Today, based on the actual research of asphalt manufacturers in Jinan and discussions with construction units such as municipal and high-speed maintenance, the usage methods of asphalt cold patching materials have been summarized, hoping to provide you with some help.
1. When using asphalt cold patching materials, the treatment of pits and grooves should first determine the excavation position of the pits and grooves. After milling around (according to the thickness of the road surface, the depth is generally not less than 3 centimeters) or cutting the joints, the crushed stones and waste residue in and around the pits and grooves to be repaired should be cleaned up. There should be no sewage, mud, ice blocks or other debris in the pits and grooves to be repaired, and the edges of the repaired pits and grooves should be neatly cut. The removal of waste residue should be done until a solid solid surface is visible.
2. When using asphalt cold patching material to fill the pit, it is recommended to apply adhesive layer oil around and at the bottom of the cleaned pit, especially evenly around the pit (based on actual construction experience, adhesive layer oil has a good auxiliary effect on the combination of new and old road surfaces).
3. Fill sufficient asphalt cold patching material into the pit and groove. The asphalt cold patching material should be first spread around the groove wall, from edge to center. Until the filling material is about 1.5 centimeters above the ground, the center of the pit should be slightly higher than the surrounding road surface and curved after filling. If the depth of damage to road grooves is more than 5 centimeters, the filling work should be done in layers of every 3 centimeters, and compacted layer by layer.
4. After the compaction of the asphalt cold patching material is completed, a layer of stone powder or fine sand can be evenly spread on the surface as needed, and a cleaning tool can be used to sweep back and forth to fill the surface gaps with fine sand. After that, traffic can be opened up.
The above is an introduction to the use of asphalt cold patching materials, hoping to be helpful to you. For more related matters, come to our website http://www.ycgjglcl.com Let's consult!