Qixiu Anti-Cracking Patch QX-50-100

The High-Polymer Composite Anti-Cracking Patch is a self-adhesive, tape-shaped interlayer anti-cracking and waterproof material, which is compounded from high-strength, high-temperature and acid-alkali resistant glass fiber fabrics, asphalt-based high polymer polymers and base courses.

Integrating the anti-cracking and crack-resistant materials such as geosynthetics, fiber synthetic materials and stress absorption layers that are independently used in current highway engineering, the High-Polymer Composite Anti-Cracking Patch is an upgraded optimized product of interlayer anti-cracking and waterproof materials for highway engineering.

On the basis of absorbing advanced experience of similar foreign materials, the High-Polymer Composite Anti-Cracking Patch is an independently developed domestic high-strength anti-cracking material, leveraging Qixiu’s over ten years of experience in pavement material sales, cooperative R&D and application. It is mainly applied to the conversion of cement concrete pavements to asphalt pavements (white-to-black pavement reconstruction). Given that its core raw materials are similar to those of joint tapes, it can also be used for sealing, waterproofing and repairing road surface cracks. With successful application cases on multiple domestic highways, it demonstrates excellent anti-cracking and waterproof performance.

1. Anti-Cracking Performance of Anti-Cracking Patch & Crack Prevention Patch & Crack Repair Patch

The high-strength glass fiber fabric on the surface of Qixiu Anti-Cracking Patch boasts high tensile strength. It can effectively resist the tensile stress at interlayer cracks, restrict the expansion of crack width, and play the role of reinforcement and crack resistance.

2. Performance of Anti-Cracking Patch & Crack Prevention Patch & Crack Repair Patch

When paved on the surface of interlayer cracks, Qixiu High-Polymer Composite Anti-Cracking Patch forms a complete water-proof and seepage-proof layer. It can block the infiltration path of rain and snow water, thereby reducing water damage to the pavement.

3. Energy Dissipation Performance of Anti-Cracking Patch & Crack Prevention Patch & Crack Repair Patch

The high polymer in Qixiu Anti-Cracking Patch is a viscoelastic material with good low-temperature flexibility. Paved under the asphalt pavement layer, it acts as a viscoelastic interlayer. The tensile stress at cracks is dispersed to a wider range through the polymer layer in the anti-cracking patch, achieving the effect of absorbing tensile energy.

4. Self-Adhesive Performance of Anti-Cracking Patch & Crack Prevention Patch & Crack Repair Patch

The material has self-adhesive properties and exhibits excellent bonding performance after the release film is peeled off. After being compacted stably with a road roller or small-sized compaction equipment, it bonds more firmly to the pavement without displacement, and can meet the construction requirements for paving the upper asphalt mixture.

According to changes in ambient temperature, the high polymer in Qixiu Anti-Cracking Patch adopts three formulations: normal temperature, low temperature and high temperature, ensuring the bonding performance between the material and the pavement in different ambient temperature seasons.

1. For Crack and Expansion Joint Treatment in Cement Pavement “White-to-Black” Conversion or Overlay Projects

It serves as a stress buffer, energy absorber, sealer and waterproofing layer, preventing reflective cracking on the overlay and mitigating the impact of seasonal width variations of expansion joints (slab joints) in concrete slabs on the surface course.

The anti-cracking patch is installed on the top surface of the base course or cement concrete slabs.

2. For Interlayer Joint and Related Crack Treatment

3. For Pavement Crack Treatment

In scenarios with limited maintenance budgets and low requirements for aesthetic finish, the anti-cracking patch (also known as crack prevention patch & crack repair patch) can replace joint tape for crack treatment on expressways, national highways, provincial highways and municipal roads.

The anti-cracking patch is applied to the surface of asphalt concrete pavements.

1. Thickness of Qixiu Anti-Cracking Patch (Crack Prevention Patch & Crack Repair Patch)

Common specifications are 1.5mm and 2.0mm. Materials with a specification of >2.0mm can be produced according to engineering requirements.

2. Width of Qixiu Anti-Cracking Patch (Crack Prevention Patch & Crack Repair Patch)

Four common specifications are available: 25cm, 33cm, 50cm and 100cm. Other specifications can be customized or cut on-site as needed.

3. Length of Qixiu Anti-Cracking Patch (Crack Prevention Patch & Crack Repair Patch)

Length per roll: 20m.

1. Qixiu Anti-Cracking Patch & Crack Prevention Patch & Crack Repair Patch: High Strength & Low Elongation

2. Anti-Cracking Patch & Crack Prevention Patch & Crack Repair Patch: Excellent High-Temperature Resistance of Fabric

The measured high-temperature resistance of the fabric in Qixiu High-Polymer Composite Anti-Cracking Patch reaches 270℃.

According to the Technical Specifications for Construction of Highway Asphalt Pavements (JTG F40-2004) issued by the Ministry of Transport, under the conditions that the surface temperature of the underlying layer is 10~15℃ and the paving thickness is less than 5cm, the on-site paving temperatures of ordinary asphalt mixture and modified asphalt mixture are 145℃ and 165℃ respectively. When the overlay layer is modified asphalt mixture, the surface fabric of polypropylene-high polymer composite interlayer anti-cracking patch has already undergone thermal deformation, and the surface fabric of non-woven fabric-high polymer composite interlayer anti-cracking patch is close to the state of thermal deformation. In contrast, the surface fabric of Qixiu High-Polymer Composite Anti-Cracking Patch can effectively resist thermal deformation caused by various existing mixtures and different paving temperatures.