Research and Analysis of Asphalt Pavement Water Damage from quangongzi's blog

Water damage manifestations are complex and diverse, but under the same climatic conditions, the failure modes are similar. The analysis of the mechanism of water damage is mainly composed of adhesion - flaking theory, hydrostatic pressure and hydrodynamic pressure. It is generally believed that the adhesion - peeling theory is the main mechanism of water damage.Double Steel Roller - Road Machinery Equipment Manufacturers - Doan Machinery

Asphalt pavement construction period is short, the surface is smooth, easy maintenance and repair, is one of the main forms of the road. However, the phenomenon of early damage to the asphalt pavement is widespread, such as loose, pit, rut and so on. Although the early damage to the road is largely related to the overload and overload of the car, but in fact the water damage is also caused by the early destruction of asphalt pavement one of the main models, China from the south to the north, there have been due to water damage caused by high-speed High damage to the highway area. The time of emergence, and some less than one year after the completion of the opening or two years, only a few short months. Especially in southern China, the climate is warm and humid, precipitation is greater, water damage problem is more prominent. Therefore, the problem of water damage of asphalt pavement of expressway has become a hotspot.

Water damage to the form of expression, at present, the domestic scholars have the concept of water damage has a more clear and consistent understanding that water damage refers to the water asphalt pavement cracks, cracks into the road after the internal, in the freeze-thaw, vehicle tire dynamic load The water pressure gradually penetrates into the interface of asphalt and mineral material or the interior of the asphalt, so that the adhesion between the asphalt and the mineral material decreases and the adhesive capacity is gradually lost. The asphalt film gradually changes from Mineral material surface stripping, asphalt mixture dross, loose, resulting in asphalt pavement structure of the overall damage.