The anti crack sticker is made by asphalt It is composed of high molecular polymer, high tensile tire base, high temperature resistant and asphalt compatible high fabric. Sticking it on the asphalt concrete surface with cracks or flakes can reduce and block the temperature shrinkage stress on the pavement,
Therefore, the tendency of crack reflection passing through the surface course is also reduced. Because the pavement separates the base course from the upper wearing course, the upper course is protected from multi-directional displacement and shear stress, and is used for roads, bridges, airports, etc.
main performance
1. Isolation. The anti crack sticker is laid to isolate the cracked surface layer from the asphalt surface layer, avoiding the direct contact between the cracked surface layer and the asphalt surface layer. The tensile stress of the base crack can not be directly transferred to the asphalt concrete surface layer. Although the bonding force between the base layer and the surface layer is reduced, the polymer anti crack sticker can make the upper and lower layers cohere well and bear the vehicle load together,
It is enough to prevent the relative displacement of the upper and lower layers of the interface and maintain continuity.
2. Reinforcement effect. The anti crack sticker has a certain strength and can bear a certain tensile stress of cracks. When the tensile stress of cracks increases and is greater than the tensile strength of the anti crack sticker, the anti crack sticker begins to deform, and then the surface layer begins to bear the tensile stress transmitted by the anti crack sticker. The crack resistant bonding layer will bear all the tensile stress of the crack. Obviously, the crack resistant bonding layer plays the role of reinforcement. In this sense,
It improves the tensile strength of the pavement structure layer.
3. Energy dissipation and buffering effect. Anti crack sticker is a kind of material with certain extensibility. The polymer has good low temperature flexibility. It is paved between asphalt pavement layers, which is equivalent to setting an elastic layer. The tensile stress of the base crack extends to a wider range through the anti crack sticker polymer, so as to alleviate the stress strength at the crack. The elastic layer can play the role of absorbing part of the tensile energy.
4. Water resisting and anti-seepage function. The anti crack paste polymer can form a complete waterproof and anti-seepage layer, which can block the water seepage from the pavement to the subgrade, so as to protect the strength of the base course and prevent the properties of the base course materials from further deterioration. The anti crack sticker used in the asphalt pavement layer can effectively ease the upward transmission of cracks, and play the anti crack role and energy absorption role of the anti crack sticker in the actual project.
