ISO 12696:2022 混凝土中钢筋的阴极保护
标准编号：ISO 12696:2022
中文名称：混凝土中钢筋的阴极保护
英文名称：Cathodic protection of steel in concrete
发布日期：2022-05
标准范围
本文件规定了新结构和现有结构中水泥基混凝土中钢筋阴极保护的性能要求。它涵盖建筑和土木工程结构，包括嵌入混凝土中的碳钢钢筋和预应力钢筋。适用于无涂层钢筋和有机涂层钢筋。它不适用于含有导电纤维（例如碳或钢）的钢筋混凝土。本文件适用于嵌入建筑物或结构的大气暴露、掩埋、浸没和潮汐元素中的钢。本文件仅适用于混凝土中钢筋的阴极保护应用，其设计意图是，并且可以证明其满足第8.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.2.1.1.1.1.1.1.1.1.1.1。6.这要求为拟保护的结构的所有部分提供6.3中规定的足够性能监测系统，以评估满足8.6中标准的程度。本文件不适用于用于修补以减少“初期阳极”影响的电镀阳极或系统。本文件也不适用于任何形式的阴极保护系统或其他电化学处理，这些系统或电化学处理不能满足8.6的要求，或未配备评估是否满足8.6中规定的保护标准所必需的性能监测系统（见6.3）。注意1.附件A介绍了阴极保护的原理及其在混凝土中钢筋的应用。注意2.本文件虽然不是专门针对除混凝土外的任何电解液中的钢的阴极保护，但可应用于其他水泥基材料中的钢的阴极保护，例如20世纪早期的钢框架砌体、砖和陶土覆盖建筑中的钢。在此类应用中，需要在阴极保护的设计、材料和安装方面对这些结构进行额外考虑；然而，本文件的要求可适用于这些系统。
This document specifies performance requirements for cathodic protection of steel in cement-based concrete, in both new and existing structures. It covers building and civil engineering structures, including carbon steel reinforcement and prestressed reinforcement embedded in the concrete. It is applicable to uncoated steel reinforcement and to organic-coated steel reinforcement. It is not applicable to reinforced concrete containing electrically conductive fibres (e.g. carbon or steel).This document applies to steel embedded in atmospherically exposed, buried, immersed and tidal elements of buildings or structures.This document is only applicable to the applications of cathodic protection to steel in concrete which are designed with the intention to, and can be demonstrated to, meet the criteria of protection specified in 8.6. This requires the provision of sufficient performance monitoring systems as specified in 6.3 to all parts of the structure intended to be protected, in order to assess the extent to which the criteria in 8.6 are met.This document does not apply to galvanic anodes or systems applied into patch repairs to reduce the effects of ‘incipient anodes’. This document does also not apply to any form of cathodic protection systems or other electrochemical treatments that either cannot meet the requirements of 8.6 or are not provided with the performance monitoring systems (see 6.3) that are necessary to assess whether the criteria of protection specified in 8.6 are met.NOTE 1 Annex A gives guidance on the principles of cathodic protection and its application to steel in concrete.NOTE 2 This document, while not specifically intended to address cathodic protection of steel in any electrolyte except concrete, can be applied to cathodic protection of steel in other cementitious materials such as are found, for example, in early 20th century steel-framed masonry, brick and terracotta clad buildings. In such applications, additional considerations specific to these structures are required in respect of design, materials and installation of cathodic protection; however, the requirements of this document can be applied to these systems.
标准预览图
