The most common early damage to asphalt pavement is cracks and potholes. Pothole repair is one of the important contents of daily maintenance and repair of asphalt pavement. The traditional hot-mix asphalt mixture repair method (hot patching method) is not suitable for scattered or small potholes in practice. It is not only greatly affected by temperature and rainy and snowy weather, but also easily pollutes the natural environment and affects the health of construction workers during construction. In this case, the cold patch asphalt mixture repair method (cold patching method) has been widely used because of its advantages of timely repair, fast construction, energy saving and environmental protection.

Compared with hot-mix asphalt mixture, Huatong cold-patch asphalt mixture in cold-patch process has great advantages in pothole repair:
First, it is not restricted by weather and seasons. Cold-patch materials can be constructed as usual even in rainy and snowy weather;
Second, it has a long storage time. Cold-patch asphalt mixture can be stored in closed bags for more than 2 years;
Third, the construction process is simple. Even if there is a small amount of water in the pothole, it can be directly filled and compacted. There is no need to dry and brush the oil layer. The operation is simple;
Fourth, it saves resources. Cold-patch asphalt mixture can be used as needed, and the remaining materials can be recycled without causing material waste;
Fifth, it is green and environmentally friendly. There is no need to heat stones and asphalt during the mixing process of the mixture. They are mixed at room temperature, which will not cause air pollution and produce greenhouse gases. It is a green and environmentally friendly material;
Sixth, it is fast and convenient. The pothole can be opened to traffic after repair. Repair at any time to keep the road surface new, ensure the smooth flow of roads, reduce the occurrence of traffic accidents, reduce repair costs, and extend the service life of roads.
So, in this market environment with mud and sand, how can we choose high-quality asphalt cold patch materials?
Cold patch asphalt mixture must have a certain initial strength to support the pressure of vehicle load when repairing potholes, which requires the cold patch asphalt mixture to have a suitable grading design;
The most important feature of cold patch asphalt mixture is that it must have a certain looseness and adhesion at room temperature, making the mixture easy to construct, which requires a stable ratio of various additives to meet the needs;
Cold patch asphalt mixture pothole repair requires a certain degree of adhesion, and the mixture in the pothole will not be threshed or loose after repair.