Product introduction:
Anti-crack stickers (also known as anti-crack stickers) are made of asphalt-based macromolecular polymers, high-strength tensile tire bases, and high-strength fabrics that are resistant to high temperatures and are compatible with asphalt. Attaching it to the cracked or peeling asphalt concrete surface can reduce and block the thermal contraction stress acting on the pavement, thus reducing the tendency of cracks to reflect through the surface layer. The layers are isolated, so that the upper layers are protected from multi-directional displacement and shear stress, and are used in highways, bridges, airports, etc.
Main performance:
1. Isolation. Lay anti-crack stickers 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, and the tensile stress of the cracks in the base layer cannot be directly transferred to the asphalt concrete surface layer, although the base layer and the surface layer are reduced. The bonding force between the two, but the high polymer anti-crack sticker can make the upper and lower layers well adhered into a whole, and bear the load of the vehicle together, which 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 withstand a certain tensile stress of the crack. When the tensile stress of the crack increases and is greater than the tensile strength of the anti-crack sticker, the anti-crack sticker begins to deform, and the surface layer begins to bear the transmission of the anti-crack sticker. up tensile stress. The anti-crack sticker layer will bear all the tensile stress of the crack. Obviously, the anti-crack sticker acts as a reinforcement. In this sense, it improves the tensile strength of the pavement structural layer.
3. Energy dissipation and buffering effect. The anti-crack sticker is a material with certain extensibility. The polymer has good low temperature flexibility. When it is laid between the asphalt pavement layers, it is equivalent to setting an elastic layer. A wider range, thereby reducing the stress intensity at the crack, and the elastic interlayer can absorb part of the tensile energy.
4. Waterproof and anti-seepage effect. The anti-crack sticker polymer can form a complete waterproof and anti-seepage layer, which can cut off the leakage of road water to the roadbed, thereby protecting the strength of the base layer and preventing further deterioration of the material properties of the base layer. The anti-crack sticker is used in the asphalt pavement layer to slow down the upward transmission of cracks, and play the anti-crack and energy-absorbing functions of the anti-crack sticker in practical engineering.
