The Structure and Properties of Asphalt Concrete on the Basis of Waste Foundry Sand

Abstract:

The features of the use of waste foundry sand to obtain secondary products are presented. The properties of the surface of mineral particles of waste molding sand are described. It is shown that on the surface of the particles there is a porous layer capable of increasing the adhesion forces of mineral particles with bitumen in the production of asphalt concrete. It has been established that the modified surface of the waste foundry sand contains up to 40% carbon, which provides an increase in the adhesion force between the mineral particles of the waste foundry sand and bitumen. It has been experimentally proven that the use of waste foundry sand in the composition of asphalt concrete can improve its physical and mechanical properties.

• Periodical: Materials Science Forum (Volume 1037)
• Pages: 721-728
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1037.721
• Online since: July 2021
• Authors: Konstantin G. Pugin*
• Keywords: Asphalt Concrete, Building Materials, Construction, Highway, Mechanical Characteristics, Physical, Specific Surface, Waste Foundry Sand

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