Cracks are the root of all problems for pavement. Once a crack forms, water is able to seep through and erode the base causing deterioration. Finally causes pavement surface alligator cracks, potholes, and other diseases. For that reason, crack sealing is recommended as the most cost-effective, preventative pavement maintenance procedure.

2. When is the best season to apply crack sealing?

Spring and autumn, temperature is at 5-20°C. The crack width at this temperature is just about the annual average value. The tensile and tearing of the filling material at extreme high and low temperature, and the extrusion flow are all in a relatively average state. Therefore, the spring and autumn seasons are usually chosen to use the joint glue to crack the asphalt concrete pavement. Treatment is the most appropriate.

3. The needed material and machines.

Sealant: High quality hot - patched asphalt crack sealant consisting of synthetic rubber or recycled rubber or a mixture of both with asphalt binder and other modified materials. At room temperature is solid block, after heating melting into a super extension and bonding of the black colloid, can effectively seal road cracks and joints, and keep long-term sealing effect. Traffic will resume after the construction is completed.

Machines: Crack router, Vacuum cleaner, Crack sealing machine

Crack router can track the irregular cracks and quickly groove them into uniform grooves with six special blades to form new bonding surfaces. Strengthen the bonding performance between the filling material and the sidewall of the slot to extend the service life of the road after maintenance.

Vacuum cleaner is the equipment to clear the cracks after grooving. It can absorb the dust and debris after grooving to ensure the glue is closely bonded to the cutting surface.

Crack sealing machine is used for heating sealant and pouring materials evenly into the treated cracks to achieve the purpose of waterproof. Applicable to residential, municipal, highway, airport, and other roads.

4. Construction process