GB/T 46539-2025Geosynthetics - Test for UV ageing resistance - Fluorescent UV lamp method (English PDF)

1 Scope

This document describes the test method for UV aging of geosynthetics in a fluorescent UV aging tester and the properties before and after aging.

The determination.

This document applies to all types of geosynthetics.

Note. The application and limitations of this method are detailed in Appendix A.

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.

GB/T 3923.1 Textiles - Tensile properties of fabrics - Part 1.Determination of breaking strength and elongation at break (strip method)

GB/T 13760 Sampling and Specimen Preparation of Geosynthetics

GB/T 15788 Geosynthetics - Tensile Testing Method for Wide Strips

GB/T 17689 Geosynthetics - Plastic Geogrids

GB/T 19466.6 Differential Scanning Calorimetry (DSC) for Plastics – Part 6.Oxidation Induction Time (Isothermal OIT) and Oxidation Induction

Temperature (Dynamic OIT) Measurement

3 Terms and Definitions

The following terms and definitions apply to this document.

4 Principles

Exposure tests were conducted on samples in an artificially accelerated aging device with a controlled environment to simulate ultraviolet radiation, heat, and humidity under natural conditions.

The aging effect of water on materials. This is achieved by measuring relevant properties (such as tensile strength, elongation, etc.) of the samples before and after artificially accelerated aging and calculating...

Its performance retention rate is used to characterize the material's resistance to ultraviolet aging. […]