GB/T 24312-2022 English PDF

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GB/T 24312-2022: Cement-bonded particleboard
Status: Valid

GB/T 24312: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 24312-2022	269	Add to Cart	3 days	Cement-bonded particleboard	Valid
GB/T 24312-2009	479	Add to Cart	3 days	Cement bonded particleboard	Obsolete

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GB 18580   GB/T 19367   GB/T 19536   GB/T 45245   GB/T 24311   

Basic data

Standard ID: GB/T 24312-2022 (GB/T24312-2022)
Description (Translated English): Cement-bonded particleboard
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: B70
Classification of International Standard: 79.060.20
Word Count Estimation: 14,160
Date of Issue: 2022-10-14
Date of Implementation: 2023-05-01
Older Standard (superseded by this standard): GB/T 24312-2009
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 24312-2022: Cement-bonded particleboard

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Cement-bonded particleboard ICS 79.060.20 CCSB70 National Standards of People's Republic of China Replacing GB/T 24312-2009 Cement particle board (ISO 8336.2017,Fibre-cementflatsheet- Published on 2022-10-12 2023-05-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" drafted. This document replaces GB/T 24312-2009 "Cement Particleboard", compared with GB/T 24312-2009, except for structural adjustment and editorial In addition to the changes, the main technical changes are as follows. a) delete the classification (see Chapter 4 of the.2009 edition); b) The commonly used nominal thickness is added (see 4.1.1); c) The degree of warpage is deleted (see Table 1 of the.2009 edition); d) increased flatness (see Table 1); e) Product classification is deleted (see 5.1, Table 3 and Table 4 of the.2009 edition); f) Density requirements are deleted (see Table 4 of the.2009 edition); g) The requirements for density deviation, smoke density and smoke toxicity in the board are added (see Table 3); h) Changed the requirements for combustion performance (see Table 3, Table 4 of the.2009 edition); i) deleted statistical calculations (see 6.1 of the.2009 edition); j) The test methods for length, width, thickness, verticality and edge straightness have been changed (see 5.1, 7.3 of the.2009 edition); k) The sampling and test pieces of physical and chemical properties have been changed (see Table 4, Table 5 of the.2009 edition); l) The test methods for density deviation, smoke density and smoke toxicity in the board are added (see 5.3.3); m) Changed the inspection rules (see Chapter 6, Chapter 8 of the.2009 edition). This document is drafted with reference to ISO 8336.2017 "Specifications and test methods for fiber-reinforced cement slab products". Equivalent. Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by the State Forestry and Grassland Administration. This document is under the jurisdiction of the National Standardization Technical Committee for Wood-based Panels (SAC/TC198). This document is drafted by. Nanjing Forestry University, Jilin Forestry Industry Baishan Wood-based Panel Co., Ltd., Anhui University of Technology, Dehua Rabbit Decoration New Materials Co., Ltd., Zhejiang Jufeng Wood Industry Co., Ltd., Jiangsu Jiajiajia New Materials Group Co., Ltd., Nanjing University of Technology. The main drafters of this document. Wang Xinzhou, Liang Xingyu, Zhang Hao, Zhang Fafang, Zhan Xianxu, Yue Kong, Zhu Zhihua, Ji Jianqiang, Liu Hongye, Xie Xuqin, Deng Yuhe and Lu Chenglong. The previous versions of this document and its superseded documents are as follows. ---First published in.2009 as GB/T 24312-2009; ---This is the first revision. Cement particle board

1 Scope

This document defines the terms and definitions of cement particle board, specifies the requirements, test methods and inspection rules, marking, packaging and packaging, transportation and storage. This document applies to non-load-bearing cement particle boards for construction.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. GB/T 2828.1-2012 Counting Sampling Inspection Procedures Part 1.Lot-by-Lot Inspection Sampling Retrieved by Acceptance Quality Limit (AQL) plan GB/T 4897-2015 Particleboard GB 8624-2012 Classification of combustion performance of building materials and products GB/T 8627-2007 Test method for smoke density of burning or decomposing building materials GB/T 17657-2013 Test methods for physical and chemical properties of wood-based panels and veneer wood-based panels GB/T 18259-2018 Terms for wood-based panels and their surface decoration GB/T 19367 Dimensional determination of wood-based panels GB/T 20285-2006 Material Smoke Toxicity Hazard Classification

3 Terms and Definitions

The terms and definitions defined in GB/T 18259-2018 and the following terms and definitions apply to this document. 3.1 After mixing shavings, cement and other additives with water in a certain proportion, it is made by paving, pressurizing, drying and curing. plate. [Source. GB/T 18259-2018, 3.3.4] 3.2 The phenomenon that the four corners or edges of the wood-based panel are missing or damaged due to improper mechanical or human operation. [Source. GB/T 18259-2018, 2.46] 3.3 partial softness Local looseness caused by poor paving or poor bonding. 3.4 Partial breakage or fracture marks in the plate. ......

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