Evaluation of foamed bitumen efficiency in warm asphalt mixtures recycling

Abreu, Liliana; Oliveira, Joel; Silva, Hugo Manuel Ribeiro Dias da; Palha, Daniela; Fonseca, Pedro

doi:10.1201/b18853-2

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…The research in the field of producing high-quality pavements based on warm asphalt mixes are being actively carried out by scientists from different countries [4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

The Effectiveness of Using RAA-TA Additives for the Preparation of Warm Asphalt Concrete

Yadykina

Gridchin

Trautvain

et al. 2017

AMM

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The possibility to reduce the temperature during manufacturing and the temperature of compaction of asphalt mix by introducing the specially designed RAA-TA (Road Adhesive Additive for the warm asphalt concrete) additive to the bitumen has been demonstrated. Reducing the preparation temperature for asphalt mixture to 130 ° C, and the compaction temperature of the hot mix to 100 ° C, by using the additives, the characteristics of warm asphalt concrete meet the requirements of State Standards for hot asphalt concrete. The results indicate that the administration of additives improves strength at 20 and 50 ° C and reduces this index at 0 ° C, and with increasing the concentration of the researched additive its positive effect increases. The greatest effect of the additive is observed on such parameters as water saturation and water resistance of asphalt concrete, which is obviously connected with the improved encapsulation of mineral materials by bitumen due to the reduction of its viscosity and improvement of adhesive properties due to the additive composition. This will reduce the fuel consumption, the emissions of harmful substances into the atmosphere during the bituminous mixture production and asphalt coating making, as well as increase the distance of its transportation to the work site. At the same time the physical and mechanical characteristics of asphalt concrete with the addition of RAA-TA do not deteriorate. As a result of reducing the temperature of laying and compacting of asphalt mix the season of road construction can be extended and the pressure on the environment can be significantly reduced.

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“…The research in the field of producing high-quality pavements based on warm asphalt mixes are being actively carried out by scientists from different countries [4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%