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Mechanism of Anti-cracking Paste

Release time:

2021-02-23 10:28

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mechanism of action of crack paste:

1. Reinforcement effect

The high-strength and high-temperature-resistant fabric on the crack-resistant surface has a large tensile strength, which can effectively resist the tensile stress at the crack between layers, limit the development of the crack width, play a role of reinforcement, and improve the tensile strength of the local structural layer of asphalt pavement.

2. Energy dissipation buffer

The polymer in the anti-cracking paste is a material with certain viscoelasticity and good low-temperature flexibility. It is laid on the asphalt pavement layer, which is equivalent to setting up a composite layer with good viscoelasticity under certain low-temperature conditions. The tensile stress at the crack is gradually attenuated to a wider range through the expansion of the good viscoelastic composite layer, which can play a role in absorbing tensile energy.

3. Anti-seepage function

The anti-cracking paste is laid on the surface of the cracks between layers to form a complete water-proof anti-seepage layer, which can cut off the water seepage path of rain and snow, thereby reducing the water damage of the road surface.

4. Self-adhesive performance

The product has self-adhesive, the construction is very convenient, remove the isolation film directly bonded to the crack parts, the use of small compaction equipment after stabilization, and the road bond more firmly, no passage, to meet the upper asphalt mixture paving construction requirements.

The anti-cracking paste is pasted on the asphalt concrete surface with cracks or peeling, which can reduce and block the temperature shrinkage stress acting on the pavement, thus also reducing the tendency of crack reflection passing through the surface layer. The paving and pavement are used for highways, bridges and airports because they isolate the base layer from the upper wearing layer, so that the upper layer is free from the influence of multi-directional displacement and shear stress.

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