Background
Since 2014, "poisoned track" incidents have occurred in schools in Beijing, Suzhou, Wuxi, Nanjing, Changzhou, Shenzhen, Shanghai, Hebei and other places, causing some students to suffer from nosebleeds, allergies, dizziness, nausea and other symptoms. In recent years, a large number of schools have used plastic track to replace the original playground materials due to upgrades and renovations. However, since the lack of a regulatory system, the quality of the plastic track is worried. Some unscrupulous businesses use toxic materials for construction, which brings great harm to the teachers and students who use the track. In order to ensure the health and safety of students, since 2016, the Ministry of Education has negotiated with the General Administration of Sports, the Ministry of Environmental Protection, the China Petroleum and Chemical Industry Federation and other departments to improve the plastic track standards. In 2018, the National Standardization Committee released a new version of the national mandatory standard for plastic track GB 36246-2018 "Sports areas with synthetic surfaces for primary and middle schools".
Synthetic surfaces layer of sports areas refers to the ground layer of sports area paved with polymer synthetic materials, including plastic track, basketball and volleyball stadium and artificial turf, Granules, adhesives, etc.
Existing Standard
- National mandatory standards GB 36246-2018 "Sports areas with synthetic surfaces for primary and middle schools"
- National recommended standard GB/T 14833-2011 "Synthetic materials track surface"
- Zhejiang Provincial Department of Education, Zhejiang Provincial Department of Environmental Protection, Zhejiang Provincial Department of Housing and Urban-Rural Development, and Zhejiang Provincial Bureau of Quality and Technical Supervision Notice on further strengthening the construction and management of synthetic material sports areas in schools.
- Guidance for the Construction of Synthetic Materials Sports areas Facilities in Jiangsu Province
- Shanghai Group Standard T/SHHJ000003-2018 " Limit of harmful substances of synthetic surfaces for school sports areas "
- Shenzhen Engineering Construction Technical Specification " Standard for quality control of synthetic sports surfaces "
From November 14th to November 21st, 2016, the National Standards Committee solicited opinions on the project of "Sports areas with synthetic surfaces for primary and middle schools".
From December 6, 2016 to December 13, 2016, the National Standards Committee solicited opinions on the "Technical requirements and test methods for sports field Part 6: Track and field" and "Sports Areas Ground Floors".
On December 28, 2016, the official website of the National Standards Committee updated the notice on the issuance of the national standard plan for "Sports areas with synthetic surfaces for primary and middle schools".
On March 18, 2017, CIRS C&K Testing was invited to participate in the second plenary meeting of the first session of the Zhejiang Sports Venue Construction Industry Association, and explained and introduced the construction requirements of synthetic material sports areas in Zhejiang Province.
In 2018, the National Standardization Committee released a new version of the national mandatory standard for plastic runways GB 36246-2018 " Sports areas with synthetic surfaces for primary and middle schools ".
Service Items
GB 36246-2018 Synthetic material surface layer and raw material test items information table | ||||
Sample Type | Category | Test Items | Indicator | Test method |
Cast-in-place and prefabricated surface finished product | Thickness (excluding professional competition acrylic coating finish) | Thickness | Track and field areas ≥ 13mm; ball areas ≥ 8mm; other activity areas ≥ 10mm | GB/T 22517.6 (Track and field) |
GB 36246-2018 Appendix C (ball court and other activity areas) | ||||
Physical and mechanical properties (excluding professional competition acrylic coating finish) | Shock absorbency/(%) (measured at 3 temperature points) | Track and field areas: 35-50; ball areas: 20-50; other activity areas s: 25-50 | GB 36246-2018 Appendix D | |
Vertical deformation（mm） | 0.6-3.0 | GB 36246-2018 Appendix E | ||
Anti-skidding value /(BPN,20℃) | Track and field areas ≥47 (wet test); ball areas and other activity areas: 80-110 (dry test)） | GB 36246-2018 Appendix F | ||
Tensile Strength（MPa） | Water-permeable surface layer ≥ 0.4; non-water-permeable surface layer ≥ 0.5 | GB/T 10654-2001 | ||
Elongation at break（%） | ≥40 | GB/T 10654-2001 | ||
Flame Retardant Properties (Grade) | Ｉ | GB/T 14833-2011 | ||
Inorganic filler | Inorganic fillers (for synthetic topcoats) | Inorganic filler content≤65% | GB/T 4498.1-2013 | |
Hazardous substance content | Sum of 3 kinds of phthalic acid esters (DBP, BBP, DEHP) (g/kg) | ≤1.0 | GB 36246-2018 Appendix A | |
Sum of 3 kinds of phthalic acid esters (DNOP, DINP, DIDP) (g/kg) | ≤1.0 | GB 36246-2018 Appendix A | ||
Sum of 18 PAHs (mg/kg) | ≤50 | GB 36246-2018 Appendix B | ||
≤20 (the part within 5mm of the upper surface) | ||||
Benzo(a)pyrene (mg/kg) | ≤1.0 | GB 36246-2018 Appendix B | ||
SCCPs（g/kg） | ≤1.5 | GB 36246-2018 Appendix G | ||
MOCA/(g/kg) | ≤1.0 | GB 36246-2018 Appendix H | ||
Sum of free toluene diisocyanate (TDI) and free hexamethylene diisocyanate (HDI)（g/kg） | ≤0.2 | GB/T 18446 | ||
Free diphenylmethane diisocyanate (MDI) (g/kg) | ≤1.0 | GB/T 18446 | ||
Soluble Lead (mg/kg) | ≤50 | GB/T 23991 | ||
Soluble Cadmium (mg/kg) | ≤10 | GB/T 23991 | ||
Soluble Chromium (mg/kg) | ≤10 | GB/T 23991 | ||
Soluble Mercury (mg/kg) | ≤2 | GB/T 23991 | ||
Hazardous Substance Release | Total Volatile Organic Compounds (TVOC) | ≤5.0 | GB 36246-2018 Appendix I | |
Formaldehyde | ≤0.4 | |||
Benzene | ≤0.1 | |||
Sum of toluene, xylene, ethylbenzene | ≤1.0 | |||
Carbon disulfide | ≤7.0 | |||
Odor | Odor Class/Class | ≤3 | GB 36246-2018 Appendix J | |
Aging resistance to artificial weather | Aging resistance to artificial weather | The tensile strength and elongation at break meet the following indicators after 500 h. | GB/T 16422.2-2014 | |
Tensile strength（MPa） | Water-permeable surface layer ≥ 0.4; non-water-permeable surface layer ≥ 0.5 | GB/T 10654-2001 | ||
Elongation at break（%） | ≥40 | GB/T 10654-2001 | ||
Solid raw material | Hazardous substances content | Sum of 18 PAHs (mg/kg) | ≤50 | GB 36246-2018 Appendix B |
Benzo(a)pyrene (mg/kg) | ≤1.0 | GB 36246-2018 Appendix B | ||
Soluble Lead (mg/kg) | ≤50 | GB/T 23991 | ||
Soluble Cadmium (mg/kg) | ≤10 | GB/T 23991 | ||
Soluble Chromium (mg/kg) | ≤10 | GB/T 23991 | ||
Soluble Mercury (mg/kg) | ≤2 | GB/T 23991 | ||
Polymer | Total polymer (only for surface layer anti-skidding rubber particles) | Total polymer≥20% | GB/T 14837.1和GB/T 14837.2 | |
Non-solid raw materials | Hazardous substance content | Sum of 3 kinds of phthalic acid esters (DBP, BBP, DEHP) (g/kg) | ≤1.0 | GB 36246-2018 Appendix A |
Sum of 3 kinds of phthalic acid esters (DNOP, DINP, DIDP) (g/kg) | ≤1.0 | GB 36246-2018 Appendix A | ||
SCCPs （g/kg） | ≤1.5 | GB 36246-2018 Appendix G | ||
Sum of free toluene diisocyanate (TDI) and free hexamethylene diisocyanate (HDI)（g/kg） | ≤10 | GB/T 18446 | ||
Volatile organic compounds (g/L) | ≤50 | GB/T 23986-2009 | ||
Free formaldehyde (g/kg) | ≤0.5 | GB 18583 | ||
Benzene | ≤0.05 | GB 18581 | ||
Sum of toluene, xylene, ethylbenzene | ≤1.0 | GB 18581 | ||
Soluble Lead (mg/kg) | ≤50 | GB/T 23991 | ||
Soluble Cadmium (mg/kg) | ≤10 | GB/T 23991 | ||
Soluble Chromium (mg/kg) | ≤10 | GB/T 23991 | ||
Soluble Mercury (mg/kg) | ≤2 | GB/T 23991 | ||
GB 36246-2018 Artificial grass surface layer finished product and raw material test item information table | ||||
Sample Type | Category | Test Items | Indicator | Test Method |
Finished artificial grass surface | Physical and mechanical properties | Shock absorbency/(%) (measured at 3 temperature points) | 45-70 | GB 36246-2018 Appendix D |
Vertical deformation (mm) | 4~11 | GB 36246-2018 Appendix E | ||
Grass breaking force (N): tate yarn | ≥60 | GB 36246-2018 （6.7） | ||
Grass breaking force (N): monofilament | ≥10 | GB 36246-2018 （6.7） | ||
Single tuft of grass pulling force（N） | ≥20 | QB/T 1090-2001 | ||
Hazardous substance content | Sum of 3 kinds of phthalic acid esters (DBP, BBP, DEHP) (g/kg) | ≤1.0 | GB 36246-2018 Appendix A | |
Sum of 3 kinds of phthalic acid esters (DNOP, DINP, DIDP) (g/kg) | ≤1.0 | GB 36246-2018 Appendix A | ||
Sum of 18 PAHs (mg/kg) | ≤50 | GB 36246-2018 Appendix B | ||
Benzo(a)pyrene (mg/kg) | ≤1.0 | GB 36246-2018 Appendix B | ||
Soluble Lead (mg/kg) | ≤50 | GB/T 23991 | ||
Soluble Cadmium (mg/kg) | ≤10 | GB/T 23991 | ||
Soluble Chromium (mg/kg) | ≤10 | GB/T 23991 | ||
Soluble Mercury (mg/kg) | ≤2 | GB/T 23991 | ||
Hazardous substance release | Total Volatile Organic Compounds (TVOC) | ≤5.0 | GB 36246-2018 Appendix I | |
Formaldehyde | ≤0.4 | |||
Benzene | ≤0.1 | |||
Sum of toluene, xylene, ethylbenzene | ≤1.0 | |||
Aging resistance to artificial weather | Aging resistance to artificial weather | After 500h, the breaking force of grass silk shall not be lower than 80% of the measured value before aging. | GB/T 16422.2-2014 | |
Grass breaking force (N): tate yarn | ≥48 | GB 36246-2018 （6.7） | ||
Grass breaking force (N): monofilament | ≥8 | GB 36246-2018 （6.7） | ||
Solid raw material | Hazardous substance content | Sum of 18 PAHs (mg/kg) | ≤20 | GB 36246-2018 Appendix B |
Benzo(a)pyrene (mg/kg) | ≤1.0 | GB 36246-2018 Appendix B | ||
Soluble Lead (mg/kg) | ≤50 | GB/T 23991 | ||
Soluble Cadmium (mg/kg) | ≤10 | GB/T 23991 | ||
Soluble Chromium (mg/kg) | ≤10 | GB/T 23991 | ||
Soluble Mercury (mg/kg) | ≤2 | GB/T 23991 | ||
Polymer (artificial grass surface filling particles) | Total polymer | Total polymer≥20% | GB/T 14837.1和GB/T 14837.2 | |
Odor | Odor Class/Class | ≤3 | GB 36246-2018 Appendix J | |
Non-solid raw material | Hazardous substance content | Sum of 3 kinds of phthalic acid esters (DBP, BBP, DEHP) (g/kg) | ≤1.0 | GB 36246-2018 Appendix A |
Sum of 3 kinds of phthalic acid esters (DNOP, DINP, DIDP) (g/kg) | ≤1.0 | GB 36246-2018 Appendix A | ||
SCCPs （g/kg） | ≤1.5 | GB 36246-2018 Appendix G | ||
Sum of free toluene diisocyanate (TDI) and free hexamethylene diisocyanate (HDI)（g/kg） | ≤10 | GB/T 18446 | ||
Volatile organic compounds (g/L) | ≤50 | GB/T 23986-2009 | ||
Free formaldehyde (g/kg) | ≤0.50 | GB 18583 | ||
Benzene | ≤0.05 | GB 18581 | ||
Sum of toluene, xylene, ethylbenzene | ≤1.0 | GB 18581 | ||
Soluble Lead (mg/kg) | ≤50 | GB/T 23991 | ||
Soluble Cadmium (mg/kg) | ≤10 | GB/T 23991 | ||
Soluble Chromium (mg/kg) | ≤10 | GB/T 23991 | ||
Soluble Mercury (mg/kg) | ≤2 | GB/T 23991 | ||
Application Scenarios
CIRS C&K Testing can provide testing services for raw materials and finished products of plastic track for different entrusted customers such as education bureaus, quality supervision bureaus, schools, production enterprises, track construction units, etc. It is suitable for design, material selection, construction, material entry inspection and finished product acceptance of sports areas with synthetic surfaces used in primary and middle schools. If you have any needs or questions, please contact us at test@cirs-group.com.
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