From November 1, 2018, that is, today, primary and secondary school synthetic material surface sports venues (GB36246 - 2018) will be fully implemented; the standard will be issued by the National Bureau of Education on May 7, 2018, half a year later, and will be formally implemented tomorrow.

In 2005, the State issued "Sports Equipment and Places in Primary and Secondary Schools Part 11: Composite Material Surface Sports Places" (GB/T 19851.11-2005), which will be abolished. China's sports ground industry will be measured by a new yardstick.

The Great Change of New and Old National Standards from Recommendation to Mandatory Implementation

Prior to the implementation of the "New National Standard", the reference standard of plastic runway in primary and secondary schools was "Sports Equipment and Places in Primary and Secondary Schools Part 11: Composite Material Surface Sports Places" (GB/T 19851.11-2005), which was issued in 2005. The appearance and specifications, marking lines, smoothness, thickness, gradient, physical and mechanical properties of the runway and corresponding inspection methods were all done in this standard. Provisions, in respect of safety and health, put forward "requirements in line with relevant national standards".

In 2016, the Ministry of Education stopped the construction and maintenance of plastic runways and took the lead in revising the new national standard of plastic runways because of the outbreak of many "poisonous runways" incidents in primary and secondary schools across the country. "Primary and secondary school synthetic material surface sports venues" (GB 36246-2018) by the Ministry of Education Research and Development Center for Education Equipment, Tsinghua University, Shenzhen Institute of Metrological Quality Inspection, Wuhan Institute of Physical Education and other 26 units jointly drafted. The new national standard organizes more than 100 expert meetings and demonstrations, as well as on-the-spot investigation and sampling inspection nationwide, and collects numerous verification experiments of hundreds of enterprises'products on the market.

The new national standard to be implemented is the national compulsory implementation standard, while the old national standard to be replaced is the recommended national standard, which is also one of the biggest changes between the old and new national standards.

From raw materials to paving, the new national standard has strengthened the control of all links.

The new national standard adds a very important content, raw materials, pavement and other links need to issue type inspection reports, get the qualifications of sports venues and facilities before entering the market.  The validity of the inspection report is only one year. Before the new national standard was issued, there was no strict access standard, the market was chaotic, and it was impossible to determine whether it was the problem of raw materials or paving.

The old national standard issued in 2005 mainly regulates the physical properties of runway, such as skid resistance and impact resistance, from the perspective of school use, while its chemical properties are vague. It only emphasizes that it meets the current national standards in principle. In this revision, the chemical properties of the runway will be included in the standard, and perfect restrictions and testing requirements for harmful substances will be put forward from the beginning of raw materials, so as to realize the corresponding specifications in all links from design, construction to final acceptance.

The harmful substances in the new national standard were added to 18 items and subdivided into three categories.

In the old national standard, a total of 7 harmful substances (4 of which are heavy metals) have been limited. In the new national standard, the number is 18, which is divided into three categories: harmful substance content, harmful substance release and odor.

The new national standard stipulates 18 kinds of harmful substances that may be produced in the construction of campus runway, and limits the volatile organic compounds in the built runway according to the standard of home decoration. If the total volatile organic compounds produced in the runway should not be higher than 5 mg/cubic meters, formaldehyde should not be higher than 0.4 mg/cubic meters, and carbon disulfide should not be higher than 7 mg/cubic meters. The requirement of odor grade index is also increased to ensure that the synthetic surface layer is close to odorless in practical use. If the grade of odor assessment is grade 4, further cause analysis and rectification should be carried out. If the odor assessment is still not up to the standard after one month, replacement or removal should be carried out. When the olfaction rating is 5, removal should be done.

Undeniably, compared with the old standard, the new national standard has made great progress, but the vitality of the standard lies in the implementation; the new national standard for the quality improvement of plastic runway and quality and safety checking ability in the end, it is important to see the landing and implementation of the standard.

If enterprises violate the standards when producing plastic runway products, and do not strictly manufacture according to the standards, jerry-building and material reduction during the construction of plastic runway construction can not strictly implement the requirements of the standards, and the tenderers and supervisors of plastic runway have a weak sense of responsibility and do not strictly supervise according to the requirements of the standards, then even if the Chinese standards have the most stringent indicators in the world, there is no Chinese standard. Use;

The new national standard is an excellent starting point to strangle the living soil of the "poisonous runway" from the root, but it is more important to ensure the process control. The production, construction, bidding and acceptance of the runway are carried out within a controllable framework.

In short, the quality and safety of plastic runway, in addition to strict implementation of standards, the more important thing is to do a good job of process control and quality supervision.

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