Tungsten Oxide

Some asphalt pavements often have long, thin, split cracks or web, this kind of situation, we usually call it "cracking". There are many reasons for cracking, and some vehicles overrun the load too much, and some asphalt material reasons, here we discuss briefly the material factors. In general, the cause of asphalt pavement cracking of pavement is extreme temperature or temperature fatigue effect. In short, the asphalt pavement has experienced a large expansion and contraction, and once the temperature stress exceeds the fracture strength of asphalt concrete, cracks will arise. Moreover, the cracks in the road is just the beginning, the days later, more sun and rain and traffic rolling, asphalt mixture on the temperature changes will become increasingly sensitive, when the ambient temperature is too high, resulting in high temperature rut; temperature is too low, crack extension re-cracking. It will soon turn into a pothole, and eventually a collapse or even more se...