Adhesive in Road Maintenance: The Core Role of Asphalt Spraying
Under long-term loads and environmental factors, the asphalt mixture on the road surface develops fine cracks and loosens. Directly covering it with new mixture results in insufficient interlayer bonding, easily leading to peeling and displacement. Therefore, a highly adhesive medium needs to be introduced between the existing pavement and the new paving material. Hot asphalt spraying provides a solution, essentially involving the uniform spraying of liquid asphalt onto the surface under precisely controlled temperature and flow. This asphalt film acts as an invisible structural adhesive layer, its function far exceeding simple "gluing." It penetrates the microscopic texture of the old pavement while firmly interlocking with the new paving material, reconstructing a continuous and holistic load-bearing system.
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2026-03-05