I. Pre-construction Preparation
Before construction, it is necessary to determine the required materials and tools, such as sealing asphalt and gravel, ensuring that the selected materials meet the construction requirements. Simultaneously, check the smoothness and quality of the road surface, repairing or replacing damaged sections as necessary to ensure the overall road surface is smooth and stable.
II. Hot Mix Sealing Coat Construction
Material Preparation: Select appropriate asphalt materials and add suitable amounts of cellulose and plasticizers as specified. Determine the required temperature based on ambient temperature and humidity.
Applying Adhesive: Apply a suitable adhesive to the asphalt layer to improve the adhesion between the sealing coat and the original road surface.
Laying the Asphalt Sealing Coat: Under suitable temperature and humidity conditions, use hot mix equipment to evenly lay the asphalt on the road surface, compact it, and ensure the required smoothness.
Laying Gravel: Quickly lay gravel on the asphalt to ensure rapid bonding.
Compacting the Gravel: Use a road roller or vibratory roller to compact the laid gravel to ensure overall smoothness and density.

III. Cold Mix Seal Coating Construction
Material Preparation: Select a multi-layer composite asphalt material, determining the required mix ratio based on environmental conditions and road type.
Applying Adhesive: Lay a 1-2cm thick layer of adhesive on the existing road surface, cleaning away any debris to ensure adhesion between the original surface and the seal coat.
Laying Seal Gravel: Lay gravel on the road surface to a thickness of 2-3cm, spreading it evenly.
Laying Seal Asphalt: Evenly spread the multi-layer composite asphalt on the surface and compact it using an air roller, ensuring at least 90% compaction.
Waiting for Asphalt to Cure: Allow approximately 6-8 hours for the asphalt to cure completely, then re-compact it with an air roller to achieve higher density and smoothness.
IV. Precautions
Selecting Appropriate Seal Materials: Choose appropriate seal coat materials, such as asphalt and gravel, based on actual conditions to ensure construction quality.
Temperature Control: Determine the required temperature range before construction and select appropriate construction time and temperature based on ambient temperature and humidity.
Ensuring Smoothness: After the seal coat is laid, promptly check the smoothness and compaction of the road surface and make necessary adjustments.
Safety Precautions: During construction, pay attention to safety, wear appropriate work clothes and protective equipment, and follow safe operating procedures.
Environmental Protection and Energy Conservation: Select seal coat materials and implement various environmental protection measures during construction, while minimizing the use of oil and gas energy resources.
【Conclusion】 Asphalt seal coat construction requires attention to construction steps and techniques, such as selecting appropriate seal coat materials, controlling temperature, and ensuring smoothness. Properly applying a high-quality seal coat can not only extend the service life of the road surface but also improve road smoothness and vehicle driving safety.