Road sealant has high tensile strength, good toughness and surface viscosity, and is suitable for pavement base (including cement-stabilized crushed stone, cement concrete and other semi-rigid or rigid structures); it can prevent damage caused by temperature effects and vertical loads. Due to the high viscosity material on the surface of the base lamination seam, it can be directly bonded to the clean base surface, because the horizontal or vertical stress at the base crack is relatively concentrated, the width of the base lamination seam is generally more than 150mm , the length should be determined according to the seam length.

　　When an elastic layer is provided, the tensile stress of the crack in the base layer can be extended to a wider range through the anti-crack adhesive polymer, thereby alleviating the stress intensity at the crack, and the elastic interlayer can absorb part of the tensile energy. effect. For road sections with pockmarked surface, serious looseness, cracks, large protrusions or depressions on the surface of the base, corresponding treatment must be carried out to ensure that the base has sufficient flatness and strength. The road sealant has excellent waterproof effect. Due to its good low temperature flexibility and strong adhesion, it forms a permanent seamless adhesive layer after being pasted and compacted, so that rainwater cannot enter the cracks in the base layer.