Airport Runway Slab Rapid Repair and Quick Pouring Solution for Runway Slab Breaks

Cracks in pavement slabs occur because cement concrete roads possess a certain brittleness. Under the influence of temperature and humidity changes, the concrete is prone to severe hardening and subsequent deformation. The cementation of various materials in the cement concrete pavement structure due to interactions may also cause minor cracks to some extent. Under continuous external environmental influences, these can lead to the emergence of macroscopic cracks. Initial slab cracks are often caused by poor material quality, unreasonable construction techniques, and improper material ratios. Cracks that appear during operation are mainly due to unreasonable design, aircraft takeoffs and landings, and uneven settlement of the subgrade.

(2) Pavement slab breakage: Influenced by temperature changes and excessive loads, cracks may continue to worsen, leading to severe damage. When there are three or more slabs affected, breakage issues in cement concrete pavement arise. The cement concrete surface layer is subject to certain constraints during use. When temperatures drop too rapidly or the environmental temperature is too low, internal stress develops within the structure. Once this exceeds the tensile strength of the concrete structure, the surface layer cracks. When temperatures rise, cement concrete expands rapidly, and thermal stress exceeds the ultimate stress, ultimately causing pavement fracture. Under repeated low or high-temperature conditions, if appropriate repair measures are not taken, severe breakage issues will occur. Additionally, under sustained heavy loads, when the internal stress in the cement concrete pavement structure exceeds the ultimate stress, the pavement will develop severe fatigue cracks. Polymer rapid repair material, made from M resin as the base material with the addition of appropriate fibers, high-strength aggregates, and various additives, is specifically designed for airport pavement repair. This material is suitable for various airport pavements, including broken slabs, edge spalling, corner breaks, slab fractures, localized damage, bridge expansion joints, and concrete or asphalt pavements requiring rapid reopening to traffic. The material features no shrinkage, freeze-thaw resistance, extremely high flexural strength, rapid curing in 20-60 minutes, convenient construction, durability, weather resistance, and appearance, embodying many advantages of pavement repair materials. One repair offers permanent benefits, and it can rapidly cure even in extreme winter conditions as low as -50°C, significantly reducing site closure time and making non-stop construction possible in harsh winter temperatures. It can be applied in temperatures ranging from -50°C to 40°C, allowing for year-round construction;

2. Simple construction, no curing required, traffic can resume within 20-60 minutes after application;

3. Excellent adhesion to all substrates, including concrete, asphalt, and hollow core slabs;

4. Long-lasting color retention, no aging, with wear resistance, chemical resistance, and durability;

5. Superior compressive strength, flexural strength, and corrosion resistance;

6. Excellent watertightness and outstanding waterproof performance;

7. Dense resin structure, strong adhesion, and resistance to detachment;

8. High skid resistance and impact resistance.