In the construction of highway road markings, we often encounter some problems of one kind or another. Let’s discuss some common problems and solutions of hot melt coating in construction:

First, the problem of discoloration of hot melt coating

1. During the melting process, the temperature is too high or the bottom of the hot melt kettle is burnt. The solution is to strictly control the temperature and clean the bottom of the hot melt kettle before operation.
2. The quality of the product itself is unqualified, and it is likely that the hot melt coating has deteriorated. Bulk products should be tested in a professional testing department before construction, and they can be constructed and used only after they are qualified.

Second, the problem of poor reflection at night

1. During the construction, the glass beads are blown away when the wind is strong; the spreader shakes and tilts and other reasons cause the uneven distribution of the glass beads on the surface. The solution is to install a windshield on the glass wave spreader and make preparations for the coating operation, and master the construction forward speed.
2. During construction, the road surface is uneven. The construction technology and adaptability should be improved, and experienced technicians should be allowed to carry out the operation and construction.

Third, the crack problem

1. In winter construction, hot melt coating shrinks in cold and produces internal stress. When this kind of stress is concentrated in one place, it is easy to produce cracks. First, choose a suitable construction season and try to avoid marking construction in cold winter. At the same time, pay attention to the reasonable use of hot melt coating, and choose the suitable hot melt coating ratio in different seasons.
2. Reflection cracks caused by roadbed cracks.

Cracks caused by the expansion or contraction of hot melt coating, or cracks caused by uneven sinking, etc., cause cracks in the road markings. In general, it cannot be avoided, and the construction quality of the roadbed can be enhanced.

Road marking is an important part of traffic safety facilities, and it plays an irreplaceable role in modern expressway transportation. The level of construction and the quality of products are all related to the length of the service life of road markings, and directly affect the transportation safety and efficiency of the backbone traffic in a region. Therefore, we must pay attention to the various problems that occur in the construction of road markings. , Through learning and mutual communication, to solve problems, so that our road marking from the quality of hot melt coating to the construction process has a qualitative improvement, to play its biggest role.