Bs En 12390-2:2019 [2021]
Specimens must remain in the molds for at least 16 hours but no longer than 3 days. During this time, they must be protected from shock, vibration, and dehydration. The temperature during this initial phase must be maintained between 20°C and 25°C in temperate climates, or higher in hot climates if specified. Covering the molds with plastic sheeting or wet burlap is a common practice to prevent moisture loss. Standard Curing
Once demoulded, the specimens enter the main curing phase. This ensures hydration continues uninterrupted. bs en 12390-2:2019
After removal from the molds (demolding), the specimens must be cured in water or in a mist room. If water curing is used, the specimens must be fully submerged in a tank. The water temperature must be maintained at a constant 20°C (± 2°C). If a mist room is used, the relative humidity must be kept above 95%. This controlled environment ensures that the hydration of the cement continues optimally, allowing the concrete to gain strength at a predictable rate. Marking and Documentation Specimens must remain in the molds for at
: Specimens are typically cast in steel or rigid moulds that meet specific dimensional tolerances. Filling and Compaction Covering the molds with plastic sheeting or wet
Uploaded by. ... Scope: Defines the scope of the standard, covering test specimen molding and curing for strength tests. Foreword:
Testing Hardened Concrete – Part 2: Making and Curing Specimens for Strength Tests