Before the construction of synchronous gravel sealing layer construction, it is necessary to conduct on-site investigation of the pavement condition of the construction section to understand the specific situation of the pavement, such as the degree of damage to the pavement, traffic flow, etc. This information will help to develop a suitable construction plan and select the appropriate materials and equipment.
When formulating the construction plan, it is necessary to carefully analyze the construction data, determine the construction structure, the selection of bonding materials and gravel, and the treatment of the original disease. For ruts, potholes and other diseases, it is necessary to repair to ensure that the road surface has sufficient strength and flatness. At the same time, it is necessary to do a good job in the preparation of asphalt and gravel, and arrange various working personnel to deploy supporting machinery and tools. This stage of the work needs to fully consider various factors and formulate a comprehensive and detailed plan to ensure the smooth progress of the construction.
Before the construction begins, it is necessary to set up obvious construction reminder signs in the construction section. Then, it is necessary to confirm that the asphalt, crushed stone, supporting equipment, etc. are ready, and that the synchronous crushed stone sealer is in good condition and the parameters are set correctly. Before starting construction, tests should be carried out on site to check the performance of equipment and materials and to determine the final construction parameters.
During the construction process, the construction section needs to be cleaned first to ensure that the road surface is free of dust and debris. For other contaminants, it is necessary to wash or sweep to ensure the cleanliness of the road surface. In the part of the pavement that is washed with water, it is necessary to wait for the water to completely evaporate and dry before proceeding with construction.
In order to ensure the quality of the work, it is often necessary to pave the test section and adjust the operating parameters according to the effect until the desired result is achieved. Then, continuous construction over long distances can be carried out. If it is necessary to carry out construction in separate pairs, the other pair can be opened to traffic. For the lap seam of the sub-sealing layer, the treatment should be done to ensure that the seam is tight and smooth.
During the construction process, manual feeding and trimming work are also required. Subsequently, a rubber-tyred roller is used for 3-4 passes to ensure that the asphalt and gravel are tightly bonded to the road surface. If natural rolling is used, the speed of passing vehicles needs to be limited. Finally, the remaining material and pumice stones should be cleaned up**.
After the construction is completed, maintenance work needs to be carried out. When modified asphalt or rubber asphalt is used as the cementing material, it can be opened to traffic after rolling and floating. If modified emulsified asphalt is used as a cementing material, it should wait for its demulsification, water evaporation and molding before opening to traffic. In the initial stage of opening to traffic, traffic should be strictly controlled, and the speed and driving behavior of vehicles should be limited to ensure the integrity and safety of the road surface.