2. Basic treatment (1) Polishing and repairing the ground that does not meet the conditions (2) Cleaning site
3, put the line to determine the four straight boundaries, in the straight section of the playing field line, the line should be a bright color is appropriate, with the straight line as the benchmark, the first line inside the first release, then from the inside out Release each construction line.
4. Runway Polishing The runway (bottom up) is naturally paved on the ground and polished using a sander.
Role: To enhance the adhesion of the runway and the base surface to make it more secure.
Precautions:
During the grinding process, the grinding machine must move forward at a constant speed and must not damage the surface of the runway.
5, shop primer with professional back cover glue (Group A and B ratio of 1:4, 2% of the catalyst, plus a small amount of rubber powder) for spreading, starting from the starting area, running along the runway direction coating.
effect:
(1) Prevention of bottom seepage (2) Foundation leveling (3) The professional backing glue has good adhesion with the bottom layer and upper layer rubber sheet, so as to ensure the adhesion effect of the track.
6. Runway Bonding (1) After the construction of the paving glueboard construction marking line is completed, a straight vertical dividing line is taken as the benchmark. The runway starts from the inner edge and is aligned along the drawn construction marking line. The runway is placed in turn and horizontally. The indenter should be 200 millimeters. It is advisable to align the longitudinal runway and place it for 30-60 minutes depending on the temperature.
The effect is:
1 rubber surface layer to restore the original state of the material and adapt to the weather;
2 Lay the rubber surface in the corresponding position (Plane 1 is laid on Runway 1 and Surface 2 is laid on Runway 2);
3 quality inspection (cutting damaged and uneven);
4 Cut and tidy up all interfaces.
(2) After the adhesive coated runway is laid, before the bonding, the runway shall be rolled up from both ends respectively, and the rubber shall be scraped on the ground from the rolled center of the runway in one direction. The amount of adhesive should be moderate when the surface is squeegeeed, and should be controlled between 0.7 and 1 Kg/m2 per square meter. The squeegee should be evenly coated, and the viscosity of the adhesive should be well controlled and laid in the optimum time.
(3) Bonding the runway When bonding with the ground, the operation of the runway should be carefully laid, and the side edges of the runway should be aligned with the ground construction markings. The first side of the runway is rolled up and bonded. After bonding, the other side is bonded, and the inner side of the runway is bonded first.
All other laying processes are basically the same as laying.
In the process of bonding on both sides of the runway, the air remaining at the bottom of the runway should be squeezed cleanly. In order to ensure that the side edges are firmly bonded, the runway and the side of the runway should be fixed with special tools. The adhesive interface on the side is pressed until the glue cures. Half of the squares were filled with glue half filled with air. When the athletes compete in the above, air and raw rubber are compressed to store energy and avoid earthquakes. When the soles of the feet leave the surface, natural rubber and air are sent back to the athletes with the extension.
The laying of the curve is basically the same as the straight laying process, but it must be more careful during the operation.
(4) After the surface pressing runway is bonded to the ground, in order to ensure firm adhesion between the runway and the ground, in order to prevent the runway from curling up, the edges of the bonded runway are pressed with heavy objects. Red bricks, big slabs of bricks, one by one, pressure stabilized, runway and end of runway interface using heavy-duty method, using the method of blanking, but need to use four layers of red bricks, three rows of flat bricks along the center to each side Until the glue cures to ensure the quality of the paving.
During the process of handling bends, the pressure on the runway is significantly enhanced. The heavy objects at the edges of the runway are doubled than those on the straight runway, and a layer of red brick is pressed in the middle of the runway surface to ensure the runway is sticky. The effect of the connection.
(5) When splicing the end face of the port, the end of the track should be pressed with a steel ruler on the end of the track and trimmed. When the upper pressure runway and the lower pressure runway are adhered at the port, the shrinkage at low temperature should be taken into account, so that there is a margin between the upper pressure plate and the lower pressure plate, and the adhesive-bonded two ports should be coated with adhesive in order to achieve a better bonding effect.
7. After the adhesive tape of the cleaning site is completely glued and the adhesive is completely cured, clean the site, check the interface of the runway port, and repair the area where the interface is not strong or smooth to prepare for the next process.
8. After the repair and cleaning of the line drawing site, draw line work. Drawing lines are carefully crafted. In addition to ensuring the accuracy of measuring instruments, equipment, and tools, construction workers should have a strong sense of responsibility and work hard. The measurement accuracy is one ten-thousandth, and the selected steel ruler should fully consider the ruler length verification and modification. After the point line is released, three-person proofreading should be carried out and the proofreading should be followed by spraying. The spray box should be one for each lane to ensure the uniformity of the track arc. During the spraying process, pay attention to the spray box cleaning in a timely manner to avoid spray paint dripping on the surface of the runway to ensure that the runway surface is beautiful and tidy.
9. Clean up the site After completing all the above procedures, clean up the site and keep it clean.
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