Bs En 12390-2:2019 Jun 2026

The standard mandates that moulds must be rigid, non-absorbent, and dimensionally accurate to within specified tolerances. For cubes, the most common specimen in the UK, the internal dimensions must be precise. Sampling fresh concrete must follow BS EN 12350-1, ensuring a representative batch.

: Specifies the requirements for molds, compacting equipment (such as vibrating tables), and finishing tools like floats. bs en 12390-2:2019

: The standard allows for multiple methods but warns against over-vibration, which can cause the loss of entrained air and lead to segregation. For hand compaction, it typically suggests 25 strokes per layer to remove entrapped air without disturbing entrained air. Initial Curing The standard mandates that moulds must be rigid,

: Specimens remain in their moulds for 16 hours to 3 days at a temperature of in hot climates), protected from shock and dehydration. : Specifies the requirements for molds, compacting equipment