Crucially, the standard distinguishes between two types of curing environments that can be used depending on the objective of the test:
| Aspect | BS EN 12390-2:2009 | BS EN 12390-2:2019 | |--------|--------------------|--------------------| | | Specified materials (metal, rigid plastic) | More detailed requirements for mould rigidity, dimensional tolerance, and re-use limits. | | Compaction methods | Vague guidance on rodding, vibration, etc. | Clarified compaction energy and process, especially for different consistence classes (slump classes S1 to S5). | | Surface finish | Minimal guidance. | Added requirement to record surface flatness deviation. | | Curing temperature | 20°C ± 2°C for water tanks. | Tightened to 20°C ± 1°C for sensitive applications (e.g., high-strength concrete >80 MPa). | | Transport of fresh specimens | Not detailed. | New clause on minimizing disturbance, vibration, and temperature change during transport from batching to lab. | | Demoulding time | 24 hours ± 4 hours typical. | More prescriptive: 24 hours ± 2 hours unless otherwise agreed, with justification for early demoulding. | | Curing records | Basic temperature checks. | Mandatory logging of temperature and relative humidity at defined intervals (every 4 hours if automated, or at least twice daily if manual). | bs en 12390-2:2019
It does not specify or require a "solid paper" product as part of its technical procedures for making or curing test cubes or cylinders BSI Knowledge Crucially, the standard distinguishes between two types of
BS EN 12390-2:2019 provides the definitive framework for the preparation of concrete test specimens. Its strict requirements for temperature control and curing duration ensure that the construction industry has reliable data on concrete performance. Non-compliance with this standard typically results in invalid strength tests, posing significant risks to construction projects. | | Surface finish | Minimal guidance
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