GB/T 3810.15-2026Test methods of ceramic tiles - Part 15: Determination of lead and cadmium given off by tiles (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

Drafting.

This document is Part 15 of GB/T 3810 "Test Methods for Ceramic Tiles". GB/T 3810 has already published the following parts.

---Part 1: Sampling and Acceptance Conditions;

---Part 2: Inspection of dimensions and surface quality;

---Part 3: Determination of water absorption, apparent porosity, apparent relative density and bulk density;

---Part 4: Determination of Fracture Modulus and Breaking Strength;

---Part 5: Determining the impact resistance of bricks using the coefficient of restitution;

---Part 6: Determination of the abrasion resistance depth of unglazed tiles;

---Part 7: Determination of the abrasion resistance of glazed tile surfaces;

---Part 8: Determination of Linear Thermal Expansion;

---Part 9: Determination of thermal shock resistance;

---Part 10: Determination of Moisture Swelling;

---Part 12: Determination of freeze resistance;

---Part 13: Determination of chemical resistance;

---Part 14: Determination of pollution resistance;

---Part 15: Determination of lead and cadmium leaching from ceramic bricks;

---Part 16: Determination of Small Color Differences;

---Part 18: Measurement of Light Reflectance Value (LRV);

---Part 20: Determination of deflection in the calculation of the radius of curvature of ceramic tiles.

This document supersedes GB/T 3810.15-2016 "Test Methods for Ceramic Tiles Part 15: Determination of Lead and Cadmium Leaching from Glazed Tiles", and is consistent with...

Compared with GB/T 3810.15-2016, apart from structural adjustments and editorial changes, the main technical changes are as follows.

a) The scope has been changed (see Chapter 1, Chapter 1 of the 2016 edition);

b) A "Terms and Definitions" section has been added (see Chapter 3);

c) The term "sample" has been changed (see Chapter 7, Chapter 6 of the 2016 edition).

This document is equivalent to ISO 10545-15:2021 "Ceramic tiles - Part 15: Determination of lead and cadmium leaching from ceramic tiles".

The following minimal editorial changes have been made to this document.

---To harmonize with existing standards, the standard title has been changed to "Test Methods for Ceramic Tiles - Part 15: Leaching of Lead and Cadmium from Ceramic Tiles".

Measurement.

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed by the China Building Materials Federation.

This document is under the jurisdiction of the National Technical Committee on Standardization of Building and Sanitary Ceramics (SAC/TC249).

Limited Company, Guangdong Jinpai Ceramics Co., Ltd., Foshan Quality and Metrology Supervision and Testing Center, Foshan Ceramics Research Institute Testing Co., Ltd., Marco Polo Holdings Co., Ltd., New Pearl Group Co., Ltd., Fujian Huatai Group Co., Ltd., and Mona Lisa Group Co., Ltd.

Limited Liability Company, Hangzhou Nobel Ceramics Co., Ltd., and Beijing Building Materials Testing and Research Institute Co., Ltd.

Introduction

The leaching of lead and cadmium in ceramic tiles is an important indicator for assessing the safety of ceramic tiles, and its standardization has attracted widespread attention both domestically and internationally.

In this regard, the ISO 10545 series of standards developed by the International Organization for Standardization (ISO) are standards for test methods of ceramic tiles, and my country has already addressed this issue.

The series of standards have been adapted for domestic use, and a corresponding national standard system, GB/T 3810 "Test Methods for Ceramic Tiles", has been established.

This document is Part 15 of GB/T 3810 "Test Methods for Ceramic Tiles", and aims to evaluate the safety of ceramic tiles. GB/T 3810 "Test Methods for Ceramic Tiles" the "Test Methods for Ceramic Tiles" consists of 18 parts.

---Part 1: Sampling and Acceptance Conditions. The aim is to establish a sampling inspection system for ceramic tiles.

---Part 2: Inspection of Dimensions and Surface Quality. The aim is to establish methods for inspecting the dimensions and surface quality of ceramic tiles to evaluate product quality.

Product appearance quality.

---Part 3: Determination of water absorption, apparent porosity, apparent relative density, and bulk density. The aim is to establish indicators such as water absorption rate for ceramic tiles.

The standard testing method facilitates the classification of ceramic tiles.

---Part 4: Determination of Modulus of Fracture and Breaking Strength. The aim is to establish methods for testing the mechanical properties of ceramic tiles to evaluate their performance.

Mechanical properties of bricks.

The resistance of ceramic tiles to damage.

---Part 6: Determination of Abrasion Resistance Depth of Unglazed Tiles. The aim is to establish a method for testing the abrasion resistance depth of unglazed tiles to evaluate their resistance to wear.

Ability to resist wear.

---Part 7: Determination of Abrasion Resistance of Glazed Tile Surfaces. The aim is to establish a method for testing the abrasion resistance of glazed tile surfaces to evaluate the performance of glazed tiles.

The ability of bricks to resist wear.

---Part 8: Determination of Linear Thermal Expansion. The aim is to establish a method for testing the linear thermal expansion coefficient of ceramic tiles to evaluate their performance.

High temperature stability.

---Part 9: Determination of Thermal Shock Resistance. The aim is to establish a testing method for the thermal shock resistance of ceramic tiles to evaluate their ability to withstand rapid thermal shock.

Resistance to damage under extreme temperature changes.

---Part 10: Determination of Moisture Expansion. The aim is to establish a method for testing the moisture expansion of ceramic tiles to evaluate their resistance to deformation.

ability.

---Part 11: Determination of Glaze Cracking Resistance of Glazed Tiles. The aim is to establish a testing method for the glaze cracking resistance of ceramic tiles in order to evaluate the performance of ceramic tiles.

Durability.

---Part 12: Determination of frost resistance. The aim is to establish a method for testing the frost resistance of ceramic tiles to evaluate their low-temperature stability.

Qualitative analysis.

---Part 13: Determination of Chemical Resistance. The aim is to establish a testing method for the chemical resistance of ceramic tiles in order to evaluate the performance of ceramic tiles.

The brick's resistance to chemical corrosion.

---Part 14: Determination of Stain Resistance. The aim is to establish a testing method for the stain resistance of ceramic tiles to evaluate their resistance to staining.

staining ability.

Assess the safety of ceramic tiles.

---Part 16: Determination of Small Color Differences. The aim is to establish a testing method for small color differences between monochrome ceramic tiles, in order to evaluate the quality of ceramic tiles.

Appearance quality.

---Part 18: Determination of Light Reflectance Value (LRV). The aim is to establish a method for testing the light reflectance value of ceramic tiles to evaluate their properties.

The light reflectivity of bricks.

---Part 20: Determination of Deflection in the Calculation of the Radius of Curvature of Ceramic Tiles. The aim is to establish a method for testing and calculating the deflection of ceramic tiles.

The radius of curvature is determined to provide a basis for evaluating the flatness of ceramic tiles.

This revision of GB/T 3810.15 improves the scope of test methods and the requirements for ceramic tile sampling, ensuring the accuracy of test results.

Sexuality and scientific rigor.

Ceramic Tile Test Methods Part 15: Determination of Lead and Cadmium Leaching from Ceramic Tiles

1 Scope

This document describes a method for determining the amount of lead and cadmium leached from the surface of ceramic tiles.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

Note. GB/T 6682-2008 Specifications and test methods for water used in analytical laboratories (ISO 369:1987, MOD) Note. GB/T 12804-2011 Graduated Cylinders for Laboratory Glassware (ISO 4788:2005, NEQ)

3 Terms and Definitions

This document does not contain any terms or definitions that need to be defined.

4 Principles

The surface of the ceramic brick is brought into contact with an acetic acid solution, and the content of lead and cadmium dissolved in the solution is determined using an appropriate method.

5 Reagents