Construction process, method and process steps of Nanjing Dazun Road marking line

The construction process, method and process steps of Nanjing Dazun Road marking line project, contact person: Mr. Wu Tel: 18951744567



Da Zun hot-melt Nanjing road marking construction process:

1. Site preparation 2. Safety measures 3. Cleaning the road surface 4. Stakeout 5. Priming 6. Spreading (glass beads) 7. Curing 8. Trimming 9. Self-test

Da Zun hot-melt Nanjing road marking process steps:

1. Site preparation.

After arriving at the construction site, we must first understand the road traffic situation, arrange the scribing work without affecting the traffic as much as possible, make local planning for traffic guidance, and adopt perfect and eye-catching traffic safety measures. Protect the section that needs to be marked to clean the road surface.



2. Safety measures.

First of all, we must consider the width of the road, traffic and other factors, and fully use the safety facilities such as signs, traffic cones and roads. Construction workers should wear yellow or white bright-colored overalls and wear yellow or white reflective work caps. Equipped with traffic controllers to manage pedestrians and traffic, to prevent accidents. The traffic manager must be a responsible and skilled person, wear armbands, carry sirens, red flags, etc., pay special attention to pedestrians to avoid scalding accidents.



3. Clean the road surface.

The road markings of Nanjing roads must not have dust, sand, or water. Thoroughly cleaning the road surface is an important condition to ensure that the paint is firmly bonded to the road surface. One of the important operations of hot-melt coatings in construction is to clean the road surface. When cleaning, it can be completely removed by broom, plate brush and gas burner according to different conditions. If you re-mark the old line, check the old line bonding. If there are peeling, loose branches and cracks in the old line, you should take it seriously before you can re-dash.



4, stake out.

(1) First of all, traffic management should be done to ensure the safety of the stakeout operation. Then, the position of the marking line is measured. According to the position and figure indicated on the design drawing, the measuring tools and white powder are marked on the road surface. (2) According to the structure of the road and the traffic conditions, generally, the center point of the road is first measured, and then the center line determined by the interval of 10-20 m is set, and the center point is set every 5-15 cm along the curve radius in the curved section. (3) In the longitudinal direction of the road, the length of 50m is used as the correction unit. When it is confirmed that the set center point connecting line matches the curve radius, the road center line template is drawn by connecting each center point. In this way, the front center is checked in order, and while the center line is continuously extended, it is also necessary to continuously check the position of the center line that has been set. (4) According to the position of the center line of the road, mark the width of half of the scribe line (for example, when the reticle is 15 cm wide and half of the center line is 7.5 cm) and draw the outline of the reticle width for spraying. When a curved section with a small radius of curvature, the road line design and construction must be confirmed, and the alignment with the road alignment should be obtained. (5) Lane dividing line, the edge is measured according to the center line, and the general line also needs to mark the line width. Pedestrian crossing lines, diversion marking lines, writing marks, etc. are based on the construction drawing design principle. However, when considering the special conditions of the road and the intermediate position of the entry and exit, it is necessary to redesign the lofting position according to the actual situation of the road. (6) Stakeout of the old line re-draw. When the road marking has been worn and needs to be re-sprayed, if the position of the marking is not changed, the paint remaining on the marking line should not be re-staked. However, when the old marking position does not meet the road surface, the measurement correction must be repeated. Therefore, it must be investigated before the pavement marking is staked out.



5, the primer (under the paint)

(1) Normally master the amount of brush applied to the primer. Too much or insufficient will reduce the adhesion between the road surface and the coating film. According to the road condition and the characteristics of the primer, it can be controlled at 65-230g per m2. Brush evenly on the road with a brush. The width of the primer should be slightly wider than the width of the marking line. The primer should be maintained after brushing. When the primer does not stick to the tire, does not stick to dust, and the sand indicates that the primer is dry, it can be applied by marking. (3) Maintenance time should be different according to atmospheric temperature, road surface temperature, humidity, primer composition, brushing amount and road surface water absorption. Care should be taken when applying the primer to prevent omissions, especially where the bumps on the road surface are obvious, and the thickness can be appropriately applied in the recessed area.



6. Melting of the material.

The melting kettle is placed on the vehicle, and a gas burner and a stirring device equipped with CP gas (liquefied petroleum gas) as a fuel are used in the melting tank, and the materials are heated and stirred until they are melted to make them meet the required coating materials. The melting of the coating has an effect on the operation of bonding and finishing, and should be given enough attention. Pay special attention to the following points: (1) The temperature should be strictly controlled to avoid long-time high-temperature heating to prevent thermal deterioration of paint discoloration. (2) Adjust the heat and stirring speed according to the requirements of the amount of paint and viscosity. When the amount of application is small, use a small fire. The transfer distance of molten paint should not be too long. (3) When the first pot is melted (for example, one pot early), pay special attention to temperature control and pay attention to safety. (A) Stir and mix thoroughly to make the coating uniform. For coatings with a specified viscosity, when adding new materials, pay attention to the deepening of the newly added materials. (B) Pay attention to the number of times of heating, and heat each pot of material as much as possible. Before the end of the day's work, you should discuss with the responsible person the amount of molten material that needs to be melted, and try not to leave the remaining paint too much for the next day. (C) The paint contains a lot of air, which will suddenly cause boiling accidents. Do not stack flammable materials around the melting pot.



7, coating (spreading glass beads)

(1) Coating operation is a key step in the construction of marking lines and should be strictly controlled according to the operating procedures. In order to prevent the viscosity of the storage tank and the outlet of the line from becoming thicker, a heating and heat preservation device should be provided on the scribing surface (vehicle), and the temperature should be properly controlled according to the coating amount and surrounding climate factors. (2) Warming the molten coating to 180-200? At °C (the appropriate type of temperature is used according to the type and formula of the tree type used in the molten material), the coating is melted and flowed, and the working surface is applied to the road surface. Spread glass beads and cure at room temperature. When applied to an asphalt pavement, the coating fuses with the pavement. When applied to a cement concrete pavement, the physical bond between the paint and the road surface is mechanically engaged. (3) The net powdery coating is melted in the hot melt kettle, and after the specified temperature is reached, the melted paint is placed in the heat preservation (heating) barrel of the marking machine, and then the painter is lost (the vehicle) to coat the paint. On the road. (4) The application procedure of the application line is as follows:

(A) The construction machinery should be inspected before application to ensure that the equipment is in good condition. Pre-painting with oil felt or tin sheet in advance, check the color, thickness, width, amount of glass beads, etc., and adjust the parameters if necessary. (B) The application of the village line should be carried out after the primer solvent is dried. Before the primer is dried, the marking line is drawn, and the solvent will penetrate the unhardened coating film to cause air bubbles. (C) At the same time as the marking is applied, the glass beads are to be spread, and half of the diameter of the glass beads is buried in the coating film, and the reflection effect is good. But it is not easy to do this. The coating temperature is high, the glass beads are spread quickly, the glass beads will penetrate into the coating, the coating temperature is low, the glass is spread slowly, the coating is nearly solidified, the glass beads can not be well fixed on the coating, easy to fall off, and the reflection effect is poor. . (D) During the construction, strict attention should be paid to the effects of coating temperature, spreading speed, wind direction, equipment and equipment on the spread of glass beads, and glass beads should be avoided. Spreading should be uniform and comprehensive. Usually, the amount of spreading is 15cm wide. When drawing 100cm, spread 20-30g. Excessive glass beads are scattered, which makes the daytime color tone worse, and produces unevenness. It also tends to make the dust adhere to the surface and reduce the recognition.



8. The marking line is solidified.

The drying of the coating film is allowed to cool naturally from the viewpoint of adhesion and finishing. For example, when it is subjected to rapid cooling, it should be slightly awaited after coating and sprinkled with water. However, sprinkling water on the film that has not been hardened may cause the internal deformation of the marking line to favor the peeling of the surface, and the occurrence of pitting on the surface of the coating, which makes the dressing difficult, and should not adopt the rapid cooling method. When the temperature is low in winter, the road center preheating measures should be taken during construction to prevent the viscosity from rapidly thickening after the paint contacts the road surface. So as to affect the adhesion of the paint to the road surface.



9. Da Zun Hot Melt Nanjing Road Marking Trimming and Inspection

(1) After the end of the painting marking line, the workload should be measured according to the actual completion situation, the non-conforming markings should be trimmed, the spilled and drooping paint should be removed, and the thickness, size, glass beads spreading and twisting should be checked. Shape, etc. It is necessary to trim the irregular markings, collect scattered glass beads, remove construction residues, and organize mechanical equipment and tools. (2) Marking line coatings shall comply with the provisions of the Ministry of Standards “Pavement Marking Paint” (JT/T280). The color and shape of the marking line shall comply with the provisions and design requirements of the current national standard "Road Traffic Signs and Markings" (GB5768). The measured items and data shall comply with the values ​​specified in the (JTJ071-98) standard.



Nanjing Dazun Traffic Engineering Co., Ltd. is a professional company specializing in the construction of various Nanjing road traffic marking lines and Nanjing epoxy floor construction. Our Nanjing epoxy floor construction, Nanjing road marking, Nanjing road marking, Nanjing traffic marking, Nanjing traffic marking, Nanjing parking lot marking, Nanjing highway marking, Nanjing factory parking lot, Nanjing factory road marking Line, Nanjing school parking lot, Nanjing school road marking, Nanjing hospital parking lot, Nanjing hospital road marking, Nanjing living community parking lot, Nanjing living community road marking, Nanjing commercial area parking lot, Nanjing commercial area road marking, Nanjing property management community parking lot and other constructions have a good specialization. Contact: Mr. Wu Tel. 18951744567
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