Accelerating the setting of cold asphalt patch material is mainly achieved by selecting quick-setting products, optimizing construction techniques, and controlling environmental conditions. Specific methods include using quick-setting formulas, thorough compaction, vehicle rolling, and adjusting ambient temperature.

Selecting Quick-Setting Cold Patch Material: Some manufacturers achieve 90% strength within 12 hours by changing the curing mode (e.g., "vibratory compaction curing") or adding quick-setting components, enabling immediate traffic access. When purchasing, ensure the product is labeled "quick-setting" and follow the manufacturer's instructions.
Optimizing Construction Techniques:
1. Thorough Compaction: Immediately after paving, use a roller, vibratory tamper, or tire compactor to repeatedly roll the material at least three times to break up the asphalt film and accelerate solvent evaporation. The compaction degree for ordinary roads should be ≥93%, and for highways ≥95%.
2. Accelerated Vehicle Rolling: After construction, allow vehicle traffic to promote material density and solvent evaporation through rolling, but control vehicle speed and weight to avoid damage. 3. Layered Filling and Interface Treatment: For pits deeper than 5cm, compact each layer in 3-5cm layers; apply emulsified asphalt to the damp substrate to enhance adhesion and prevent loosening.
Environmental Control and Auxiliary Measures:
1. Increase Ambient Temperature: Apply at 5-30℃. At low temperatures, preheat the substrate with heating equipment, but avoid high temperatures that could cause premature drying of the material.
2. Additives: Add preservatives (such as glutenin) or alkaline substances (such as sodium hydroxide) according to the instructions, adjusting the pH to 8-9 to accelerate the chemical reaction.
3. Baking and Curing: Bake the compacted repair area with a liquefied gas torch or infrared heating plate to promote rapid solvent evaporation.