GB/T 35160.2-2017 in English

GB/T 35160.2—2017 Interpretation of the method for determining the bending strength of synthetic stone

Background and significance of the standard

GB/T 35160.2—2017 "Test methods for synthetic stone Part 2: Determination of bending strength" is an important standard formulated for the synthetic stone industry, which mainly stipulates the determination method of the bending strength of synthetic stone. The standard was issued in 2017, proposed by the China Building Materials Federation, and managed by the National Stone Standardization Technical Committee.

Standard framework and scope of application

This standard is Part 2 of GB/T 35160 "Test methods for synthetic stone", which mainly covers the following contents:

• Terms and definitions
• Test principle
• Instrument and equipment requirements
• Specimen preparation process
• Test steps and result calculation
• Test report requirements

Explanation of professional terms and practical applications

Flexural Strength: refers to the ability of a material to resist fracture under the action of bending moment, and is an important indicator for measuring the mechanical properties of synthetic stone.

Technical Evolution and Advantages of Standards

Compared with the old version of the standard, GB/T 35160.2—2017 has been optimized in the following aspects:

• Loading speed control: increased from $0.2\mathrm{MPa/s}$ to $(0.25\pm0.05)\mathrm{MPa/s}$ to reduce test errors.
• Sample preparation conditions: The drying temperature and time requirements for synthetic stones with different adhesive types have been refined.
• Result recording requirements: Detailed records of fracture locations and defects have been added to improve the reference value of the data.

Implementation suggestions and precautions

1. In actual operation, instruments and equipment should be selected in strict accordance with standard requirements and calibrated regularly to ensure measurement accuracy.
2. Pay attention to environmental control during sample preparation to ensure that temperature and humidity meet standard requirements.
3. When recording experimental data, special attention should be paid to whether the fracture location is within $15\%$ of the central area to ensure the validity of the test results.