Some standard content:
National Standard of the People's Republic of China
Synthetic--Rubber sports trackSubject content and scope of application
This standard specifies the technical requirements, test methods, inspection rules, use and maintenance of synthetic tracks. GB/T14833-93
This standard applies to stadium and hall tracks paved with mixed elastomers with polyurethane as the main material. 2 Definition
Synthetic--Rubber sports track refers to the surface layer of the venue paved with synthetic elastomers with rubber-plastic properties for track and field competitions. 3 Reference standards
GB/T 531
GB/T 1681
GB2941
Test method for rubber Shore A hardness
Determination of rebound resilience of vulcanized rubber
Standard temperature, humidity and time for environmental conditioning and testing of rubber specimens Preparation of vulcanized rubber samples and test specimens
GB9865
GB10111 Method for random sampling using random numbers Steel measuring tape
GB10633
GB/T10654
Determination of tensile strength and elongation at break of porous polymer elastic materials 4 Technical requirements
4.1 Appearance and dimensions
4.1.1 Appearance
No cracks or delamination; the anti-slip layer and the base rubber layer are firmly and evenly bonded; the seams are straight and without obvious bumps; the surface color is uniform and durable.
4.1.2 Marking lines
The marking lines should be clear, non-reflective, without obvious virtual edges, and firmly bonded to the surface layer. The distance between each marking line and the finish line is not allowed to have a negative difference, and the positive difference should be less than 1/10000.4.1.3 Flatness pass rate
The flatness pass rate of the plastic track shall not be less than 85%. 4.1.4 Thickness
The thickness of the plastic track used for competition shall not be less than 13mm, and the thickness of other non-competition auxiliary areas can be agreed upon by the supply and demand parties. 4.1.5 Slope
The transverse slope of the plastic track shall not exceed 11100, and the longitudinal slope shall not exceed 1:1000.4.2 The physical and mechanical properties shall comply with the provisions of Table 1. Approved by the State Bureau of Technical Supervision on December 30, 1993, 130
Implemented on October 1, 1994
Hardness (Shore A), degree
Tensile strength.MPa
Elongation at break, %
Compression recovery rate, %
Rebound value, %
Flame retardancy\, grade
Note: 1) This item shall be agreed upon by both the supplier and the buyer. 5 Test methods
5.1 Determination of flatness pass rate
Perform the method specified in Appendix A.
5.2 Determination of friction
Perform the method specified in Appendix B.
GB/T 14833—93
5.3 Determination of length
The length of the runway on the straight track shall be measured with a distance meter with an accuracy of not less than ±10mm/km or a grade 1 steel ruler in accordance with GB10633. When measuring with a steel ruler, the indication of the steel ruler shall be adjusted according to the full-length correction value of the steel ruler and the temperature expansion coefficient, including the distance length of the curve and the length of the curve part. The length value shall be converted into the angle value of the central angle of the circle corresponding to the length with the center of the semicircle as the center, and then measured with a theodolite with an accuracy of not less than ±2\.
5.4 Determination of slope
Carry out according to the method specified in Appendix C.
5.5 Determination of hardness
The sample shall be prepared according to the provisions of D3.1 in Appendix D and measured by the method specified in GB/T531. 5.6 The test specimens for tensile strength and elongation at break shall be prepared in accordance with the provisions of D3.1 in Appendix D and measured by the method specified in GB/T10654. The tensile speed shall be 100±10mm/min. The difference between the two parallel results shall be no more than 0.2MPa for tensile strength and no more than 22% for elongation at break. 5.7 The test specimens for rebound value shall be prepared in accordance with the provisions of D3.1 in Appendix D and measured by the method specified in GB/T1681. The difference between the two parallel results shall be no more than 4%. 5.8 The test specimens for compression recovery shall be prepared in accordance with the method specified in Appendix D. 5.9 The test specimens for flame retardancy shall be carried out in accordance with the method specified in Appendix E. 6 Inspection rules 6.1 The manufacturer shall ensure product quality. Each batch of products shall be accompanied by a product certificate and product instructions. 131
6.2 Batching and sampling:
GB/T14833-93
Each plastic track project is considered as a batch during inspection. Each batch shall be inspected for appearance and dimensions and physical and mechanical properties. When conducting physical and mechanical property inspections, samples shall be taken in accordance with the provisions of 6.2.1 to 6.2.4. Each specimen shall be tested and the arithmetic mean of the results shall be taken. 6.2.1 Each mixing amount during construction shall be considered as a sampling unit. Samples shall be randomly drawn in parallel with the construction sequence according to the specifications and quantities specified in Table 2. The sample shall be parked for no less than 48 hours under on-site conditions. Table 2
Quantity,
Area, n
4000~8000
≥8000
500mm×500mm×actual thickness
6.2.2 The samples shall be packed in plastic bags and placed in a cool and dry place. The name of the project, sampling date, sampling location, on-site climatic conditions, sampler and relevant special instructions shall be indicated on the packaging. 6.2.3 The samples shall be cured for more than 14 days before testing. Accelerated curing can also be carried out in the laboratory. The validity period of the samples is six months. 6.2.4 If necessary, samples can be directly dug from the completed plastic track. When sampling, 20m is used as a sampling unit. Random numbers are obtained according to GB10111 and then the sampling points are determined in a predetermined order. 6.3 Qualification judgment:
The test results are qualified when they meet the requirements of 4.1 and 4.2. When one of the test results is unqualified, double sampling should be conducted for inspection. If the arithmetic mean is still unqualified, the batch of plastic tracks is judged to be unqualified.
7 Use, maintenance and repair
7.1 It can be used all day long with appropriate drainage facilities. 7.2 It should be used reasonably according to its scope of use, kept clean, and avoid long-term load, mechanical shock and friction to extend its service life. 7.3 Repairs should be carried out by a professional construction team.
A1 Scope of application
GB/T14833-93
Appendix A
Measurement method for the pass rate of the flatness of plastic tracks (supplement)
This method is applicable to the measurement of the flatness of plastic tracks. A2 Definition
Flatness: The flatness of a plastic track refers to the flatness of the plastic track expressed by the maximum depression within a distance of 3m or 1m. A3 Instruments
A3.13m ruler: the ruler length accuracy is ±3mm, and the bottom surface of the ruler is straight and has no defects. A3.2 Feeler gauge: 0~25mm accuracy is ±1mm. A3.3 Theodolite: accuracy is ±2°.
A4 Measurement steps
Using the straight and curved dividing line of the plastic track as the boundary, mark a point every 3m in the horizontal and vertical directions of the straight track. For the curved track, use the center point as the center of the circle, and use the theodolite to make a radial line every 5°, and mark a point every 3m along the radial line. Place the 3m ruler gently between any two adjacent points, and use the feeler gauge to measure the maximum local depression. If it does not exceed 4mm, or place the 1m ruler gently in the middle of any two points, and use the feeler gauge to measure the maximum local depression. If it does not exceed 3mm, it is a qualified point. The total number of measurement points for each group of measurements should not be less than 40. 5 Calculation of results
Where: P-
Qualified flatness rate, %,
Ri—Qualified points;
Total number of measurement points.
A6 Measurement report
The test report shall include the following contents:
Number of measurement points;
Weather conditions during measurement;
Measurement results;
Special records;
Measurer and measurement date.
B1 Scope of application
GB/T 14833-93
Appendix B
Measuring method for thickness of plastic track
(Supplement)
This method is applicable to the measurement of thickness of plastic track. B2 Instrument
Vernier caliper or thickness gauge with an accuracy of 0.01mm. B3 Measurement steps
Dig out a sample with a diameter of 10-25mm on the plastic track. Grind the upper and lower surfaces of the sample with a grinding wheel according to Article 4.8 of GB9865 until the ground area accounts for about 50% of the grinding surface area of the sample. Then use a vernier caliper or thickness gauge to measure the thickness between the upper and lower surfaces of the sample from three different angles, accurate to 0.01mm. B4 Measurement results
The measurement result is the median of three measured values, and one decimal place is retained. 5 Test report
The test report includes the following contents:
Sampling location;
Test results;
Special records,
Tester,
Test date.
Appendix C
Method for measuring the slope of plastic runway
(Supplement)
Scope of application
This method is applicable to the determination of the transverse and longitudinal slopes of plastic runways. C2 Instruments
C2.1Theodolite: accuracy ±2\.
C2.2 Level: accuracy is soil 1mm.
C3 Measurement steps
C3.1 Starting from the straight and curved dividing line of the plastic track, mark a group of points every 10m on the straight track, and mark a group of points every 15° on the curved track with the center point as the center. Each group of points includes two points on the inner edge of the first track and the outer edge of the eighth track. 134
GB/T 14833--93
C3.2 Use a level to measure the elevation of each point, and calculate the height difference between each group of two points and the height difference between two adjacent points on the same track of the first and eighth tracks. C4 Result calculation
Transverse slope:
Where: P, transverse slope,
hi-—the height difference between each group of two points;
L——the distance between each group of two points.
Longitudinal slope:
Wherein; P2--longitudinal slope;
hz———height difference between two adjacent points on the same track; L—distance between two adjacent points on the same track.
The results of transverse slope and longitudinal slope are the absolute average of each measurement result. Each batch of measurements shall be no less than 40 groups. Test report
The test report shall include:
Number of measurement points;
Measurement results;
Special records;
Tester and test date.
Appendix D
Test method for compression recovery rate of plastic track
(Supplement)
D1 Scope of application
This method is applicable to the determination of compression recovery rate of plastic track. D2 Definition
Compression recovery rate refers to the ratio of the thickness of the sample before and after compression after the sample is subjected to compression deformation test according to the prescribed method and recovered in the natural state for 3 minutes.
D3 Sample
D3.1. Sample preparation
Cut the sample in the middle of the sample in an area not less than 50mm away from the edge of the sample. The cut sample is ground according to Article 4.8 of GB9865. The ground sample is placed in accordance with the provisions of GB2941 before the test. D3.2 Specifications and quantity
The sample thickness is 12.0±0.5mm and the side length is 50±0.5mm. Each test shall not be less than 3 samples. 135
D4 Test steps
GB/T 14833--93
Adjust the press so that its compression speed is 50mm/min, and adjust the thickness indicator. Then make the sample contact with the upper and lower pressing plates (when the pressure indication is 5N) and start recording the thickness.
Start the press, compress the sample at a speed of 50mm/min, and restore it to its natural state after being compressed to 70% of the original thickness. This is the first pre-compression. A total of 3 pre-compressions are performed. The sample should be parked in a natural state for 3 minutes between each compression. Perform the fourth compression according to the above method, accurately deform the sample by 50% and then quickly restore it to its natural state, and restore it for 3 minutes under laboratory conditions, and measure its thickness with an accuracy of 0.1mm. Calculation of results
Compression recovery rate:
Where; K—-compression recovery rate, %;
Thickness of the sample after compression, mm;
ho—Thickness of the sample before compression, mm.
The test result should be the arithmetic mean of the 3 samples, and the result should be expressed to an integer. However, if the result of any sample exceeds the arithmetic mean by ±10%, the group of tests is invalid and the sample should be re-sampled for testing. D6 Tolerance
The difference between the two results of parallel determination shall not exceed 1.5%. D7 Test report
Should include the following contents:
Source of sample;
Test room temperature and humidity;
Thickness of sample;
Test result;
Tester and test date.
Appendix E
Determination method of flame retardant performance of plastic runway
(Supplement)
E1 Scope of application
This method is applicable to the determination of flame retardancy of horizontal plastic runway under moderate flame. E2 Definition
When the diameter of the burning patch left on the surface of the plastic runway after the combustion is extinguished under the action of flame is less than or equal to 50mm, it is flame retardant level 1.
E3 Sample preparation
The sample should be cut from different positions of the test object, and the sample specification is 100mm×100mm. 136
Each test - generally 5 samples should be measured. GB/T14833--93
Before testing, the sample should be kept under test conditions for at least 48 hours. E4 Instruments and reagents
E4.1 Fiber layer discs composed of overlapping thin fiber fabrics with a diameter of 25mm (e.g. thin cotton cloth); E4.2 Alcohol with a concentration of 96%;
E4.3 A measuring tube with a capacity of 10mL or a pipette with a capacity of 2.5mL; E4.4 A wind-proof wooden board with a thickness of at least 20mm as large as the sample. E5 Determination steps
Place overlapping fiber layer discs weighing 0.8g in the middle of the sample. The fiber layer discs are evenly soaked with 2.5mL of alcohol, then ignited and allowed to burn naturally. When the burning flame and afterglow are extinguished, measure the diameter of the burning patch left on the surface of the sample (accurate to 1mm).
The test should be carried out in a non-ventilated place.
During combustion, if the fiber layer turns over and affects the size of the burning patch, the sample should be replaced and retested. E6 Test results
The diameter of the burning patches left on the surfaces of the five samples is less than or equal to 50mm. The sample can be judged as Class 1 flame retardant. E7: Test report
The test report includes the following contents:
Sample name, color, thickness;
Flame retardant properties;
The diameter of the largest burning patch;
Special observations;
Tester and test date.
Additional notes:
This standard was proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Synthetic Rubber Subcommittee of the National Technical Committee for Standardization of Rubber and Rubber Products. This standard was drafted by Baoding Great Wall Synthetic Rubber Co., Ltd. The main drafters of this standard are Shi Yongchang, Di Baoqian, Zhang Min, Zhang Fuxuan, and Ge Rui. 137Transverse slope,
hi-—the height difference between two points in each group;
L——the distance between two points in each group.
Longitudinal slope:
Where; P2--longitudinal slope;
hz———the height difference between two adjacent points on the same track; L—the distance between two adjacent points on the same track.
The results of transverse slope and longitudinal slope are the absolute average of each measurement result. Each batch of measurements shall be no less than 40 groups. Test report
The test report shall include:
Number of measurement points;
Measurement results;
Special records;
Tester and test date.
Appendix D
Test method for compression recovery rate of plastic track
(Supplement)
D1 Scope of application
This method is applicable to the determination of compression recovery rate of plastic track. D2 Definition
Compression recovery rate refers to the ratio of the thickness of the sample before and after compression after the sample is subjected to compression deformation test according to the prescribed method and recovered in the natural state for 3 minutes.
D3 Sample
D3.1. Sample preparation
Cut the sample in the middle of the sample in an area not less than 50mm away from the edge of the sample. The cut sample is ground according to Article 4.8 of GB9865. The ground sample is placed in accordance with the provisions of GB2941 before the test. D3.2 Specifications and quantity
The sample thickness is 12.0±0.5mm and the side length is 50±0.5mm. Each test shall not be less than 3 samples. 135
D4 Test steps
GB/T 14833--93
Adjust the press so that its compression speed is 50mm/min, and adjust the thickness indicator. Then make the sample contact with the upper and lower pressing plates (when the pressure indication is 5N) and start recording the thickness.
Start the press, compress the sample at a speed of 50mm/min, and restore it to its natural state after being compressed to 70% of the original thickness. This is the first pre-compression. A total of 3 pre-compressions are performed. The sample should be parked in a natural state for 3 minutes between each compression. Perform the fourth compression according to the above method, accurately deform the sample by 50% and then quickly restore it to its natural state, and restore it for 3 minutes under laboratory conditions, and measure its thickness with an accuracy of 0.1mm. Calculation of results
Compression recovery rate:
Where; K—-compression recovery rate, %;
Thickness of the sample after compression, mm;
ho—Thickness of the sample before compression, mm.
The test result should be the arithmetic mean of the 3 samples, and the result should be expressed to an integer. However, if the result of any sample exceeds the arithmetic mean by ±10%, the group of tests is invalid and the sample should be re-sampled for testing. D6 Tolerance
The difference between the two results of parallel determination shall not exceed 1.5%. D7 Test report
Should include the following contents:
Source of sample;
Test room temperature and humidity;
Thickness of sample;
Test result;
Tester and test date.
Appendix E
Determination method of flame retardant performance of plastic runway
(Supplement)
E1 Scope of application
This method is applicable to the determination of flame retardancy of horizontal plastic runway under moderate flame. E2 Definition
When the diameter of the burning patch left on the surface of the plastic runway after the combustion is extinguished under the action of flame is less than or equal to 50mm, it is flame retardant level 1.
E3 Sample preparation
The sample should be cut from different positions of the test object, and the sample specification is 100mm×100mm. 136
Each test - generally 5 samples should be measured. GB/T14833--93
Before the test, the sample should be kept under the test conditions for at least 48 hours. E4 Instruments and reagents
E4.1 Fiber layer discs composed of overlapping thin fiber fabrics with a diameter of 25mm (e.g. thin cotton cloth); E4.2 Alcohol with a concentration of 96%;
E4.3 A measuring tube with a capacity of 10mL or a pipette with a capacity of 2.5mL; E4.4 A wind-proof wooden board with a thickness of at least 20mm as large as the sample. E5 Determination steps
Place overlapping fiber layer discs weighing 0.8g in the middle of the sample. The fiber layer discs are evenly soaked with 2.5mL of alcohol, then ignited and allowed to burn naturally. When the burning flame and afterglow are extinguished, measure the diameter of the burning patch left on the surface of the sample (accurate to 1mm).
The test should be carried out in a non-ventilated place.
During combustion, if the fiber layer turns over and affects the size of the burning patch, the sample should be replaced and retested. E6 Test results
The diameter of the burning patches left on the surfaces of the five samples is less than or equal to 50mm. The sample can be judged as Class 1 flame retardant. E7: Test report
The test report includes the following contents:
Sample name, color, thickness;
Flame retardant properties;
The diameter of the largest burning patch;
Special observations;
Tester and test date.
Additional notes:
This standard was proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Synthetic Rubber Subcommittee of the National Technical Committee for Standardization of Rubber and Rubber Products. This standard was drafted by Baoding Great Wall Synthetic Rubber Co., Ltd. The main drafters of this standard are Shi Yongchang, Di Baoqian, Zhang Min, Zhang Fuxuan, and Ge Rui. 137Transverse slope,
hi-—the height difference between two points in each group;
L——the distance between two points in each group.
Longitudinal slope:
Where; P2--longitudinal slope;
hz———the height difference between two adjacent points on the same track; L—the distance between two adjacent points on the same track.
The results of transverse slope and longitudinal slope are the absolute average of each measurement result. Each batch of measurements shall be no less than 40 groups. Test report
The test report shall include:
Number of measurement points;
Measurement results;
Special records;
Tester and test date.
Appendix D
Test method for compression recovery rate of plastic track
(Supplement)
D1 Scope of application
This method is applicable to the determination of compression recovery rate of plastic track. D2 DefinitionwwW.bzxz.Net
Compression recovery rate refers to the ratio of the thickness of the sample before and after compression after the sample is subjected to compression deformation test according to the prescribed method and recovered in the natural state for 3 minutes.
D3 Sample
D3.1. Sample preparation
Cut the sample in the middle of the sample in an area not less than 50mm away from the edge of the sample. The cut sample is ground according to Article 4.8 of GB9865. The ground sample is placed in accordance with the provisions of GB2941 before the test. D3.2 Specifications and quantity
The sample thickness is 12.0±0.5mm and the side length is 50±0.5mm. Each test shall not be less than 3 samples. 135
D4 Test steps
GB/T 14833--93
Adjust the press so that its compression speed is 50mm/min, and adjust the thickness indicator. Then make the sample contact with the upper and lower pressing plates (when the pressure indication is 5N) and start recording the thickness.
Start the press, compress the sample at a speed of 50mm/min, and restore it to its natural state after being compressed to 70% of the original thickness. This is the first pre-compression. A total of 3 pre-compressions are performed. The sample should be parked in a natural state for 3 minutes between each compression. Perform the fourth compression according to the above method, accurately deform the sample by 50% and then quickly restore it to its natural state, and restore it for 3 minutes under laboratory conditions, and measure its thickness with an accuracy of 0.1mm. Calculation of results
Compression recovery rate:
Where; K—-compression recovery rate, %;
Thickness of the sample after compression, mm;
ho—Thickness of the sample before compression, mm.
The test result should be the arithmetic mean of the 3 samples, and the result should be expressed to an integer. However, if the result of any sample exceeds the arithmetic mean by ±10%, the group of tests is invalid and the sample should be re-sampled for testing. D6 Tolerance
The difference between the two results of parallel determination shall not exceed 1.5%. D7 Test report
Should include the following contents:
Source of sample;
Test room temperature and humidity;
Thickness of sample;
Test result;
Tester and test date.
Appendix E
Determination method of flame retardant performance of plastic runway
(Supplement)
E1 Scope of application
This method is applicable to the determination of flame retardancy of horizontal plastic runway under moderate flame. E2 Definition
When the diameter of the burning patch left on the surface of the plastic runway after the combustion is extinguished under the action of flame is less than or equal to 50mm, it is flame retardant level 1.
E3 Sample preparation
The sample should be cut from different positions of the test object, and the sample specification is 100mm×100mm. 136
Each test - generally 5 samples should be measured. GB/T14833--93
Before testing, the sample should be kept under test conditions for at least 48 hours. E4 Instruments and reagents
E4.1 Fiber layer discs composed of overlapping thin fiber fabrics with a diameter of 25mm (e.g. thin cotton cloth); E4.2 Alcohol with a concentration of 96%;
E4.3 A measuring tube with a capacity of 10mL or a pipette with a capacity of 2.5mL; E4.4 A wind-proof wooden board with a thickness of at least 20mm as large as the sample. E5 Determination steps
Place overlapping fiber layer discs weighing 0.8g in the middle of the sample. The fiber layer discs are evenly soaked with 2.5mL of alcohol, then ignited and allowed to burn naturally. When the burning flame and afterglow are extinguished, measure the diameter of the burning patch left on the surface of the sample (accurate to 1mm).
The test should be carried out in a non-ventilated place.
During combustion, if the fiber layer turns over and affects the size of the burning patch, the sample should be replaced and retested. E6 Test results
The diameter of the burning patches left on the surfaces of the five samples is less than or equal to 50mm. The sample can be judged as Class 1 flame retardant. E7: Test report
The test report includes the following contents:
Sample name, color, thickness;
Flame retardant properties;
The diameter of the largest burning patch;
Special observations;
Tester and test date.
Additional notes:
This standard was proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Synthetic Rubber Subcommittee of the National Technical Committee for Standardization of Rubber and Rubber Products. This standard was drafted by Baoding Great Wall Synthetic Rubber Co., Ltd. The main drafters of this standard are Shi Yongchang, Di Baoqian, Zhang Min, Zhang Fuxuan, and Ge Rui. 1375mL alcohol is evenly soaked, then ignited and allowed to burn naturally. When the flame and afterglow are extinguished, the diameter of the burning patch left on the surface of the sample is measured (accurate to 1mm).
The test should be carried out in a non-ventilated place.
When burning, if the fiber layer flips and affects the size of the burning patch, the sample should be replaced and tested again. E6 Test results
The diameter of the burning patch left on the surface of the 5 samples is less than or equal to 50mm. The sample can be judged as Class 1 flame retardant. E7: Test report
The test report includes the following contents:
Sample name, color, thickness;
Flame retardant properties;
The diameter of the largest burning patch;
Special observations;
Tester and test date.
Additional remarks:
This standard is proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Synthetic Rubber Sub-Technical Committee of the National Technical Committee for Standardization of Rubber and Rubber Products. This standard was drafted by Baoding Changcheng Synthetic Rubber Co., Ltd. The main drafters of this standard are Shi Yongchang, Di Baoqian, Zhang Min, Zhang Fuxuan and Ge Rui.5mL alcohol is evenly soaked, then ignited and allowed to burn naturally. When the flame and afterglow are extinguished, the diameter of the burning patch left on the surface of the sample is measured (accurate to 1mm).
The test should be carried out in a non-ventilated place.
When burning, if the fiber layer flips and affects the size of the burning patch, the sample should be replaced and tested again. E6 Test results
The diameter of the burning patch left on the surface of the 5 samples is less than or equal to 50mm. The sample can be judged as Class 1 flame retardant. E7: Test report
The test report includes the following contents:
Sample name, color, thickness;
Flame retardant properties;
The diameter of the largest burning patch;
Special observations;
Tester and test date.
Additional remarks:
This standard is proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Synthetic Rubber Sub-Technical Committee of the National Technical Committee for Standardization of Rubber and Rubber Products. This standard was drafted by Baoding Changcheng Synthetic Rubber Co., Ltd. The main drafters of this standard are Shi Yongchang, Di Baoqian, Zhang Min, Zhang Fuxuan and Ge Rui.
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