Keeping the Asphalt in the Road - Experiences from Different Asphalt Recycling Technologies

Biedermann, Andreas; Jacobi, Christian

doi:10.4028/www.scientific.net/amr.723.630

Cited by 2 publications

(3 citation statements)

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“…Selected low temperature asphalt technologies, according to [2] During the last years, a number of technologies that allow a significant reduction of the production temperature have emerged: Popular technologies for temperature reduction are based on a combination of the use of foam bitumen, addition of waxes and other agents and changing the mixing sequence. This also underlines the growing number of varied solutions that have appeared on the market in the meantime (figure 1, for a rough classification and selected technologies).…”

Section: Figmentioning

confidence: 99%

“…These high temperatures define the big part of the energy consumption and in parallel the CO 2 emissions per ton of asphalt (see figure 1). By lowering the asphalt temperature from 180 °C to 115 °C, the energy consumption on average is reduced by 1.5 kg oil per ton produced asphalt [2]. Given the fact of high costs of energy and the need to reduce CO 2 emissions whenever possible, warm mix asphalts offer a very good solution to the asphalt industry to go one step into the right direction.…”

Section: Introductionmentioning

confidence: 99%

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Lowering the Asphalt Production Temperature - Foam Asphalt Allows Greener Roads

Biedermann

Jacobi

Bieder

2013

AMR

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New technologies enable the manufacturing of asphalt at reduced temperatures. As a result The energy consumption per ton of asphalt and the emissions at the road construction site drop significantly. Whilst conventional asphalt is produced at around 170 ° C, the low - temperature processes of today allow production temperatures of around 100 ° C. Various technologies for this are ready for application by road construction industry. Foam bitumen, waxes and other additives, special bitumen or alternative mixing cycles can be suitable for use, depending on the application. Changing the way of asphalt production in an industry takes several years or even decades. In this paper, we will present low temperature asphalt technologies based on the promising technology of foam bitumen and how they are applied in practice.

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Section: Figmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Lowering the Asphalt Production Temperature - Foam Asphalt Allows Greener Roads

Biedermann

Jacobi

Bieder

2013

AMR

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“…In Europe during the last 30 years the amount of re-used reclaimed asphalt (RAP) increased steadily and in some projects reached close to 100 % [5]. For many years the plant technology has been ready to process high amounts of RAP [3]. The main reasons to use RAP are raw material shortage, economical reasons and environmental aspects.…”

Section: Introductionmentioning

confidence: 99%

Asphalt recycling and foam bitumen – a combined approach

Bieder¹,

Höfer²,

Demarmels³

2016

Proceedings of 6th Eurasphalt &Amp; Eurobitume Congress

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To save resources and reduce the energy consumption during asphalt mix production there are three main approaches: addition of reclaimed asphalt (RAP), lower production temperatures, and reduced moisture content in raw materials. Whereas a high moisture content only influences, thus increases the energy consumption and emissions in the plant, RAP addition and lower production temperatures have a direct impact on asphalt mix properties. The main goal of this study is the production of high quality asphalt mix. Experience has proven that high ratios of reclaimed asphalt can be incorporated into hot mix asphalt at equal quality. Furthermore using foam bitumen to produce warm mix allows mixing and compaction at reduced temperatures with comparable properties to hot mix. Combining asphalt recycling and foam bitumen is a step forward to an efficient and sustainable use of resources. The feasibility of producing high quality warm mix asphalt with foam bitumen and various high RAP percentages was demonstrated in field trials. In several asphalt mixing plants mixes were produced, paved and compacted at reduced temperatures. Asphalt production and laying was attended and analyzed. Additionally, for direct comparison construction sites with conventional hot mix were observed. Mechanical mix properties equal to hot mix asphalt were found independent of the RAP content and production temperature.

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Keeping the Asphalt in the Road - Experiences from Different Asphalt Recycling Technologies

Cited by 2 publications

References 0 publications

Lowering the Asphalt Production Temperature - Foam Asphalt Allows Greener Roads

Lowering the Asphalt Production Temperature - Foam Asphalt Allows Greener Roads

Asphalt recycling and foam bitumen – a combined approach

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