NACE 21428-2018 PDF Download

The NACE 21428-2018 standard provides a comprehensive overview of the use of corrosion inhibiting admixtures in reinforced concrete. The report aims to deliver up-to-date information to specifiers, designers, and corrosion control personnel to effectively control the corrosion of conventional reinforcing steel in hydraulic cement concrete.

The report covers various types of materials used as corrosion inhibiting admixtures, including their selection and evaluation, as well as their proportioning into freshly mixed concrete. It also discusses the impact of these admixtures on both fresh and hardening/hardened concrete. While corrosion inhibiting admixtures can delay corrosion initiation and extend the propagation period, the report acknowledges that the corrosion of reinforcing steel is influenced by multiple factors, including the service environment, concrete quality, exposure conditions, presence of cracks, and reinforcing steel cover.

It is important to note that the scope of this document is limited to admixed corrosion inhibitors used in reinforced concrete. It does not cover migrating corrosion inhibitors applied to hardened concrete or other types of corrosion inhibiting substances.