different conditions, which could be an initiative to provide a simple but accurate representation of the viscosity of heterogeneous asphalt binders.

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Environmental and mechanical performance of crumb rubber modified warm mix asphalt using Evotherm

Cited by 113 publications

References 38 publications

Review of warm mix rubberized asphalt concrete: Towards a sustainable paving technology

Review of warm mix rubberized asphalt concrete: Towards a sustainable paving technology

Uso del caucho granulado en mezclas asfálticas: Una revisión literaria

Experimental and theoretical investigations on the viscosity of heterogeneous asphalt binders

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