BS EN 12350-7:2009 - Testing fresh concrete. Air content. Pressure methods – BSI British Standards

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BS EN 12350-7:2009

Testing fresh concrete. Air content. Pressure methods

Status : Current   Published : May 2009



BS EN 12350-7:2009 Testing fresh concrete. Air content. Pressure methods

The suitability of any fresh concrete should be tested before it sets. BS EN 12350-7 describes two methods for testing air content of compacted fresh concrete, made with normal weight or relatively dense aggregate of maximum size up to 63 mm.

The two test methods both use apparatus which employ the principle of Boyle-Mariotte's law. The two methods are:

Water column method
This method is when water is introduced to a predetermined height above a sample of compacted concrete. This concrete has a known volume and is in a sealed container and a predetermined air pressure is applied over the water. The reduction in volume of the air in the concrete sample is measured by observing the amount by which the water level is lowered.

Pressure gauge method
This method includes a known volume of air at a known pressure is merged in a sealed container with the unknown volume of air in the concrete sample.

These methods do not apply to concretes made with lightweight aggregates, air cooled blast-furnace slag, or aggregates with high porosity. This is because of the magnitude of the aggregate correction factor, compared with the entrained air content of the concrete.

Who will find BS EN 12350-7 useful?

  • Anyone working with aggregates/concrete
  • Civil engineers
  • Structural engineers
  • Manufacturers of concrete/concrete products
  • Testers of concrete

BS EN 12350-7:2009 replaces BS EN 12350-7:2000, which is now withdrawn.

Contents of BS EN 12350-7:
1 Scope
2 Normative references
3 Principles
4 Water column method
5 Pressure gauge method
6 Calculation and expression of results
7 Test report
8 Precision
Annex A (Normative) Aggregate correction factor – water column method
Annex B (Normative) Aggregate correction factor – pressure gauge method
Annex C (Normative) Calibration of apparatus – water column method
Annex D (Normative) Calibration of apparatus – pressure gauge method

See more standards on testing concrete


Standard NumberBS EN 12350-7:2009
TitleTesting fresh concrete. Air content. Pressure methods
Publication Date31 May 2009
Cross ReferencesEN 12350-1, EN 12350-6
ReplacesBS EN 12350-7:2000
International RelationshipsEN 12350-7:2009
Draft Superseded By08/30164896 DC
DescriptorsConcretes, Cement and concrete technology, Compacting, Determination of content, Air content determination, Pressure testing, Compaction tests, Test equipment
Title in FrenchEssais pour béton frais. Teneur en air. Méthode de la compressibilité
Title in GermanPrüfung von Frischbeton. Luftgehalte. Druckverfahren
ISBN978 0 580 58794 8
File Size345.5 KB

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