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Features of the Formation of Properties of Stone-Mastic Asphalt Concrete Based on a Warm Polymer Modified Binder

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Abstract:

Stone mastic asphalt concrete is one of the main types of asphalt concrete used for the construction of road surfaces. The quality, reliability and longevity of which depends on road safety of vehicles. To reduce the intensity of aging processes occurring at the stage of production and laying of asphalt concrete, "green" technologies are used, based on the use of physical and chemical processes that reduce the viscosity of bitumen to produce warm asphalt mixtures. This paper discusses the features of the formation of properties of crushed stone-mastic asphalt mixes SMA-15 based on polymer bitumen modified, compacted at lower temperatures, relative to traditional asphalt concrete. The influence of chemical additives of domestic and foreign production of DAD-TA and Cecabase RT 945 on the properties of modified binder and asphalt concrete was studied. It was established that they have a positive plasticizing effect on the modified bitumen binder in crushed stone-mastic asphalt concrete without a decrease in heat resistance and adhesive strength, which made it possible to compact asphalt concrete samples at low temperatures (up to 130°C) without negatively affecting the strength and deforming properties of asphalt concrete.

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Periodical:

Materials Science Forum (Volume 992)

Pages:

200-205

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.992.200

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Online since:

May 2020

Authors:

S.Yu. Shekhovtsova*

Keywords:

Adhesion, Cecabase RT 945, DAD-TA, Organic Temperature-Lowering Additives, Polymer Bitumen Modified, Shear Resistance, Stone Mastic Asphalt Concrete

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© 2020 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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