After a period of highway traffic, the asphalt pavement often has cracks, potholes and other diseases, which not only affect the aesthetics of the pavement, but also pose a threat to the performance and safety of the pavement. At this point, a layer of sand sealing can be applied to the road surface.
At present, there are two processes for the sand sealing layer, one is the sand fog sealing layer, and the other is the sand sealing layer that is sprinkled (sprinkled) at the same time. Today we are talking about the sand seal layer that is paved synchronously. Preventive maintenance construction technology for construction using synchronous gravel sealing equipment. Pave the asphalt pavement with a layer of abrasion-resistant and adhesive material. The sand sealing layer can effectively improve the appearance of the road surface, improve the anti-skid performance and durability of the road surface, and also beautify the appearance of the curb, shoulder and other areas.
When carrying out the construction of the sand sealing layer, the asphalt pavement needs to be pretreated first to remove the debris, loose gravel particles, dust, etc. of the pavement to keep the pavement clean and dry. Then, the abrasion and binder material are spread on the road surface at the same time using a synchronous gravel sealing device, and rolled by rollers or special paving equipment to fully combine the abrasion and binder materials.
The advantage of sand sealing layer is that the construction speed is fast and efficient, which can effectively improve the performance and safety of the pavement, and can also improve the appearance color and durability of the pavement. In addition, the construction process of the sand sealing layer is simple and easy to master, the requirements for construction machinery and equipment are not high, and the material production is simple.
However, there are also some problems that need to be paid attention to in the construction of sand seal. For example, the amount and quality of abrasive and adhesive materials need to be strictly controlled during the construction process to avoid material waste or substandard quality.