Method for sport ground coating forming

FIELD: building, particularly forming coating on sport ground and similar structures.

SUBSTANCE: method involves securing vertical rods in load-bearing layer, arranging zigzag heating wires connected with power source on load-bearing layer; connecting heating wires to vertical rods and applying coating material on load-bearing layer. Coating material is concrete of the following composition (% by weight): low-molecular oligodiene - 8-11; sulfur - 3-6.5; thiuram - 0.3-0.7; zinc oxide - 1.5 - 5.0; calcium oxide - 0.3-0.6; ash from heat power plant - 7-10; remainder - quartz sand. Uninsulated heating wire is used as coating layer reinforcement. Rod height corresponds to coating layer thickness. Electric power is supplied from power source for 55-56 min to obtain coating layer temperature of 85-95°C and then for 180-200 min to maintain 115-125° temperature thereof. Rate of temperature change may not exceed 1°C per minute.

EFFECT: reduced power inputs along with increased coating strength.

2 tbl, 2 dwg

 

The invention relates to the field of construction and can be used in the paving of areas in sports facilities, livestock and other areas.

A known method of manufacturing a sports field turf. For implementing the method using the following materials: perchlorovinyl resin, oligopyrroles, polyvinyl chloride, porofor, isopropyl alcohol, rubber crumb, mineral, limestone, perlite powder fillers (A.S. USSR №1599458, MKI E 01 7/00, 1990).

Known polymer mixture containing as a binder elastomers (A.S. USSR №1680663, MKI 04 In 26/04, 1991).

A known method of manufacturing coatings playgrounds made of composite materials (A.S. USSR №1634738, MKI E 01 7/08, 1991).

The disadvantages of the described coatings markets is the reduction of their strength after alternating irradiation and sprinkling (aging) on 12-16%, low compressive strength, and no further heating of the coating areas, which reduces their operational properties.

Closest to the claimed method is complete ground cover, including fixing to the support layer vertical pins, pinning bearing pins of the heating wire with polyethylene or polyvinylchloride (PVC) insulation, zigzag ulog is the R on the host layer, the subsequent application of the coating layer (figure 14, page 38 in the book. "Recommendations for electrical heating of monolithic concrete and reinforced concrete heating wires M, CNIIMF, 1989).

The disadvantages of this process are: the inefficiency of its use for manufacturing sites of composite materials - concrete mixtures, because the wire insulation made of polyethylene and polyvinyl chloride prevents the heat from the heating wire, thereby making it difficult to achieve the temperature structure formation of ground cover (115-125°C); the inability to use insulated wire as reinforcement that reduces the mechanical characteristics of the coating as a whole.

The present invention is the reduction of energy consumption in the manufacture of coating areas of composite materials through the use of non-insulated heating wires, as the inventive material coatings - concrete mixture is an electric insulator, while enhancing the strength of the coating, based on the implementation of these heating wires function of reinforcing elements.

The problem is solved in that in the method of coating performance sites, including fixing to the support layer of the vertical studs, zigzag placement on the host layer of the heating Ave is water, connected to the power source, pinning them to the specified pins, applying a layer of coating, the material of the coating layer used concrete in the following ratio, wt.%:

Low-molecular oligodon 8-11

Sulfur 3-6,5

Thiuram 0,3-0,7

Zinc oxide 1,5-5,0

The calcium oxide 0,3-0,6

Ash TPP 7-10

Quartz sand the rest,

as a reinforcing element is applied coating uninsulated wire, vertical pins correspond to the thickness of the coating layer, the supply of electric power from the power source originally produced for 55-65 minutes, ensuring the temperature of the material of the coating layer 85-95°S, then for 180-200 minutes with maintaining the temperature of the coating material 115-125°and the speed of set temperature transient is not more than 1°in a minute.

The advantage of the proposed method in comparison with the prototype is the ability to perform ground cover concrete by structure formation of the concrete mixture by introducing thermal energy from the heat of the reinforcing wires without external insulation that reduces energy consumption and provides high adhesion reinforcing element and concrete.

This collaboration reinforcement and concrete increases strength ground cover in tension and is killed.

Figure 1 shows the electrical schematic diagram of a device for implementing the method. Figure 2 presents graphs of the structure-formation process of the concrete.

In the bearing layer 1 is fixed pins 2. On pins 2 fixed zigzag placed on a support layer 1, the heating wire 3, which are covered with the coating layer 4. The temperature adjustment mode is performed through load resistors 5 and resistor 6. As the power source used step-down transformer 7. Temperature control using thermocouple 8, placed in the coating layer.

The method is implemented as follows.

In the bearing layer 1 vertically fix the pins 2. On pins 2 fix zigzag placed on the support layer 1 bare wire 3. Part 3 wires coming out of the coating layer, isolated polymeric material that is resistant to high temperatures. After that put the coating layer 4, so that the layer completely covers the tops of the pins 1.

Using the heating wires 3 connected with the power source 7, the overall temperature of the coating layer to 90°C. When this occurs, the reduced viscosity (dilution) followed by a darkening of its outer layer, which indicates the beginning of the vulcanization process. While maintaining this temperature there is touch of the structural connection between the chemically active components: alimodian and sulfur. Released during the reaction of volatile compounds are absorbed effective sorbent Cao.

Maintaining a temperature of 90°With though and provides a course of vulcanization, but the transition of the coating material in the state of ebony will take more than 100 hours. So after 55-65 minutes to maintain a specified temperature regime the intensity of the pattern formation can be increased by raising the temperature of the coating material to 115-125°C, the speed of the set temperature should not be more than 1°With in minutes a Smooth temperature rise is carried out in order to avoid blistering of the coating material due to the large gas release, which leads to the decrease in the density and strength of the material. For the same reasons is not permissible temperature rise over 125°C.

The described process is presented in figure 2, where "a" is a mode in which the vulcanization process requires to ensure maximum strength of more than 100 hours, the range "B" is a mode where the normal course of the vulcanization process, the level "C" is the temperature above which the vulcanization process is accompanied by the destruction of the material of the coating layer.

The temperature of the mixture 115-125°for 180-200 minutes leads to a gradual change in material properties of the coating layer,depending on the amount of sulfur attached.

1st stage (linked sulfur with about 5%) - the material has the properties of a soft rubber.

2nd stage (linked sulfur with about 9-10%) - the material becomes hard, leather imitation.

3rd stage (linked sulfur 35-50%) - material turns into a solid ebony with a set of physico-mechanical properties that enable its use as a structural material.

An example of the material of the coating layer to implement the described method is:

Low-molecular oligodon 8-11%

Sulfur 3-6,5%

Thiuram 0,3-0,7%

Zinc oxide 1,5-5,0%

The calcium oxide to 0.3-0.6%

Ash TPP 7-10%

Quartz sand the Rest.

From this mixture was formulalist fragments venues flat coatings 150×150×10 mm and prism 40×40×160 mm. In fragments of the sites were fixed steel wire with a diameter of 1 mm with a step of 1 cm (figure 1). In molds for the manufacture of prisms was also built in steel wire with a diameter of 1 mm with a step of 1 see Part made of prisms samples were subjected to heat treatment by connecting to a power source according to the scheme presented in figure 1. The other part is made of the control prisms samples were heat treated for 6 hours in a muffle furnace. The temperature of the mixture samples with heating up were recorded using a thermocouple, and oven - thermometer. The strength of the prisms in compression and bending the definition is served by the existing method.

The test results of samples obtained by vulcanization of the concrete mixtures are presented in tables 1 and 2.

Table 1

The results of tests of samples of the coating material at different temperatures (vulcanization time 6 hours)
 

σ, MPa
90100110115120125130
Electric heatingσ SG, MPa*273842515142
σ projectors, MPa*152027313126
Muffle furnaceσ SG, MPa*263640505042
σ projectors, MPa*131825292925
* lack of structure formation

Table 2

The result of the testing samples of the coating materials at different heat treatment times with a temperature of 115-125°
 

σ, MPa
306090120150180200210
Electric heatingσ SG, MPa**223638515151
σ projectors, MPa**182427313131
Muffle furnaceσ SG, MPa**213436505151
σ projectors, MPa**162126293030
* lack of structure formation

Thus, the inventive method of coating performance platform provides reception reinforced coatings required strength, it is possible their subsequent warming-up for use in the cold season or for quick removal of moisture by precipitation.

Method of making coated with the I pad, including fixing to the support layer vertical pins, placing on the host layer zigzag heating wires connected to the power source, the fixing heater wires to these pins and the application of the coating layer, characterized in that the material of the coating layer used concrete in the following ratio, wt.%:

Low-molecular oligodon 8 - 11

Sulfur 3 - 6,5

Thiuram 0,3 - 0,7

Zinc oxide 1,5 - 5,0

The calcium oxide 0,3 - 0,6

Ash TPP 7 - 10

Quartz sand the Rest

and as a reinforcing element covering the pad used bare heating wire, and the height of the vertical pins corresponds to the thickness of the coating layer, the supply of electric power from the power source originally produced for 55-65 min with achieving temperature of the coating layer 85-95°S, then for 180-200 min maintaining the temperature of the coating layer 115-125°C, and the rate of temperature change during transition processes should not be more than 1°in a minute.



 

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