Perm, Perm, Russian Federation
Perm', Perm, Russian Federation
With increasing temperature in asphalt concrete surfaces, the viscosity of bitumen decreases, which significantly reduces the shear stability of the material and leads to the appearance of defects (waves, puddles) on the roads. These types of plastic deformations also occur in case of insufficient consideration of asphalt concrete thermal properties. To prevent formation of waves and lapping, asphalt-concrete mixture the road services usually select the additives increasing shear stability of material. This approach is used only at the early stages of design. But in conditions of exploitation of highways, the issue of the specified defects exception is quite difficult. It is mainly solved by the restriction of heavy vehicles movement in day time, when the asphalt concrete had the maximum influence of temperature and solar radiation. We assess the regulatory documentation on traffic restrictions in Perm Krai, and the feasibility of introducing the special restrictions considering both the influence of the temperature and increase in vehicle traffic during the summer period.
traffic restrictions, swig resistance of asphalt concrete, summer restrictions, traffic intensity, safety of highways
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