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GB/T 41493.1-2022Accelerated life test method of mixed metal oxide anodes for cathodic protection - Part 1: Application in concrete (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

April 15, 2022

Implementation date

November 1, 2022

Scope

GB/T 41493.1-2022 (Accelerated life test method of mixed metal oxide anodes for cathodic protection - Part 1: Application in concrete) is available as an English-translated PDF.

GB/T 41493.1-2022 is the Chinese standard "Accelerated life test method of mixed metal oxide anodes for cathodic protection - Part 1: Application in concrete".

Its scope clause reads: This document specifies an accelerated life test method for mixed metal oxide anodes for cathodic protection in concrete environments. accelerated life test The test results can be used to compare the durability of different metal oxide anode materials and to evaluate whether the anode meets the design pre-design at rated current output. longevity requirements.

This document is also applicable to other systems of impressed current anodes embedded in concrete, which can be fixed with different any shape of the anode. Its clauses include terms and definitions.

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Document preview — GB/T 41493.1-2022

National Standard of the People's Republic of China

Classification: H 25

Issued by: State Administration for Market Regulation, China National Standardization Administration

Introduction
1 Scope
2 Normative references

1 Scope

This document specifies an accelerated life test method for mixed metal oxide anodes for cathodic protection in concrete environments. accelerated life test

The test results can be used to compare the durability of different metal oxide anode materials and to evaluate whether the anode meets the design pre-design at rated current output.

longevity requirements.

This document is also applicable to other systems of impressed current anodes embedded in concrete, which can be fixed with different any shape of the anode.

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.

Note. GB/T 17671-2021 Test method for strength of cement mortar (ISO method) (ISO 679.2009, MOD)

Note. GB/T 10123-2022 Basic terms and definitions for corrosion of metals and alloys (ISO 8044.2020, IDT)

3 Terms and Definitions

Terms and definitions defined in ISO 8044 and the following apply to this document.

3.1 mixed metal oxide anode

The auxiliary anode for impressed current cathodic protection is formed by coating a mixed metal oxide conductive coating on a titanium substrate.

Note. The most commonly used coating of metal oxide anodes for cathodic protection is a mixture of iridium oxide and tantalum oxide, and the specific composition of the coating can vary.

3.2 accelerated life

Lifetime of mixed metal oxide anodes in accelerated tests at high current densities in the specified test medium.

Note. The total test time before the failure of the mixed metal oxide anode is taken as the accelerated life.

3.3 Slot pressure celvoltage

The voltage difference between the anode and cathode in a single electrolytic cell (cell).

3.4 charge density

The product of the applied current density and the operating time is applied. […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 27 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 679.2009 · ISO 8044.2020

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