Asphalt concrete pavement has good anti-skid and smooth, solid, good stability and so on, and driving comfort, no jumping phenomenon, in our high-grade highways and urban trunk road construction has been widely used. However, in the road construction process, if the quality control is not good, will directly affect the quality of road and traffic safety. I believe that you can control the construction phase and the construction phase of the quality, to ensure the quality of road construction. Quality control of the construction preparation phase First, to control the quality of raw materials. Asphalt concrete raw materials mainly include asphalt, gravel, sand, slag and so on. Asphalt as the most critical raw materials, should be strictly checked the number of their shipment, shipment date, factory test a single, according to the provisions of the standard and frequency sampling test. Different sources, different specifications of the asphalt should be stored separately, not mixed. Asphalt cans should be closed tightly, to avoid water into the asphalt storage time should not be too long, storage temperature should not be too high, the temperature during the construction period between 90 �� ~ 140 �� is appropriate. Gravel is the backbone of asphalt concrete pavement, is the main support material, the specifications of gravel by the type of asphalt concrete and the thickness of each layer to determine the technical indicators to meet the regulatory requirements. Sand to use hard, clean, dry, no weather, no impurities and the appropriate level of high quality natural sand or machine sand, mud content should be less than 3%. Mineral powder to dry, clean. hot mix asphalt materials honda backpack concrete vibrator types of building construction crack sealing in concrete