The asphalt cold patching materials produced by endless incomplete processes are difficult to select, and the good cold patching materials can make the repair effect twice the result with half the effort. When we get the asphalt cold patching material, we can quickly identify several methods of good cold patching material. Jinan asphalt personnel will answer for you!
1. Color: dark and shiny
Generally, 70 # or 90 # petroleum asphalt is used as the cold patching asphalt to prepare the mother liquor. Therefore, the cold patching materials we get are black, shiny and shiny.
2. Suitable looseness
The degree of looseness is appropriate, without looseness and agglomeration.
Asphalt cold patching material can be stored and constructed at room temperature for a long time, and also has good cohesiveness. Therefore, no matter how many months we put it, when we open the cold patching material package, on the one hand, the material should be free of obvious agglomeration, and can be easily mixed and operated with a shovel, with good workability; On the other hand, the aggregates should not be too loose. The aggregates should adhere to each other. After grasping and loosening, the aggregates will be separated slowly. If you look carefully, you can see the occurrence of wire drawing.
3. No stone leakage, no oil flashing
The cold patching material produced by the special equipment has a proper oil stone ratio. Therefore, on the one hand, there will be no exposure of the stone material, and on the other hand, the paper towel wrapped with the supercooled patching material will have a stone particle outline mark on the paper towel, and there will be no oil immersion in the block.
4. Blister does not fall off
The cold patching material has good water resistance. The water peeling resistance (covering area) of the mixture tested by the water boiling method or the water immersion method shall not be less than 95%. The conventional operation can be carried out by immersing small pieces of compacted material into the pure water at room temperature for 24 hours, without looseness and collapse.
5. The thickness and fineness of aggregate are appropriate
The coarse and fine aggregate shall be properly matched, and the materials with no fine aggregate or the proportion of fine aggregate exceeding 80% shall be rejected. The final strength of cold patching material shall be equal to or even better than that of hot mixed asphalt mixture, and graded stone shall be selected.
In the process of pavement repair, although the construction speed is fast and the technical requirements for equipment and personnel are not high, the effect after repair is comparable to that of hot mixed asphalt mixture in terms of color, stability and service life of the pavement after repair. Follow us and understand http://www.ycgjglcl.com more!