EPDM Type Field Construction Program
Table of Contents
This article outlines the comprehensive EPDM field construction process, detailing performance characteristics, quality standards, foundation requirements, material ratios, and specific installation procedures.
Performance characteristics
- It is suitable for all kinds of schools and kindergartens at all levels, track and field runway, semi-circular area, auxiliary area, national fitness path, indoor gym training track, playground road pavement, indoor and outdoor runway.
- It can be paved on asphalt concrete foundation and cement concrete foundation.
Foundation acceptance
- The foundation of plastic sports ground can be divided into asphalt concrete foundation and cement concrete foundation.
- Asphalt concrete foundation should be dense, solid, level, rough surface, no cracks, no crushing marks.
- Cement concrete foundation is flat, hard, rough surface, no sand return phenomenon, no fracture and fine joints; there can be no floating cement powder on the surface, and the cement concrete grade reaches the concrete C-25 test standard.
- The measurement of flatness, with a three-meter ruler at any point in the base plane measurement without more than 3mm of depression, or with a 1-meter ruler measurement without more than 1mm of depression is qualified.
Site-specific operations
Pre-construction preparation
- After the construction team enters the site, first of all, count the varieties and quantities of all materials, make a list, and submit it to the supervisor for signature.
- Check the mixer, push the material truck and other machinery and equipment is running normally, found problems in time to repair. Prepare the tools for construction, debug the machine\’s and its thickness according to the thickness required by the construction drawings. Sampling inspection of materials on site, each batch number to do a test piece of test piece. Discover the material deterioration, discoloration should stop using. If there is precipitation, make it uniform.
- According to the project situation, reasonably divide the construction plate, measure the position of the construction line, and put the construction line.
- Batching personnel should carefully count the varieties and models of raw materials, to confirm that the same materials required with the construction site, in order to pile up the materials on the discharge rack, neatly arranged, barrel mouth down spare.
Construction process requirements
Construction classification there are two construction processes, mechanical paving and hand paving.
- Surface pretreatment: in line with the requirements of the foundation, to first clean the surface, there can not exist any stolen goods, dust, water (including watermarks), oil stains and so on. After cleaning on the basis of uniformly coated single-component glue to enhance its bonding capacity with the ground to avoid irreparable consequences.
- Construction must be done before the small sample test attention to the following issues
(a) The use of materials, such as the ratio of materials and whether the curing time of materials is normal.
(b) After 24 hours, observe whether there is no solid phenomenon and whether the performance of adhesion and strength meets the requirements. - Pre-work preparation (manual)
Materials, tools and equipment (clappers, rollers, soap and water, carts, rakes, mixers, etc.), auxiliary materials and catalyst preparation. - Construction crew requirements (manual)
The minimum number of runway construction personnel at the bid site shall be six: two for material preparation, two for material transportation, and two for paving. - Construction (manual)
After mixing the material in proportion, pour it into the site and spread it out, pat it down with a heated (blowtorch-heated) or soap-and-water-soaked clapperboard, patting the seams and keeping the whole flat. - Site thickness requirements
Generally divided into two construction, to 13mm for example: general bottom layer of 8mm white particles and surface layer of 5mm EPDM particles. - Construction precautions (handmade)
(a) the best construction temperature of 5-35 ℃, the temperature is too high or low, affecting the construction.
(b) the use of paving tools (commonly known as trowel or push knife). (c) the mixing of the material must be fully uniform.
(d) each batch of material should be articulated, otherwise there will be joints if the articulation is not good.
(e)trimming must be neat.
(f)must be strictly in accordance with the proportion of ingredients. Depending on the particles, good with less glue, poor with more glue; large dosage less, small dosage more. Bottom black particles: single-component glue = 8:1; surface EPDM particles: single-component glue = 5:1, catalysts generally do not need to be added, such as ambient temperatures below 10 ℃, it can be added appropriately 2-5 ‰.
(g) After the site is ready, check and clean up the residue left on the site to make the whole site beautiful.
Measurement and spraying of process lines
- By the Ministry of Technology, professional and technical personnel to measure the site, the use of the latitude and longitude, steel tape measure, etc. are required to be tested by the national testing department to test the qualification before use, accurate calculation of the temperature change, ruler change to ensure the accuracy of the measurement of the position of the marking line from the end of the line of the distance between the length of the negative difference is not allowed to occur, the positive difference is set to be less than 1/10000.
- The hardness standard is Shore A45-60.
- The transverse slope is not greater than 1/100 and the longitudinal slope is not greater than 1/1000.
- Will be measured accurately marked points with a big pin to mark, the distance between each point is not more than 1 meter. Tape the line to be scribed on both sides of the sticky, and then use the brush to evenly scribe the paint on the surface, should ensure that the color of the process line brushed uniform, saturated, consistent thickness, the process line without false edges, no jagged phenomenon.
Illustrative construction program
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EPDM Type Field Construction Program
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