Performance of Warm Mix Asphalt containing Sasobit®: State-of-the-art

Jamshidi, Ali; Hamzah, Meor Othman; You, Zhanping

doi:10.1016/j.conbuildmat.2012.08.015

Cited by 303 publications

(116 citation statements)

References 124 publications

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“…When decreasing the temperature, the additive can crystallize inside the asphalt, increasing its stiffness. Therefore, some researchers have reported an increase in the resistance to permanent deformation of WMA mixtures manufactured with asphalt modified with Sasobit ® (Biro et al 2009;Goh and You 2009;Silva et al 2010;Hossain et al 2011;Liu et al 2011;Capitão et al 2012;Wu and Zeng 2012;Xiao et al 2012a;Jamshidi et al 2013Jamshidi et al , 2013a. For example, Hossain et al (2011) report an increase in the maximum service temperature performance grading (PG) of 6 °C (from PG 64 °C to 70 °C) when the base asphalt cement was modified with 2 % Sasobit ® by weight of asphalt.…”

Section: Modification Of the Asphalt Or Asphalt Mixture With Additivesmentioning

confidence: 99%

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: Modification Of the Asphalt Or Asphalt Mixture With Additivesmentioning

confidence: 99%

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

Quintana¹,

Hernández-Noguera²,

Reyes³

2015

ing.inv.

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“…and TSR (%) is expressed as: TSR = ITS wet ITS dry 100; (2) where P is the maximum vertical load applied (kN), t is the average height of the specimen (m), and d is the average diameter of the specimen (m). Figure 2 shows fa (N.m), which is de ned by Witczak et al [16] as the area under the load vertical deformation curve up to deformation incurred at maximum load for both dry and wet samples.…”

Section: Test Methodsmentioning

confidence: 99%

“…The asphalt industry has incorporated reclaimed asphalt pavement and other industrial by-products and waste materials into asphalt during the past few decades [1]. Over the last decade, Warm Mix Asphalt (WMA) tech-nology has emerged, which lowers greenhouse gas emissions, reduces exposure of workers to asphalt fumes, and minimizes the use of natural resources [2]. This innovative technology signi cantly reduces the mixing and compaction temperatures of asphalt mixtures by lowering the viscosity of asphalt binders during mix production [3].…”

Section: Introductionmentioning

confidence: 99%

Effects of moisture on warm mix asphalt containing Sasobit

Nabizadeh¹,

Naderi²,

Tabatabaee³

2017

Scientia Iranica

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Abstract. The asphalt industry has been at the forefront of sustainable development.Warm Mix Asphalt (WMA) has been developed to cope with issues such as high energy prices and air pollution. These mixes require less energy and generate fewer pollutants during production in comparison with conventional Hot Mix Asphalt (HMA). Although a promising technology, the durability of WMA is not clear because long-term WMA eld performance data is limited. This study investigated the susceptibility of Sasobit-modi ed WMA to moisture, since moisture damage is a major cause of premature pavement failure in asphalt concrete. To this end, WMA samples were made using di erent concentrations of Sasobit and the results were compared with those from HMA mixtures. The e ect of hydrated lime as an anti-stripping agent was also investigated. The tensile strength ratios indicate that the introduction of hydrated lime and Sasobit increased the resistance of asphalt mixtures to moisture. Fracture energy and toughness were used to evaluate the crack resistance of specimens under dry and wet conditions. In comparison with Sasobit, hydrated lime increased crack resistance of mixtures. The results indicate that hydrated lime can be used as a compatible and e ective anti-stripping agent for WMAs containing Sasobit.

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“…Production of HMA at high temperatures can result in undesirable high energy consumption [40], greenhouse gas (GHG) emissions, fumes and odors [41], deteriorating inhabitants locations. In addition, the high temperature requirement results in shorter paving seasons, and longer cooling periods [42].…”

Section: A Case Studiesmentioning

confidence: 99%