Asphalt pavement construction to undertake various quarters, factories, factory zone, playgrounds, schools, indoor and outdoor parking lot asphalt pavement construction project for the construction of asphalt concrete pavement asphalt material mainly asphalt and coal tar pitch, in addition, There are natural asphalt. Some countries or regions have also adopted, or mixed with natural asphalt mixing of. Aggregates used by different species can be divided into gravel, gravel, sandy, several types of slag to gravel using the most common. The nature and grade requirements for asphalt with asphalt pavement type, traffic conditions and sections of the region's climate varies; hot mix or calorimetry and poured on the hot areas and heavy traffic roads should use thicker asphalt