Construction method for anti-radon engineering

A construction method and engineering technology, applied to floors, coverings/linings, buildings, etc., to achieve the effects of improving project quality, simplifying leveling, and reducing energy consumption

Active Publication Date: 2018-08-17

四川聚安惠科技有限公司

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AI-Extracted Technical Summary

Problems solved by technology

[0006] In view of this, the present invention provides a radon prevention project construction method for the problem that the c...

Method used

Step 3, hot-melt powder is electrostatically sprayed on the metal sheet; Electrostatic spray coating thickness is controlled at 100 μ m, can make adhesion layer and metal plate better maintain tightness;

Step 3, hot-melt powder is electrostatically sprayed on the sheet metal; Electrostatic spraying coating thickness is controlled at 65 μ m, can make adhesion layer and metal plate better maintain tightness;

Step 3, hot-melt powder is electrostatically sprayed onto the metal sheet; Electrostatic spraying coating thickness is controlled at 30 μ m, can make adhesion layer and metal plate better maintain tightness;

Step b, aluminum tripolyphosphate being weighed in high-efficiency kettle, talcum powder, fumed silica, rare earth, KT-560 silane coupling agent carry out mechanical grinding and pulverization and reach thick 5nm, the sheet layer of wide 6nm Structural state, then mixing and stirring nm-level polyimide can directly insert the sheet to make it peel off. At this time, the sheet is dispersed into the polyimide matrix at the nm level, which greatly enhances the interface area between organic and inorganic. And form a strong chemical bond, so that the comprehensive performance of the composite material is greatly improved, and the powder is prepared;

Step b, aluminum tripolyphosphate being weighed in high-efficiency kettle, talcum powder, fumed silica, rare earth, KT-560 silane coupling agent carry out mechanical grinding and pulverize and reach thick 5nm, the sheet layer of wide 6nm Structural state, then mixing and stirring nm-level polyimide can directly insert the sheet to make it ...

Abstract

The invention discloses a construction method for anti-radon engineering. The method comprises the following steps that an anchor bolt is arranged on a cavity wall or a wall surface, or a metal framework is firstly arranged on the cavity wall or the wall surface, then an anchor bolt is arranged on the metal framework, a buckle bracket is arranged on the anchor bolt, then the buckle bracket is fixed on the anchor bolt with a nut, and coated plates are fixed on the buckle bracket in a clamping connection mode; and the coated plates are sealed by using adhesive bonding. The construction method for anti-radon engineering has the advantages that the independent installation cannot be affected by rough cavity wall or wall, many attached sundries, humidity and the like, the construction procedurelinks such as leveling, polishing, dedusting and the like for the cavity wall or wall are simplified, the pollution to the environment by the procedures is avoided, the construction efficiency is improved, the labor hours are reduced, the energy consumption is reduced, the engineering quality is improved, when the wall is cracked caused by external force, the independent buckle connection on thecavity wall or outside the wall can only have an impact on fixing the buckle and cannot affect an external anti-radon protective layer.

Application Domain

Covering/liningsFlooring

Technology Topic

Cavity wallEnergy consumption +7

Image

Examples

Experimental program(3)

Example Embodiment

[0058] Example 1

[0059] A construction method for radon prevention project includes the following steps:

[0060] Anchor bolt 1 on the wall or wall, install the buckle bracket 3 on the anchor bolt 1, then use the nut 7 to fix the buckle bracket 3 on the anchor bolt 1, and fix the coating plate 4 to the buckle in a snap-fit manner Above the bracket 3; the coating plates 4 are glued and sealed with glue 5. The bottom of the coating plate 4 is provided with a groove 8, and the side of the coating plate 4 is provided with a positioning notch 2 corresponding to the buckle bracket 3, and the buckle bracket 3 is arranged in the groove 8. Inside, the coated plate 4 is clamped on the buckle bracket 3 through the positioning notch 2 and the groove 8. The coating plate 4 is bonded and sealed with glue 5 at the positioning dent 2.

[0061] Wherein, the coated board 4 is prepared by the following method:

[0062] Step 1. Weigh the following components according to mass percentage: 63% polyimide, 15% aluminum tripolyphosphate, 5% talc, 2% fumed silica, 11% rare earth, KT-560 silane coupling agent 4 %, the above mass percentage content is 100%;

[0063] Step 2. In the high-efficiency kettle, use nm intercalation composite technology to synthesize the weighed components into hot-melt powder; the specific method is to weigh the weighed aluminum tripolyphosphate, talc powder, fumed silica, rare earth, KT-560 silane coupling agent is mechanically ground and pulverized to a layer structure with a thickness of 5nm and a width of 6nm. Then, the nm-level polyimide can be mixed and stirred to be directly inserted into the sheet to peel off, and the sheet is dispersed at the nm-level In the polyimide matrix, the interface area between organic and inorganic is greatly enhanced, and strong chemical bonds are formed, so that the overall performance of the composite material is greatly improved, and hot-melt powder is prepared;

[0064] Step 3. The hot-melt powder is electrostatically sprayed on the metal sheet; the thickness of the electrostatic spray coating is controlled at 65μm, which can make the adhesion layer and the metal sheet better maintain the tightness;

[0065] Step 4. Put the powdered metal sheet in a heat curing furnace for high-temperature curing at 325°C to form an isolation film on the metal surface. The side of the isolation film is provided with positioning dents 2 and the bottom is provided with grooves 8 to prepare The green and environmentally friendly high-efficiency radon blocking material is obtained, which is the coated plate 4.

[0066] The glue 5 is prepared by the following method:

[0067] Step A, prepare powder:

[0068] Step a. Weighing: Weigh the following components according to mass percentage: polyimide 63%, aluminum tripolyphosphate 15%, talc powder 5%, fumed silica 2%, rare earth 11%, KT-560 silane couple Coupling agent 4%, the above mass percentage content is 100%;

[0069] Step b. The weighed aluminum tripolyphosphate, talc powder, fumed silica, rare earth, and KT-560 silane coupling agent are mechanically ground and crushed in a high-efficiency kettle to reach a sheet structure with a thickness of 5nm and a width of 6nm. Then, the nanometer-level polyimide is mixed and stirred to be directly inserted into the sheet to peel off. At this time, the sheet is dispersed into the polyimide matrix at the nanometer level, which greatly enhances the interface area between organic and inorganic and forms a strong The chemical bond of the composite material is greatly improved, and the powder is prepared;

[0070] Step B. Preparation of component A: weigh the powder, dimethylformamide (DMF) and epoxy resin according to the mass ratio of 3:3:4, and combine the weighed powder and dimethylformamide (DMF) Mixed with epoxy resin to prepare component A;

[0071] Step C: Weigh component A and component B with a mass ratio of 100:45; fuse the weighed component A and component B to prepare a green and environmentally friendly high-efficiency radon blocking material, which is glue 5.

Example Embodiment

[0072] Example 2

[0073] A construction method for radon prevention project includes the following steps:

[0074] Fix the metal frame 6 on the wall or wall of the cave, then lay the anchor bolt 1 on the metal frame 6, install the buckle bracket 3 on the anchor bolt 1, and then use the nut 7 to fix the buckle bracket 3 on the anchor bolt 1. The layer plate 4 is fixed on the buckle bracket 3 in a clamping manner; the coating plate 4 is bonded and sealed with glue 5. The bottom of the coating plate 4 is provided with a groove 8, and the side of the coating plate 4 is provided with a positioning notch 2 corresponding to the buckle bracket 3, and the buckle bracket 3 is arranged in the groove 8. Inside, the coated plate 4 is clamped on the buckle bracket 3 through the positioning notch 2 and the groove 8. The coating plate 4 is bonded and sealed with glue 5 at the positioning dent 2.

[0075] Wherein, the coated board 4 is prepared by the following method:

[0076] Step 1. Weigh the following components according to mass percentage: polyimide 60%, aluminum tripolyphosphate 18%, talc 3%, fumed silica 3%, rare earth 10%, KT-560 silane coupling agent 6 %, the above mass percentage content is 100%;

[0077] Step 2. In the high-efficiency kettle, use nm intercalation composite technology to synthesize the weighed components into hot-melt powder; the specific method is to weigh the weighed aluminum tripolyphosphate, talc powder, fumed silica, rare earth, KT-560 silane coupling agent is mechanically ground and pulverized to a layer structure with a thickness of 5nm and a width of 6nm. Then, the nm-level polyimide can be mixed and stirred to be directly inserted into the sheet to peel off, and the sheet is dispersed at the nm-level In the polyimide matrix, the interface area between organic and inorganic is greatly enhanced, and strong chemical bonds are formed, so that the overall performance of the composite material is greatly improved, and hot-melt powder is prepared;

[0078] Step 3. The hot-melt powder is electrostatically sprayed onto the thin metal plate; the thickness of the electrostatic spray coating is controlled to 30μm, which can make the adhesion layer and the metal plate better maintain the tightness;

[0079] Step 4. Put the powdered metal sheet in a heat curing furnace for high-temperature curing to form an isolation film on the metal surface to prepare a green and environmentally friendly high-efficiency radon-resisting material, which is the coated sheet 4 and the side of the coated sheet 4 There are positioning dents 2 on the top, and grooves 8 on the bottom.

[0080] The glue 5 is prepared by the following method:

[0081] Step A, prepare powder:

[0082] Step a. Weighing: Weigh the following components according to mass percentage: polyimide 60%, aluminum tripolyphosphate 18%, talc 3%, fumed silica 3%, rare earth 10%, KT-560 silane couple Coupling agent 6%, the above mass percentage content is 100%;

[0083] Step b. The weighed aluminum tripolyphosphate, talc powder, fumed silica, rare earth, and KT-560 silane coupling agent are mechanically ground and crushed in a high-efficiency kettle to reach a sheet structure with a thickness of 5nm and a width of 6nm. Then, the nanometer-level polyimide is mixed and stirred to be directly inserted into the sheet to peel off. At this time, the sheet is dispersed into the polyimide matrix at the nanometer level, which greatly enhances the interface area between organic and inorganic and forms a strong The chemical bond of the composite material is greatly improved, and the powder is prepared;

[0084] Step B. Preparation of component A: weigh the powder, dimethylformamide (DMF) and epoxy resin according to the mass ratio of 3:3:4, and combine the weighed powder and dimethylformamide (DMF) Mixed with epoxy resin to prepare component A;

[0085] Step C: Weigh component A and component B with a mass ratio of 100:40; fuse the weighed component A and component B to prepare a green and environmentally friendly high-efficiency radon blocking material, which is glue 5.

Example Embodiment

[0086] Example 3

[0087] A construction method for radon prevention project includes the following steps:

[0088] Fix the metal frame 6 on the wall or wall of the cave, then lay the anchor bolt 1 on the metal frame 6, install the buckle bracket 3 on the anchor bolt 1, and then use the nut 7 to fix the buckle bracket 3 on the anchor bolt 1. The layer plate 4 is fixed on the buckle bracket 3 in a clamping manner; the coating plate 4 is bonded and sealed with glue 5. The bottom of the coating plate 4 is provided with a groove 8, and the side of the coating plate 4 is provided with a positioning notch 2 corresponding to the buckle bracket 3, and the buckle bracket 3 is arranged in the groove 8. Inside, the coated plate 4 is clamped on the buckle bracket 3 through the positioning notch 2 and the groove 8. The coating plate 4 is bonded and sealed with glue 5 at the positioning dent 2.

[0089] Wherein, the coated board 4 is prepared by the following method:

[0090] Step 1. Weigh the following components according to mass percentage: polyimide 65%, aluminum tripolyphosphate 12%, talc 8%, fumed silica 1%, rare earth 12%, KT-560 silane coupling agent 2 %, the above mass percentage content is 100%;

[0091] Step 2. In the high-efficiency kettle, use nm intercalation composite technology to synthesize the weighed components into hot-melt powder; the specific method is to weigh the weighed aluminum tripolyphosphate, talc powder, fumed silica, rare earth, KT-560 silane coupling agent is mechanically ground and pulverized to a layer structure with a thickness of 5nm and a width of 6nm. Then, the nm-level polyimide can be mixed and stirred to be directly inserted into the sheet to peel off, and the sheet is dispersed at the nm-level In the polyimide matrix, the interface area between organic and inorganic is greatly enhanced, and strong chemical bonds are formed, so that the overall performance of the composite material is greatly improved, and hot-melt powder is prepared;

[0092] Step 3. The hot-melt powder is electrostatically sprayed onto the thin metal plate; the thickness of the electrostatic spray coating is controlled at 100 μm, which can make the adhesion layer and the metal plate better maintain the tightness;

[0093] Step 4. Put the powdered metal sheet in a heat curing furnace for high-temperature curing to form an isolation film on the metal surface to prepare a green and environmentally friendly high-efficiency radon-resisting material, which is the coated sheet 4 and the side of the coated sheet 4 There are positioning dents 2 on the top, and grooves 8 on the bottom.

[0094] The glue 5 is prepared by the following method:

[0095] Step A, prepare powder:

[0096] Step a. Weighing: Weigh the following components according to mass percentage: polyimide 65%, aluminum tripolyphosphate 12%, talc 8%, fumed silica 1%, rare earth 12%, KT-560 silane couple Coupling agent 2%, the above mass percentage content is 100%;

[0097] Step b. The weighed aluminum tripolyphosphate, talc powder, fumed silica, rare earth, and KT-560 silane coupling agent are mechanically ground and crushed in a high-efficiency kettle to reach a sheet structure with a thickness of 5nm and a width of 6nm. Then, the nanometer-level polyimide is mixed and stirred to be directly inserted into the sheet to peel off. At this time, the sheet is dispersed into the polyimide matrix at the nanometer level, which greatly enhances the interface area between organic and inorganic and forms a strong The chemical bond of the composite material is greatly improved, and the powder is prepared;

[0098] Step B. Preparation of component A: weigh the powder, dimethylformamide (DMF) and epoxy resin according to the mass ratio of 3:3:4, and combine the weighed powder and dimethylformamide (DMF) Mixed with epoxy resin to prepare component A;

[0099] Step C: Weigh component A and component B with a mass ratio of 100:50; fuse the weighed component A and component B to prepare a green and environmentally friendly high-efficiency radon blocking material, which is glue 5.

[0100] The technical effects of the present invention will be described below in combination with specific experimental data:

[0101] 1. Determination of radon resistance, radon reduction performance and radon extraction rate:

[0102] 1. Radon resistance efficiency test:

[0103] Make a single-sided radon-filled box with a side length slightly smaller than the side length of the board. A stable radon source is placed inside. The top of the box is provided with an activated carbon box. There are two openings on one side of the box. The opening is installed with a vent pipe and the vent pipe is connected. There is a continuous radon meter to monitor the internal radon concentration. Use the experimental material to seal the opening surface. After the radon precipitation rate is stable, measure the radon precipitation rate J on the surface of the material. The experimental diagram is as follows figure 1.

[0104] According to formula (1), the theoretical calculation value C of the equilibrium radon concentration in the closed space whose volume is V and the surface area is s is obtained max :

[0105] C max =(J*S)/λ V (1)

[0106] Where λ is the decay constant of radon 2.1*10 -6 s -1. If the potential radon concentration in the surrounding medium is C 0 , Then calculate the radon efficiency η of the material by formula (2) Block radon :

[0107] η Block radon =(C 0 -C max )/C 0 (2)

[0108] η Block radon The size of can be used to evaluate the radon blocking effect of the material.

[0109] 2. Test of reducing radon efficiency:

[0110] Use the experimental plate to make a closed cavity with two openings on one side of the cavity for measuring the radon concentration inside the cavity. Place the cavity in a small radon chamber where the radon concentration can be adjusted. The inside of the cavity is connected with a continuous radon meter. After the radon concentration in the small radon chamber and the temperature and humidity are stable, the radon concentration inside the chamber is measured. Continuous measurement, the experimental diagram is as figure 2. When the radon concentration in the cavity is stable, the equilibrium radon concentration C in the cavity can be obtained under certain conditions Measurement , The radon concentration in the radon room is C 0 Under the condition of, the radon reduction efficiency η can be obtained by formula (3):

[0111] η Radon =(C 0 -C Measurement )/C 0 (3)

[0112] Evaluate the radon reduction effect of the cavity made of JDPI-05a anti-radon board, standardized operation to make 1mm thick, JBT-21S anti-radon material, and hand-made 2.7mm~3.5mm thick JBT-21S anti-radon material. JDPI-05a type anti-radon board in 2.25*10 6 (Bq/m 3 ) Tested under the conditions of radon concentration, standardized production of 1mm thick JBT-21S anti-radon material and hand-made JBT-21S type anti-radon material are respectively 1*10 4 (Bq/m 3 ), 2.19*10 6 (Bq/m 3 ) Test under the condition of radon concentration.

[0113] 3. Calculation of diffusion coefficient

[0114] In the known C test, C 0 , The cavity surface area S, the volume V, the material thickness H, and when the solubility coefficient of radon in the material is regarded as 1, the diffusion coefficient D can be obtained by formula (4):

[0115]

[0116] When D/λH 2 When it is large enough, equation (4) can be simplified to equation (5):

[0117]

[0118] Substituting the experimental data can get the diffusion coefficient D of the experimental material.

[0119] Since the JDPI-05a anti-radon sheet is a composite material, the diffusion of radon in the material is not a process of diffusion in a certain medium, so it is meaningless to solve the diffusion coefficient here.

[0120] For the cavity made of the JBT-21S anti-radon material, the spraying of the material in the actual project is completed by a special device, and the process is well guaranteed, so the data obtained by the 1mm thick cavity made under standard operating conditions is used to measure The ability of the material to resist radon. According to formula (5), the diffusion coefficient can be calculated as D=3.83*10 -12 (m 2 /s).

[0121] 4. Test conclusion

[0122] The anti-radon ability of JDPI-05a type green and efficient radon material (Example 1) and JBT-21S type green and efficient radon material (Example 1) were quantitatively evaluated, and the radon under experimental conditions The precipitation rate and the performance of the two test materials in an indoor closed environment of 3m*4m*5m are as follows:

[0123] Table 1 Anti-radon performance of test materials

[0124]

[0125] It can be seen from the results that the test material has excellent radon blocking effect and radon reduction effect under the experimental conditions, which meets the indoor radon reduction requirements.

[0126] 2. JDPI-05a type oxygen and moisture barrier board (Example 1) plus JBT-21S type oxygen proof material (gel) (Example 1) toxicity test:

[0127] testing base:

[0128] 1. The National Military Standard of the People's Republic of China "Regulations for Toxicity Evaluation of Non-metallic Materials for Ships" (GJB 3881-1999);

[0129] 2. The National Military Standard of the People's Republic of China "Testing Methods for 45 Components of Submarine Cabin Air" (GJB 533.1-533.30-88);

[0130] 3. The National Military Standard of the People's Republic of China "Testing Methods for Air Composition in Submarine Cabins" (GJB 533.31~533.35-91);

[0131] 4. The National Military Standard of the People's Republic of China "Allowable Concentration of Air Components in the Compartment of Nuclear Submarine" (GJB 11B-2012);

[0132] 5. The National Occupational Health Standard of the People's Republic of China "Occupational Exposure Limits for Hazardous Factors in the Workplace Chemical Hazardous Factors" (GBZ2.1-2007);

[0133] Sample: base material aluminum plate 0.5mm, front 150μm coated plate (Example 1), back 150μm coated plate (Example 1) plus JBT-21S type radon blocking material (gel) (Example 1) 150μm.

[0134] 1. The results of qualitative analysis of releases at room temperature:

[0135] The samples released at room temperature include: carbon monoxide, carbon dioxide, and total hydrocarbons.

[0136] 2. Qualitative analysis results of high temperature pyrolysis products:

[0137] The high temperature pyrolysis products of the sample at 700~1000℃ are:

[0138] Inorganic substances (2 kinds): carbon monoxide, carbon dioxide;

[0139] Aliphatic hydrocarbons (8 types): pentane, heptane, 2-butene, 1,3-cyclopentadiene, 1,3-cyclohexadiene, 4,7-methylene-1H-octahydroindene , 3-methyltricyclo[5.2.1.0(2.6)]decane, pentacyclo[7.5.0.0(2,7).0(3,5).0(4,8)]14-10,12 -Diene;

[0140] Aromatic light (9 kinds): benzene, toluene, ethylbenzene, styrene, acrylbenzene, allylbenzene, 1-methylvinylbenzene, (1-cyclohexenyl)-1-methylbenzene, 1, 2,3,4,4a9,9a,10-octahydroanthracene;

[0141] Oxygenates (22 species): ethanol, butanol, decanol, 2-methylhexadecanol, 2-methyl-2-propenal, butyraldehyde, hexanal, caprylic aldehyde, benzaldehyde, caproic acid, 2 -Ethylhexanoic acid, 1-isobutyl-4-isopropyl-3-isopropyl-2,2-dimethylsuccinic acid, butyl acetate, 2-caprolactone, phthalic anhydride, Diisobutyl phthalate, dibutyl phthalate, ethyl hexadecanoate, ethyl 9-octadecenoate, 2-methylfuran, 2-pentylfuran, 3,4-dihydro -2H-pyran;

[0142] Chlorine (1 species): 2-chlorooctane;

[0143] Nitrogen-containing substances (2 species): 2-octahydro-1(2H)-methylene naphthylmalononitrile, dimentin;

[0144] Others (1 species): phthalimide.

[0145] 3. Quantitative analysis results of release at room temperature:

[0146] Table 2 The concentration of samples released at room temperature

[0147]

[0148]

[0149] Note: "/" in the table means lower than the detection sensitivity of the instrument; "means not determined.

[0150] 4. Acute inhalation toxicity test results of high temperature pyrolysate in animals:

[0151] Animal acute inhalation of the material’s LD50: LC 50 50g/m 3 , The material is a low-toxicity material LC 50 50g/m 3 For low toxic materials).

[0152] The samples released at room temperature at 45℃ mainly contain carbon monoxide, carbon dioxide, and total hydrocarbons; during the 90-day sealing period, the highest concentration of emissions at room temperature did not exceed the allowable concentration of air components in nuclear submarine cabins (GJB11B-2012) and Harmful Workplaces Factors Occupational Exposure Limits Chemical Hazardous Factors" (GBZ2.1-2007) limits; there are about 45 kinds of high-temperature pyrolysis products at 700~1000℃; the half-lethal concentration of high-temperature pyrolysis products of this material when animals are inhaled acutely LC 50 50g/m 3 , It is a low toxic material.

[0153] Under the conditions consistent with this test, the material can be used in nuclear submarine cabins.

[0154] Three, mold resistance test:

[0155] 1 Test conditions:

[0156] 1.1 Test temperature and humidity

[0157] Constant temperature 29.8℃~30.2℃, relative humidity 94.8%~95.4%

[0158] 1.2 Test strains

[0159] Aspergillus niger (Aspergillus niger) strain number: AS3.3928

[0160] Asperaillus flavus (Asperaillus flavus) strain number: AS3.3950

[0161] Aspergillus versicolor (Aspergillus versicolor) strain number: AS3.3885

[0162] Penicillium funiculosum (Penicillium funiculosum) strain number: AS3.3875

[0163] Chaetomium globosum (Chaetomium globosum) strain number: AS3.4254

[0164] 1.3 Test period: 28 days

[0165] 1.4 Control sample: 3 pieces of pure cotton cloth strips 2 The test results are shown in Table 3 and Table 4:

[0166] Table 3 Inspection results of control samples at 7 days of mold test

[0167] Sample name and number

[0168] After a 7-day test, the moldy area of the three control samples set in the test all exceeded 90%, and the results showed that the test process was normal and effective.

[0169] Table 4 Inspection results after 28 days of mold test

[0170]

[0171] 4. The humidity and heat aging resistance, salt spray aging resistance, and weather aging resistance of the samples prepared in Example 1 are tested in Table 5:

[0172] Table 5 Test results of moisture and heat aging resistance, salt spray aging resistance, and weathering aging resistance of the samples prepared in Example 1

[0173]

[0174]

[0175] 5. The other properties of the coated board (JDPI-05a type green environment-friendly high-efficiency radon blocking material) prepared by the present invention are shown in Table 6.

[0176] Table 6 Performance parameters of anti-radon materials for coated plates

[0177]

[0178] The anti-radon material of the coated plate is a composite radon-resistant material made of polyimide hot-melt powder and a metal sheet. The anti-radon material of the coated plate is a high-efficiency radon-resistant material, and its low-toxicity material meets Nuclear submarine cabin use standards, flame retardancy and flammability meet the ship classification standards; mold resistance level reaches 0 standards, without any mold surviving; service life is greater than 20 years, with damp heat resistance, salt spray resistance, aging resistance, and radiation resistance . The radon blocking efficiency of the present invention reaches 99.99%, the composite material combined with the metal plate and the hot-melt powder has strong machinability, can be arbitrarily changed in shape to meet on-site requirements; installation is convenient and quick, energy consumption is saved, and efficiency is improved.

[0179] 6. Other properties of the anti-radon material (JBT-21S type radon material) are shown in Table 7.

[0180] Table 7 Other performance parameters of rubber anti-radon material (JBT-21S type)

[0181] Test items

[0182] The anti-radon material of the glue of the present invention can be directly sprayed on cave walls, walls and ground after mixing, adapting to site environment requirements, convenient and quick construction, saving energy consumption, and improving efficiency; the prepared green, environmentally friendly, high-efficiency radon-resistant material is a high Effective radon blocking material, with a radon blocking efficiency of 99.5%, and low toxicity, which can meet the standards for nuclear submarine cabins; flame retardancy and flammability meet the ship class standards, and its mold resistance level reaches 0 standards, and its service life is more than 20 years. At the same time, it has the properties of heat resistance, salt spray resistance, aging resistance and radiation resistance.

[0183] 7. The comparison effect between the 6000㎡ construction volume of the buckle plate installation method of the present invention and the 6000㎡ construction volume of the ordinary radon prevention method:

[0184] Table 8 The construction volume of 6000㎡ of common radon prevention method

[0185]

[0186] Among them, the black shaded part is the number of days required for this process.

[0187] Table 9 The installation method of the buckle plate of the present invention has a construction volume of 6000 square meters

[0188]

[0189] Among them, the black shaded part is the number of days required for this process.

[0190] It can be seen from Table 3 that the time required for these nine processes is: 3 days for measurement and positioning, 4 days for equipment in place, 7 days for wall dust removal, 7 days for wall dust cleaning, and 7 days for coating plate coating. It takes 7 days to install the coated board, 4 days to install the blank holder, 4 days to install the irregular surface of the wall, and 6 days to install the penetrating piece, totaling 49 days;

[0191] It can be seen from Table 4 that it takes 3 days to measure and locate, 4 days to install the equipment, 7 days to install the coated plate, 7 days to install the coated plate, 4 days to fill the reserved glue slot, and irregular walls. It takes 4 days for the surface paving and 6 days for the penetration piece installation, which takes 35 days in total. Therefore, the construction period required by the present invention is 14 days shorter than the construction period required by the ordinary radon prevention method.

PUM

Property	Measurement	Unit
Thickness	30.0 ~ 100.0	µm
Lc50	>= 50.0	g/m³

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Classification and recommendation of technical efficacy words

Easy to level
Easy to repair and replace

Automatic film winding device

ActiveCN112960432AEasy to levelEasy to wrap around

Owner:黄山源点新材料科技有限公司

Construction method for anti-radon engineering

A construction method and engineering technology, applied to floors, coverings/linings, buildings, etc., to achieve the effects of improving project quality, simplifying leveling, and reducing energy consumption

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Example Embodiment

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