This method is simple to operate, less equipment and personnel, repair costs lower, faster. However, there are the following shortcomings: (1) due to the crack is not clear, cracks on both sides of the bond surface is not strong, usually the second year to be re-irrigation, resulting in increased costs accumulated care; (2) summer high temperature, asphalt volume expansion overflow (3) winter low temperature, the asphalt prone to brittle fracture and loss of sealing effect; (4) has not been grooved, can not guarantee the asphalt (3) the weather is not easy to ensure that the asphalt (5) a wide range of construction operations, discrete and long operating time, increasing the risk of operations. Overall, such materials are prone to aging and loss of viscoelastic properties, poor curing effect. Applicable to low-grade highways. Road Sealing Machine - Road Machinery Equipment Manufacturers - Doan Machinery construction equipment used for compaction crack filler asphalt pavement to repair truck-mounted changeable message signs