Construction waterproof paints hazardous substances limit standard
2018-05-14 03:00:41
At present, waterproof coatings and waterproofing membranes are two types of waterproof materials widely used in waterproofing projects. Waterproof coatings are widely used in roofing, toilets, and underground waterproofing projects. In the past ten years, it has expanded into functional waterproofing areas such as bridges, tunnels, subways, water conservancy, reservoirs, and sewage treatment.
Its excellent waterproof performance, easy construction and other features make it attractive to the engineering community. However, in the production of waterproof coatings, some companies use tar and other toxic substances as solvents, and harmful substances are volatilized in the process of production and construction. As a result, workers are poisoned and killed every year. This not only seriously pollutes the environment but also jeopardizes production and construction. Personnel health.
Currently, there are no determination standards and applicable measurement methods for "non-tar" and "green" waterproof coatings sold on the market. Waterproof coating market, muddy sand, all kinds of fish and dragons mixed, good and bad, true and false hard to distinguish, the development of a unified national "construction of waterproof paint harmful substances" industry standards become a top priority.
A few days ago, the National Lightweight and Decorative Building Materials Standardization Technical Committee held an industry review meeting for the “Restriction of Hazardous Substances in Building Waterproof Coatings.†The meeting reviewed and passed the standard, and it is recommended that it be submitted to the National Development and Reform Commission for approval, promulgation, and implementation as soon as possible. In order to formulate the "Restriction of Hazardous Substances in Building Waterproof Coatings" industry standard, the unit responsible for drafting standards is the China National Construction Corporation Suzhou Waterproof Materials Research and Design Institute, the Building Materials Industry Technology Supervision Research Center, and the well-known domestic research institutes, quality inspection agencies and China. The Building Materials Inspection and Certification Center, Beijing Institute of Building Materials Science, Shanghai Academy of Building Sciences, and Shenzhen Institute of Building Science have widely collected water-repellent coatings of different types of production companies and waterproof markets on a nationwide basis. Systematic test verification to determine the technical indicators and applicable test methods in the "industrial limits for hazardous substances in architectural waterproof coatings".
In the test verification process, the same sample was found, and the test results of some technical indicators in different laboratories were quite different. In order to reduce the experimental error in the laboratory and improve the reproducibility of the test method, the test results can accurately reflect the content of harmful substances in the waterproof coating. The scientific research institutes and quality inspection agencies that participated in the test verification have met many times to analyze the test results. , Find out the reasons, from sampling, storage time and preparation to test conditions, operation details, calculation of test results, etc., list one by one, compare with each other, find differences, achieve unity, so that the five units participating in the test verification in the test method The maximum possible consistency is to ensure the accuracy and comparability of the test results and to provide a reliable scientific basis for standard setting.
Its excellent waterproof performance, easy construction and other features make it attractive to the engineering community. However, in the production of waterproof coatings, some companies use tar and other toxic substances as solvents, and harmful substances are volatilized in the process of production and construction. As a result, workers are poisoned and killed every year. This not only seriously pollutes the environment but also jeopardizes production and construction. Personnel health.
Currently, there are no determination standards and applicable measurement methods for "non-tar" and "green" waterproof coatings sold on the market. Waterproof coating market, muddy sand, all kinds of fish and dragons mixed, good and bad, true and false hard to distinguish, the development of a unified national "construction of waterproof paint harmful substances" industry standards become a top priority.
A few days ago, the National Lightweight and Decorative Building Materials Standardization Technical Committee held an industry review meeting for the “Restriction of Hazardous Substances in Building Waterproof Coatings.†The meeting reviewed and passed the standard, and it is recommended that it be submitted to the National Development and Reform Commission for approval, promulgation, and implementation as soon as possible. In order to formulate the "Restriction of Hazardous Substances in Building Waterproof Coatings" industry standard, the unit responsible for drafting standards is the China National Construction Corporation Suzhou Waterproof Materials Research and Design Institute, the Building Materials Industry Technology Supervision Research Center, and the well-known domestic research institutes, quality inspection agencies and China. The Building Materials Inspection and Certification Center, Beijing Institute of Building Materials Science, Shanghai Academy of Building Sciences, and Shenzhen Institute of Building Science have widely collected water-repellent coatings of different types of production companies and waterproof markets on a nationwide basis. Systematic test verification to determine the technical indicators and applicable test methods in the "industrial limits for hazardous substances in architectural waterproof coatings".
In the test verification process, the same sample was found, and the test results of some technical indicators in different laboratories were quite different. In order to reduce the experimental error in the laboratory and improve the reproducibility of the test method, the test results can accurately reflect the content of harmful substances in the waterproof coating. The scientific research institutes and quality inspection agencies that participated in the test verification have met many times to analyze the test results. , Find out the reasons, from sampling, storage time and preparation to test conditions, operation details, calculation of test results, etc., list one by one, compare with each other, find differences, achieve unity, so that the five units participating in the test verification in the test method The maximum possible consistency is to ensure the accuracy and comparability of the test results and to provide a reliable scientific basis for standard setting.