Vladimir, Vladimir, Russian Federation
Vladimir, Vladimir, Russian Federation
UDK 625.8 Дорожные покрытия. Дороги из плит. Мостовые. Щебеночные и другие покрытия. Приготовление и использование дорожностроительных материалов. Дороги по типу покрытия
The significant increasing of both road traffic and loads on the vehicle axle led to unavailability of asphalt concrete to provide the necessary durability of road surfaces. The durability of road surfaces is directly related to the quality of the construction materials used and, above all, to the roadstone aggregate used to form the asphalt concrete. The quality assurance and control of road products requires a systematic approach, which is ensured primarily by having a proper quality assessment system, methods and instruments for testing the properties of road materials, products and structural layers, in accordance with the established standards, indicators. The paper considers the issues of optimizing the choice of a large aggregate (crushed stone) for asphalt concrete in terms of the best adhesion with bitumen used by road construction companies of the Vladimir region. For laboratory testing we use the roadstone aggregate by various manufacturers in order to produce a durable, shear-resistant and crack-resistant road surface material. By the experimental results, crushed gabbro-diabase crushed stone is the most suitable for the preparation of hot asphalt mixtures. The paper contains a crushed stone test report, information on gabbro-diabase crushed stone selection of asphalt concrete composition and results of asphalt concrete testing.
coarse aggregate, crushed stone, gabbro-diabase, asphalt concrete
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