Development of (half-) warm foamed bitumen mixes: state of the art

Ven, M.F.C. Van de; Kj, Jenkins; Voskuilen, Jan; Beemt, R. Van den

doi:10.1080/10298430601149635

Cited by 59 publications

(24 citation statements)

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“…Mobil Oil Australia bought the patent rights for bitumen foaming from Csanyi in 1968 and modified his technique by replacing steam with cold water, which marked a beginning for an increased interest in application of CMA [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Application of synthetic wax for improvement of foamed bitumen parameters

Iwański

Chomicz-Kowalska

Maciejewski

2015

Construction and Building Materials

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h i g h l i g h t sWe evaluated a foamed 50/70 pen bitumen modified with Fischer-Tropsch wax. The additive reduced the dynamic viscosity of the binder above 100°C. The foam expansion ratio increased linearly with additive dosage. The foam half-life increased linearly with additive dosage. The foam index increased with the increase of FT wax concentration. a b s t r a c tThe aim of the research was to evaluate the properties of foamed bitumen, produced from a FischerTropsch synthetic wax modified 50/70 penetration grade bitumen for use as a binder in road construction layers. The binders were subjected to conventional tests (including penetration, softening point, Fraass breaking point and dynamic viscosity) as well as bitumen-foam-specific testing (including expansion ratio, half-life and foam index at different foaming water contents). Optimum amounts of foaming water and Fischer-Tropsch wax were identified and the binders were classified as relevant for different low-energy bitumen mix production techniques.

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Section: Introductionmentioning

confidence: 99%

Application of synthetic wax for improvement of foamed bitumen parameters

Iwański

Chomicz-Kowalska

Maciejewski

2015

Construction and Building Materials

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“…In the foaming process, a certain amount of water is added to the hot binder and then the water is turned into steam, which results in a volume expansion of binder and consequently, a reduction of the binder's viscosity [15]. This temporary reduction facilitates aggregate coating and thereby improved workability at reduced temperatures.…”

Section: Fig2 Gradation Curves Of Evaluated Ac Mixturesmentioning

confidence: 99%

Investigation of Rutting Performance of Different Warm Mix Asphalt (Wma) Mixtures

Syed¹

2018

GEOMATE

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Use of warm mix asphalt (WMA) in pavement industries has been growing rapidly over last decade because it can lower down the construction temperature and subsequently reduces the environment pollution and energy consumption. + WMA sample showed significant enhancement in rutting resistance due to presence of polymer. In addition to mixture test, extracted binders from these mixtures were also evaluated though Superpave performance grade (PG) and multiple stress creep recovery tests. The performance orders of the extracted binders from these two tests are also similar as the mixture performance. This study also found that non-recoverable compliance (Jnr) value obtained from the MSCR test demonstrated better correlation with HWTT (R 2 = 0.96) compared to Superpave rutting parameter (R 2 = 0.68).

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“…There is an optimum water content at which the foam is sufficient to improve the workability of the mixture without the water being retained in the asphalt, which would generate problems associated with moisture damage, a decrease in rutting resistance, and loss of adhesion between the binder and the stone aggregate. Another aspect that has been shown with foamed asphalt technology is that this asphalt adheres more to the fine fraction of the stone aggregate than to the coarse fraction ( Van de Ven et al 2007). This behavior makes it necessary to add adhesion improver additives or coating promoting additives of aggregates to asphalt so that the coarse fraction does not remain uncovered by asphalt, which would lead to the development of problems associated with moisture damage and stripping in the mixture.…”

Section: Foamed Asphaltsmentioning

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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Development of (half-) warm foamed bitumen mixes: state of the art

Cited by 59 publications

References 0 publications

Application of synthetic wax for improvement of foamed bitumen parameters

Application of synthetic wax for improvement of foamed bitumen parameters

Investigation of Rutting Performance of Different Warm Mix Asphalt (Wma) Mixtures

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

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