Bs En 12390-2:2019

The method depends on the consistency (slump) of the concrete:

Critical requirement: Do not over-vibrate. Over-vibration causes aggregate settlement to the bottom and a weak laitance layer on top. Do not under-vibrate—this leaves voids.

The standard is rigorous in its details. Deviations from these specifications can render a test result invalid. bs en 12390-2:2019

For a ready-mix concrete supplier or a contractor on a major infrastructure project (e.g., HS2, Crossrail, or National Highways schemes):

Adherence to BS EN 12390-2:2019 is vital for structural integrity and legal compliance. The method depends on the consistency (slump) of

BS EN 12390-2:2019 does not work in isolation. It is part of a family:

| Standard | Title | Role | |----------|-------|------| | BS EN 12390-1 | Shape, dimensions, and tolerances of moulds | Specifies the moulds used in Part 2. | | BS EN 12390-3 | Compressive strength of test specimens | The test method after curing per Part 2. | | BS EN 12390-4 | Determination of compressive strength – non-destructive (rebound hammer) | Optional supplementary. | | BS EN 12350-4 | Fresh concrete – Degree of compactability | Helps determine compaction method for Part 2. | | BS 1881-108 | (Partly superseded) | Old UK standard – still referenced but not current. | Critical requirement: Do not over-vibrate

For anyone working in concrete testing, keeping the entire BS EN 12390 series on hand is essential.