GB/T 33040-2016Identification method of heat-treated wood (English PDF)
热处理木材鉴别方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 13, 2016
Implementation date
May 1, 2017
Scope
GB/T 33040-2016 is the English-translated version of 热处理木材鉴别方法.
GB/T 33040-2016 is the Chinese standard "Identification method of heat-treated wood". Its scope clause reads: This standard specifies the terminology and definition of heat treated wood, inspection methods, identification indicators, determination and identification of the report.
This standard applies to indoor and outdoor use of heat treatment of wood and its products identification, does not contain veneer. Its clauses include normative reference documents; terms and definitions; detection method.
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Document preview — GB/T 33040-2016
National Standard of the People's Republic of China
- ICS
- 79.040
- Classification
- B 60
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 normative reference documents
- 3 terms and definitions
- 4 detection method
1 Scope
This standard specifies the terminology and definition of heat treated wood, inspection methods, identification indicators, determination and identification of the report.
This standard applies to indoor and outdoor use of heat treatment of wood and its products identification, does not contain veneer.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
General rules for experimental methods of wood physical mechanics GB/T Method for determination of moisture content of wood GB/T General rules for identification of wood GB/T 29894
LY/T 1788 Wood property terms
3 terms and definitions
LY/T 1788 and the following terms and definitions apply to this document.
3.1 Heat-treated wood
Carbonized wood heat-treatedwood
In 160 °C ~ 230 °C under low oxygen environment, for a certain time to deal with the wood.
3.2 Wood color
The color of the wood under the natural light. The color of the wood is characterized by the CIEL * a * b * color system of the International Commission on Illumination.
3.3 Color colordifference
The color difference between the two samples, according to the International Commission on Illumination of the CIEL * a * b * color system calibration color and calculated the two
Color difference between sample samples.
3.4 Moisture absorption equilibrium moisture content
Wood in a certain temperature and relative humidity in the environment after the suction of water, the final stable water content.
4 detection method
4.1 sampling and specimen production
4.1.1 sampling
The size of the sample shall be not less than 350mm in length, not less than 80mm in width, and not less than 10mm in thickness. From the same piece of sample […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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