Influence of Temperature and Pressure on the Dynamic Properties of Rubber-Modified Asphalt Concrete

Wang, Judith C.; Zeng, Xiangwu

doi:10.1061/(asce)0899-1561(2006)18:1(125)

Cited by 23 publications

(11 citation statements)

References 12 publications

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“…The use of RMAC as an underlayment material as compared to other traditional paving materials has its most profound effect in vibration control at locations away from the track. This is somewhat different from what was previously found in our two-dimensional simulations (Wang and Zeng, 2005). This may be attributable to the addition of the third dimension1 the effect of the load traveling in the out-of-plane, transverse direction instead of being confined within one plane and the ability for energy to dissipate in the out-of-plane direction had a significant effect in the response of the system.…”

Section: Conclusion and Implications For Designcontrasting

confidence: 99%

“…Utilizing an impermeable manmade material such as RMAC as a sub-ballast underlayment also comes with the benefits of creating a waterproof, strengthened track support and a uniformly stable surface for track construction (Rose and Hensley, 1991). RMAC has also been shown to retain its high stiffness over extended periods of time weathering in full seasonal cycles (Wang and Zeng, 2005). These results indicate that using RMAC instead of traditional asphalt concrete will result in a significantly longer life span with less need for maintenance and therefore a lower cost.…”

Section: Introductionmentioning

confidence: 93%

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Three-Dimensional Finite Element Simulations of Ground Vibration Generated by High-Speed Trains and Engineering Countermeasures

Wang

Zeng

Mullen

2005

Journal of Vibration and Control

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In this paper we discuss the benefits of using rubber-modified asphalt concrete in high-speed railway foundations. We present the results from a series of three-dimensional finite element simulations modeling a high-speed train foundation utilizing various trackbed materials. Four trackbed materials were tested for their relative vibration attenuation capacities: ballast, concrete, conventional asphalt concrete, and rubber-modified asphalt concrete. Additionally, studies varying the speed and the weight of the passing train were performed. Parametric studies varying the dimensions of the trackbed underlayment were also examined. From these numerical simulations, it is shown that rubber-modified asphalt concrete outperforms other traditional paving materials in ground vibration attenuation. It is also shown that the speeds and weights of the passing trains and the dimensions of the trackbed have significant effects on the relative performance of the paving materials. Implications for design are discussed.

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Section: Conclusion and Implications For Designcontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 93%

Three-Dimensional Finite Element Simulations of Ground Vibration Generated by High-Speed Trains and Engineering Countermeasures

Wang

Zeng

Mullen

2005

Journal of Vibration and Control

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“…An investigation about using rubber-modified asphalt illustrated that dry asphalt rubber concrete improves the sub-ballast fatigue resistance [ 117 , 118 ]. In particular, it improves the track elasticity and its effectiveness in damping vibrations [ 119 ]. Furthermore, it has been discovered that asphalt modified with 10 to 20% rubber leads to an improvement in the shear modulus and damping ratio, though both factors are significantly related to temperature [ 120 ].…”

Section: Review Of Case Studiesmentioning

confidence: 99%

A Review of Different Aspects of Applying Asphalt and Bituminous Mixes under a Railway Track

et al. 2020

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Asphalt is a common material that is used extensively for roadways. Furthermore, bituminous mixes have been used in railways, both as asphalt and as mortar. Different agencies and research institutes have investigated and suggested various applications. These studies indicate the benefits of bituminous material under railways, such as improving a substructure’s stiffness and bearing capacity; enhancing its dynamic characteristics and response, especially under high-speed train loads; waterproofing the subgrade; protecting the top layers against fine contamination. These potential applications can improve the overall track structure performance and lead to minimizing settlement under heavy loads. They can also guarantee an appropriate response under high-speed loads, especially in comparison to a rigid slab track. This review paper documents the literature related to the utilization of asphalt and bituminous mixes in railway tracks. This paper presents a critical review of the research in the application of asphalt and bituminous mixes in railway tracks. Additionally, this paper reviews the design and construction recommendations and procedures for asphalt and bituminous mixes in railway tracks as practiced in different countries. This paper also provides case studies of projects where asphalt and bituminous mixes have been utilized in railway tracks. It is anticipated that this review paper will facilitate (1) the exchange of ideas and innovations in the area of the design and construction of railway tracks and (2) the development of unified standards for the design and construction of railway tracks with asphalt and bituminous mixtures.

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“…A nivel mundial, la gran mayoría de los neumáticos de desecho se depositan en vertederos, con consecuencias ecológicas catastróficas y, en particular, serias amenazas para la salud humana (por ejemplo, incendios, plagas y contaminación del suelo) (Rodríguez, Tarpoudi, Cavalli, Poulikakos y Bueno, 2020), debido a la creciente conciencia ambiental, y el afán por recuperar el caucho granulado (CR) y transformarlo en un material eficiente, por eso su uso ha ido aumentando en la producción de asfalto ya que varios investigadores han argumentado que el asfalto modificado con CR se comporta más eficazmente que el concreto asfáltico convencional (Wang y Zeng, 2006).…”

Section: Introductionunclassified

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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Influence of Temperature and Pressure on the Dynamic Properties of Rubber-Modified Asphalt Concrete

Cited by 23 publications

References 12 publications

Three-Dimensional Finite Element Simulations of Ground Vibration Generated by High-Speed Trains and Engineering Countermeasures

Three-Dimensional Finite Element Simulations of Ground Vibration Generated by High-Speed Trains and Engineering Countermeasures

A Review of Different Aspects of Applying Asphalt and Bituminous Mixes under a Railway Track

Uso del caucho granulado en mezclas asfálticas: Una revisión literaria

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