Construction of the Hot Melt Reflective Markings in Gaoming Hecheng

Answer 1

The construction process of the hot melt reflective marking is as follows:
1. ** Pre-construction preparation **
- According to the road width, traffic volume and other factors, make full use of safety facilities such as signs and road railings, and allocate traffic wardens to manage pedestrians and traffic to prevent accidents as much as possible. The construction workers and managers wore reflective vests.
- Considering the preparation of the paint, the hot melt kettle was generally loaded on the car. The hot melt kettle was equipped with a gas burner and a stirring device that used natural gas as fuel (the hot melt kettle fueled by liquefied gasoline gas could achieve automatic temperature control). The material was heated and stirred until it melted into a paint that met the requirements. During the melting process of the material, the temperature must be strictly controlled to avoid long-term high-temperature heating to prevent the paint from changing color. The heat and rotation speed must be adjusted according to the coating amount and the requirements of the coating thickness.(Use a small fire when the amount of coating is small); the transportation distance of the molten paint should not be too long; it should be fully stirred and mixed to make the paint uniform; supply the paint with the specified thickness; pay attention to the melting of the newly added materials when replenishing new materials; pay attention to the number of times of heating (try to only heat each pot of materials once, and try not to make too much paint at the end of the day); pay attention to the large amount of air in the paint to prevent accidents caused by sudden boiling; do not place flammable items around the hot melt kettle.
- In order to improve the bond between the pavement and the paint, a primer must be applied on the pavement. The primer is composed of synthetic resin, plasticizer, and aromatic fluids. Different types should be selected according to different pavement materials. At the same time, the road must be cleaned because the dust, sand, and moisture on the road were the main factors that hindered the paint from sticking.
- Use measuring tools and chalk to make marks on the road according to the positions and patterns indicated on the design drawings.
2. ** Construction process **
- After the paint was melted, it was kept at a constant temperature between 180 and 220 degrees before being applied. Using glass bead base paint and oil tree base hot melt paint, apply the paint base paint at the marked position, wait for the base paint to dry, then carry out hot melt marking, and at the same time, scatter reflective glass beads to make it glow at night to improve the safety of the road. The thickness of the marking line is required to be 1.5 - 1.8MM, and use a hot melt marking machine (by scraping the melted 200° C high temperature powder hot melt paint on the road) and a hot melt kettle to carry out construction.

Hot melt reflective markings are suitable for lane boundaries, edge lines, and guide lines where wheels roll more; crosswalks, intersections, parking lots, and roads without lighting at night; asphalt pavements have good traction, followed by cement pavements; It is also suitable for road markings in broad areas, factory parking lots, underground parking lots, school road markings, living quarters, etc., but it is not suitable for sand pavements, brick pavements, temporary pavements, and pavements that will be expanded within half a year.
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