Bs En 12390-2:2019 _verified_ -

The concrete must be filled in layers to ensure full density without segregation. Acceptable compaction methods include:

: Specimens remain in their moulds for 16 hours to 3 days at a temperature of in hot climates), protected from shock and dehydration. bs en 12390-2:2019

: Standardizing preparation ensures that variations in test results are due to the concrete mix itself, not how the specimen was handled. The concrete must be filled in layers to