Patch The Expressway In A Rainy Day !

Cold Patch Materials
Cold asphalt mixture is a kind of mixture formed by mixing unheated mineral (aggregate) with diluted asphalt !

Product Characteristics

Characteristics of cold repair asphalt mixture

1. Suitable for any weather and environment asphalt cold repair material suitable for a wide ambient temperature range, can be used between -20℃ and 50℃ !

2. The construction of simple use of asphalt cold repair material, repair without sticky layer oil. Materials can be used with the take, do not need heavy construction machinery, according to the different repair conditions of the road roller compaction, impact compaction, artificial compaction !

3. Excellent quality asphalt cold repair material has strong anti-aging and bonding properties. The repaired pit is not easy to fall off, crack and other bad phenomena, do not need to repeat repair !

4. Easy to save asphalt cold repair material can be stored in the open air for more than two years at room temperature, bag sealed finished products can be stored longer !

5. The production of simple asphalt cold repair material production process is simple, can directly use the traditional hot asphalt mixing equipment in the local production !

6. Facilitate traffic with asphalt cold repair area without closed traffic, can be immediately opened to traffic, can greatly ease the traffic pressure caused by road repair construction !

7. The production and use of green asphalt cold repair materials will not produce dust and black smoke, and the finished product is insoluble in water. Therefore, it will not pollute the atmosphere and groundwater, and is conducive to environmental protection !

8. Widely used asphalt cold repair materials and asphalt concrete, cement concrete, metal surface, wood surface and other different matrix materials have good bonding force, can be widely used in a variety of pavement repair and maintenance !

9. Low repair cost The use of asphalt cold fill construction, not subject to the weather and the size and quantity of the pit, repair in time, can avoid the expansion of the pit, save repair materials, and repair without heating or stirring, according to the actual amount of use at any time, the remaining materials can continue to be used in the next repair, will not cause material waste, truly 100% Utilization !

Working Principle :

Forming mechanism of cold mending asphalt mixture The strength formation process of cold mending asphalt material is different from that of hot asphalt mixture. The asphalt used in hot asphalt mixture is thermoplastic, while the asphalt used in cold mending asphalt mixture is modified and has not been completely thermoplastic. The strength of the cold repair mixture has a slow process, and it has plasticity and fluidity during spreading and rolling, and can be squeezed to irregular places in the pit. Under the action of driving and air, part of the solvent is volatilized, the asphalt gradually thickens, the distribution between the particles of the cold fill mixture is more tight, the porosity is reduced, and the mutual bonding of mineral materials is more firm. The density of the mixture increases, and the feeling of the soft surface will gradually disappear, which takes 7-10 days. After that, the strength will gradually increase, and after about three months, its deformation and strength will gradually stabilize, reaching or exceeding the performance of the hot asphalt mixture after cooling. The strength of the cold repair mixture is composed of two parts: one is the cohesiveness and adhesion of the mixture formed by the modified asphalt itself and the interaction with the mineral material. They make it difficult to separate the mineral particles and form a whole, and also make the mixture and the original surface have a high adhesive force and are not easy to peel off and push. The second is the internal friction resistance of the mixture formed by the interlocking action between the mineral particles after rolling. The two components of cold feeding constitute its initial strength and are sufficient to resist the action of vehicle Load !