When concrete cracks deformation, due to "crack paste" is greater than the tensile strength of the adhesive strength of the substrate, so that the original focus of stress, after cracking the cover sheet has been posted dispersion, avoid and reduce the cracks in the asphalt concrete possibilities. When the adjacent concrete blocks, repeated up and down within a certain range of the cut, thanks to the reinforcing fibers with people excellent fracture resistance and extensibility. Therefore, difficult to make "crack paste" broken stick "crack paste" blockade has good adhesive properties, corrosion of the surface water off the concrete blocks joints (cracks) inside, make sure the foundation is stable. After several road tests and field survey, cracking posted excellent results crack, crack 2mm thickness of paste, its tensile strength ≥600N / 50mm, product elongation ≥30%. When concrete cracks deformation, due to "crack paste" is greater than the tensile strength of the adhesive strength of the substrate, so that the original focus of stress cracking posted by overburden been dispersed to prevent and reduce the asphalt concrete cracks possibilities. Its excellent low temperature flexibility, good resistance to shear down, when the adjacent concrete blocks, within a certain range and down repeatedly cut, due to the reinforcing fibers with people bending resistance and excellent elongation adopted. Therefore, difficult to make "crack paste" to break, to maintain "crack paste" has a good self-adhesive closure, cut off the surface water erosion cement concrete slab expansion joints (cracks) inside to ensure a solid foundation to reduce the cracks factor. Excellent adhesive properties, puncture resistance and water tightness, effectively prevent surface water infiltration into the cement concrete slab cracks, improved solid foundation. Especially when subjected to horizontal thrust driving the vehicle, due to its self-adhesive covering layer and has good flexibility, to ensure that the water tightness. Greatly improved waterproof, anti-surface water infiltration and India produce concrete slab cracks and improve the solid foundation. Self-adhesive stickers crack a technical characteristics, excellent effect 2mm thickness crack "crack paste", its tensile strength ≥600N / 50mm, product elongation ≥30%. When the two concrete blocks horizontal displacement 1mm (base slit width 4mm), can play a good crack paste mitigation and dispersion. After opening the closed 10,000 times, "crack posted" no damage. 2, has excellent low temperature flexibility, good resistance to shear properties and down due to "crack paste" base soft, flexible at low temperatures of -20 ℃, along ф20mm glass rod. 1800 material bend without breaking. When attached to the two concrete plates "crack stick" up and down displacement 0.5mm (base slit width 4mm), after repeated 10,000 times up and down displacement, due to "crack paste" has good flexibility and elongation, "crack posted "No damage (value up and down displacement of conventional design allows generally not more than 0.06mm). 3, good adhesion properties "crack paste" with cement concrete base and asphalt concrete surface layer also has good adhesion, bond strength greater than 4N / mm, after rolling through the hot asphalt concrete, large adhesive properties margin improved, so when the horizontal force, not easy to slip and damage. At 50 ℃ high temperature conditions, "crack paste" shear strength up 0.15Map more. 4, anti-perforation good "crack paste" by the 500g weight, height from 500mm under the impact, then after 0.5h of 0.3MPa water pressure constant, "crack paste" impermeable. 5, good water tightness due to "crack paste" self-adhesive covering layer under the surface is greater than 1mm, after the hot asphalt concrete 蹍 pressure, fully integrated with cement concrete, substantial increase in the water tightness and prevent infiltration of surface water into the cement concrete slab cracks and improve the stability of the foundation. Especially when subjected to horizontal thrust driving the vehicle, due to its self-adhesive covering layer and has good flexibility, to ensure that the water tightness. 6, to facilitate the construction "crack paste" construction method for the construction of self-adhesive cold. As long as the removal of release paper (film), can be directly pasted on the treated cement concrete base. Construction convenient, fast. At the same time does not pollute the environment, is environmentally friendly products.