GB/T 44309-2024Porcelain slab (English PDF)

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 for standardization documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by China Building Materials Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Building Sanitary Ceramics (SAC/TC249). This document was drafted by: China Building Sanitary Ceramics Association, Delifeng Smart Home Co., Ltd., Guangdong Dongpeng Holdings Co., Ltd., Guangdong Xinyansu Smart Home Technology Co., Ltd., Fujian Jinjiang Haoshan Building Materials Co., Ltd., Xianyang Ceramic Research and Design Institute Co., Ltd., Foshan Foshan Quality Metrology Supervision and Inspection Center, Foshan Gaoming Best Ceramics Co., Ltd., Foshan Oushennuo Ceramics Co., Ltd., Fujian Huatai Group Group Co., Ltd., Marco Polo Holdings Co., Ltd., New Pearl Group Co., Ltd., Guangdong Gold Medal Ceramics Co., Ltd., Hangzhou Nobel Ceramics Co., Ltd., OPPEIN Home Furnishing Group Co., Ltd., China National Testing Holding Group Shaanxi Co., Ltd., Hubei Kaixuan Ceramics Porcelain Co., Ltd., Hubei Dangyang Haoshan Building Materials Co., Ltd., Foshan Shiwan Yingpai Ceramics Co., Ltd., Jinjiang Tengda Ceramics Co., Ltd., Foshan Sanshui Hongyuan Ceramics Enterprise Co., Ltd., Hebei Lingbiao Technology Development Co., Ltd., Ningbo Rail Transit Group Co., Ltd., Shanxi Fangzhi Yuan Ceramic Products Inspection Co., Ltd., Hebei Huili Ceramics Co., Ltd., Guangdong Zhongpeng Thermal Energy Technology Co., Ltd., Foshan Zhang Brothers Building Materials Co., Ltd., Foshan Taoying New Materials Co., Ltd., Foshan Jinduo Ceramics Co., Ltd., Guangdong Owenlai Ceramics Co., Ltd., Emei Meishan Jin Ceramics Industry Development Co., Ltd., Guangdong Xiangfang Ceramics Co., Ltd., Linyi Dajiangjun Building Ceramics Co., Ltd., Jiangxi Golden Triangle Ceramics Co., Ltd. Co., Ltd., Henan Jiabei Technology Co., Ltd., and Tangshan Customs Comprehensive Technical Service Center. The main drafters of this document are. Miao Bin, Wang Bo, Wu Qingliang, Zhang Dailan, Chen Shiqing, Zeng Junhua, Lan Xuyuan, Lu Hongkui, Zhang Shicha, Zhang Yihan, Liu Xiaoyun, Di Ping, Ou Zhuokun, Huo Jianrong, Meng Zhenming, Chen Lanbo, Wu Yuyi, Wang Yiping, Ma Jie, Huang Ye, Dong Jin, Li Ying, Shao Jia, Jiao Hongbin, Zhang Zhongbao, Su Huangshen, Liu Chang, Huang Baoshou, Liang Tongwei, Xue Jian, Zhao Cheng, Yan Ling, Jing Liang, Ji Jinshan, Su Bin, Lai Ridong, Zhang Yundang, Quan Chunhui, Li Huiting, Huang Dayang, Zhang Yurong, Liu Liyan, Feng Liguo, Jin Siping, Yang Zhonglei, Li Wenjie. Ceramic rock slabs

1 Scope

GB/T 44309-2024 is the Chinese standard for porcelain slab, the large-format sintered panel that has taken over Chinese kitchen worktops, wall cladding and furniture surfaces in the space of a few years. It is a difficult product to standardise because its selling points are exactly its weak points: the slabs are made up to three metres long and as little as six millimetres thick, so flatness, edge straightness and the ability to survive handling and fabrication matter as much as the classical ceramic properties. The standard sets the classification and designation, then the requirements: the dimensions and permissible deviations including flatness, warpage and edge straightness, the water absorption, the modulus of rupture and breaking strength, the impact and abrasion resistance, the thermal shock, frost and stain resistance, the chemical resistance, the colour consistency and appearance quality, and the limits on radioactivity and on released substances for surfaces in food contact. It then gives the test methods, the inspection rules and the marking, packaging, transport and storage. It took effect on 23 August 2024.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document.

GB/T 191 Pictorial markings for packaging, storage and transportation

GB/T 3810.2 Test methods for ceramic tiles Part

GB/T 5166 Determination of elastic modulus of sintered metal materials and cemented carbides

GB 6566 Limits of radionuclides in building materials

GB/T 9195 Terminology and classification of building sanitary ceramics

GB/T 17671 Test method for strength of cement mortar (ISO method)

GB/T 39156-2020 Technical requirements and test methods for large-size ceramic panels

JB/T 8337-2012 Ordinary abrasive garnet JC/T 2172 Test method for elastic modulus, shear modulus and Poisson's ratio of fine ceramics - Pulse excitation method

3 Terms and definitions

The terms and definitions defined in GB/T 9195 and GB/T 4100-2015 and the following apply to this document.

4 Determination of modulus of rupture and breaking strength

GB/T 3810.5 Test methods for ceramic tiles Part

5 Determination of the impact resistance of tiles by coefficient of restitution

GB/T 3810.7 Test methods for ceramic tiles Part

7 Determination of surface abrasion resistance of glazed tiles

GB/T 3810.8 Test methods for ceramic tiles Part

8 Determination of linear thermal expansion

GB/T 3810.9 Test methods for ceramic tiles Part

9 Determination of thermal shock resistance

GB/T 3810.10 Test methods for ceramic tiles Part

10 Determination of moisture expansion

GB/T 3810.11 Test methods for ceramic tiles Part

11 Determination of glaze crack resistance of glazed tiles

GB/T 3810.12 Test methods for ceramic tiles Part

12 Determination of frost resistance

GB/T 3810.13 Test methods for ceramic tiles Part

13 Determination of chemical resistance

GB/T 3810.14 Test methods for ceramic tiles Part

14 Determination of stain resistance

GB/T 3810.15 Test methods for ceramic tiles Part

15 Determination of lead and cadmium leaching from glazed tiles

GB/T 4100-2015 Ceramic tiles

GB/T 4340.1 Vickers hardness test for metallic materials Part