Foreword

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The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO document should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

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This document was prepared by Technical Committee ISO/TC 71, Concrete, reinforced concrete and pre-stressed concrete, Subcommittee SC 3, Concrete production and execution of concrete structures.

This second edition cancels and replaces the first edition (ISO 12439:2010), which has been technically revised.

The main changes are as follows:

— addition of some new normative references;
— addition of the definition of water types;
— inclusion of requirements regarding radioactive testing (subclause 4.3.4).

Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.

ISO 12439:2025

Mixing water for concrete

Current

Published:

6 Mar 2025

1 Scope