European foreword

This document (EN 12350‑7:2019) has been prepared by Technical Committee CEN/TC 104 “Concrete and related products”, the secretariat of which is held by SN.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2019, and conflicting national standards shall be withdrawn at the latest by December 2019.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 12350‑7:2009.

The results of a laboratory inter-comparison, in part funded by the EC under Measurement and Testing Programme, Contract MAT1-CT-94-0043 which investigated these two methods of measuring air content, did not find significant difference between them. However, it was found in this programme that the use of an internal vibrator to compact specimens of air entrained fresh concrete should only be done with caution, if loss of entrained air is to be avoided.

The determination of the aggregate correction value for the two methods has been included in normative Annexes A and B.

The method of calibrating the two types of apparatus has been included in normative Annexes C and D.

This standard is one of a series on testing concrete.

EN 12350 , Testing fresh concrete, consists of the following parts:

— Part 1: Sampling and common apparatus
— Part 2: Slump test
— Part 3: Vebe test
— Part 4: Degree of compactability
— Part 5: Flow table test
— Part 6: Density
— Part 7: Air content – Pressure methods
— Part 8: Self-compacting concrete – Slump-flow test
— Part 9: Self-compacting concrete – V-funnel test
— Part 10: Self-compacting concrete – L-box test
— Part 11: Self-compacting concrete – Sieve segregation test
— Part 12: Self-compacting concrete – J-ring test

The following amendments have been made to the 2009 edition of this standard:

a) editorial revisions;
b) reference to common apparatus and specification given in EN 12350‑1.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

BS EN 12350-7:2019

Testing fresh concrete - Air content. Pressure methods

Current

Published:

31 Jul 2019