The total thickness of the plastic runway is 13mm, which is divided into 10 9mm for the bottom layer

It is purely the construction unit under the premise of 13mm standard through years of experience to obtain the most economical and practical structure. At present, there is no written basis and mandatory standard, you can use all the surface material for 13mm, but this is a lot more expensive, and it has no practical meaning, hehe.

Professional plastic runway construction units know and can ask.

The thickness of the plastic runway refers to the total vertical distance between the surface of the synthetic material and its bottom surface, which directly affects the elasticity of the site, and is closely related to the safety protection performance and sports performance of the site.

Impact absorption is the core index of the current international standard to measure the motion performance and cushioning protection performance of the ground layer of synthetic material sports field, and there are corresponding provisions in the IAAF, FIFA, FIBA and European standards. The national standards GB T 14833-2011 and GB T have also been determined for the impact absorption of synthetic runway surfaces, requiring the impact absorption value to be 35% to 50%.

When the average thickness of the surface layer of the synthetic material sports field is 13 mm, the impact absorption value in this standard is set to 35% 50% with reference to the "Standard Manual for Athletics Field Facilities" (International Association of Athletics Federations), the EU standard EN 14877-2013 "Technical Requirements for Outdoor Synthetic Materials Sports Venues", GB T 14833-2011, GB T and GB 30228-2012, the impact absorption value in this standard is set to 35% 50%, which is consistent with the provisions of the above standard.

The test data of the impact absorption value of the synthetic dust layer with different thicknesses is attached.

According to national regulations, the thickness of the plastic rubber runway should not be less than 13mm of Xiaozhibi. This is determined by the length of the running shoe spikes and the performance of the track. The length of the spikes in the spike running shoes is 9 mm, so there is a rule that the power performance of the track can be used without piercing the runway.

It should be a minimum of 13mm, and it is necessary to consider wear resistance, elasticity, and service life.

If required, the average thickness of the flat withered is more than 14mm.

The solid thickness of the rubber surface is from the center of the rubber bottom to the surface of the rubber particles, which is controlled from two aspects. The thickness and size are pre-checked through the vertical mold, and the local high place of the base layer is repaired or hammered to be tamped down. If the height is not much, you can use the flat scraper to add a fixture off the mold scraper to ensure the thickness, the 11th Asian Games in the northern suburbs of the competition field plastic runway main competition area to ensure the thickness, the error control is positive, so the average thickness is more than 14mm.

To prevent local blistering and shelling after the rubber surface is paved, the compactness of the base layer should be strictly controlled to prevent the asphalt foundation layer from being incalculated and squeezed out of the asphalt itself, and from shelling and delamination, resulting in poor adhesion, surface gasification, and the rubber surface being pulled off. Where the density of the base layer is not enough, it can be reinforced by drilling with a drill bit and filling rubber (rubber nails).

Thickness requirements:

1. The thickness of the plastic surface layer should be consistent and the elasticity should be uniform, and the quality requirements for the foundation are as follows:

Flatness: The pass rate of flatness is more than 95%, and the error of 3m ruler is 3mm.

2. According to the thickness requirements of the material after layering:

Cement concrete foundation C20 thickness 15 cm;

20 cm of Panax notoginseng ash soil, 15 cm of gravel stabilization layer;

asphalt concrete foundation 7-10 cm;

inorganic material stabilization layer 15 cm;

(Please see the upper left corner)**Plastic runway materials, dozens of yuan per square meter can be constructed, nationwide package transportation and laying, fifteen years are available. Plastic runway construction process:

1. Clear the garbage in the site, carry out basic testing and make records in the above way, clean up the stagnant water, dry it, and blow the dust in the site with a hair dryer; Clean up the batching and mixing site, and keep the glue around the batching site clean.

2. Use a wire brush to brush the mud spots and white ash spots in the site.

3. Use a hammer or drill to dispose of the white ash, cement and protrusions that cannot be brushed off, and then blow the whole site.

4. Take a small amount of glue, configure it in proportion, and conduct a field test. After the experiment, the next process is carried out according to the results of the experiment.

5. The foundation is back covered, the waterlogged part is leveled with materials, and the unqualified compactness is sealed with glue.

6. Adjust the paver ruler as needed, and then carry out paving construction, and the thickness of each place should meet the design requirements.

7. After the base layer is paved and hardened, release water to find the water accumulation point, and level the water accumulation place according to the above process, until there is no water accumulation in the bottom glue. After the primer is completely hardened, the surface is polished with a grinding machine to meet the requirements of smoothness, and then the surface is non-slip sprayed.

8. According to the drawings and design requirements, mark various line positions in the site.

Construction requirements: 1. Seams: The joints are smooth and beautiful. The trimming personnel check the thickness and flatness at any time.

2. Ingredients: Strictly implement the process formula issued by the company's technical department, and the ratio is accurate.

4. Trimming: The edge part is trimmed by the designated technician. When connecting the hard edge, it should be adjusted according to the slope, and when connecting the soft and hard edge, the hard edge should be cleaned and polished to ensure the firmness of the bonding.

5. Base surface treatment.

1) Moisture removal.

The moisture content of concrete should be less than 5%, otherwise it should be removed before painting. There are several ways to remove moisture:

Ventilation: Strengthen air circulation, accelerate air flow, take away moisture, and promote further volatilization of moisture in concrete.

Heating: Raise the temperature of the cement concrete and its surrounding air, accelerate the rate of water migration to the surface layer in the cement concrete, and make it evaporate rapidly. Forced air heating and radiant heating should be used.

2) For the alkali return ground with a pH value greater than 8, treat it with pickling

Pickling method (suitable for the ground with more oil stains): clean the surface of cement concrete with hydrochloric acid with a mass fraction of 10 15%, and then rinse with clean water after the reaction is complete, and brush with a brush, this method can remove the mud layer and obtain a finer roughness.

3) For the large area of the site with poor flatness or too smooth foundation surface, mechanical methods are adopted: use sandblasting or electric grinder to remove surface protrusions, loosen particles, destroy capillaries, increase the adhesion area, and use a vacuum cleaner to suck out sand particles, impurities and dust. For the ground with more depressions and potholes, plastic and fine rubber particles should be configured into glue or putty to fill and repair.

Summary. The reduction of the thickness of the plastic runway will have a certain impact on its strength. The main manifestations are:

1.Reduced elasticity. The elasticity of a runway depends mainly on its own material thickness and properties.

Reduced thickness leads to reduced elasticity and poor running and cushioning. 2.Reduced carrying capacity.

The load-bearing capacity of a runway is closely related to the thickness and strength of its material. Decreasing thickness will lead to an increase in the stress distributed within the material, exceeding the material strength limit, resulting in permanent deformation or damage, and a decrease in bearing capacity.

The original design thickness of the plastic runway is 1o mm, and the actual construction is 6 mm, does the strength affect it?

Hello dear I am a life expert Qi Ze I am happy to answer this question for you: "The original design thickness of the plastic runway is 1o mm, and the actual construction is 6 mm. ”

The reduction of the runway thickness by more than 20% will seriously affect its performance, and it is not recommended to change the design parameters without authorization during the construction process. If the thickness cannot meet the design requirements, it should be confirmed with the designer or product supplier to evaluate the impact and solution of the land hall. Unauthorized changes may affect the quality and performance of the project, and lead to increased maintenance costs and user complaints.

The reduction of the thickness of the plastic runway will have a certain impact on its strength. The main manifestations are:1

Reduced elasticity. The elasticity of the runway mainly depends on its own material hunger, material thickness and performance. Reduced thickness leads to reduced elasticity and poor running and cushioning.

2.Reduced carrying capacity. The load-bearing capacity of a runway is closely related to the thickness and strength of its material.

The decrease in thickness will lead to the increase of the stress circle distributed in the material, exceeding the strength limit of the material, resulting in permanent deformation or damage, and the decrease of the load-bearing capacity.

3.Shortened service life. The durability of runway materials is directly proportional to their thickness and strength.

Decreasing thickness accelerates material aging and wear, and the service life is correspondingly shortened. 4.The safety factor becomes smaller.

When designing the thickness of the runway, the full margin of a tong will be considered. The reduction of the actual construction thickness will make the safety factor smaller, and it is easy to have potential safety hazards or accidental damage.

In summary, the thickness of the plastic running liquid road is reduced by 4 mm, from 10 mm to 6 mm, which will have a great impact on its strength and performance: 1) the elasticity and cushioning will be significantly reduced, and the running feeling will become worse; 2) The bearing capacity will be reduced, and it is easy to be deformed or damaged; 3) The service life will be shortened by 30-50%; 4) The safety factor will become smaller, the safety will decrease, and it will be more prone to accidental damage.

The area of the runway = 100 * (80-60) + 40 -30 ) = 2000 + 700 = 4198 square meters.

The area of the plastic runway = 100 (80-60) + [80 2) -60 2)].

4198 (m).

Requires cubic meters of soil.

Plastic cubic meters are required.

sqm) 716 (sqm) 2 indicates squared.

The area of the outer circle minus the area of the inner circle.