Bs En 12390-2:2019 Instant

BS EN 12390-2:2019 the British and European standard that defines the procedures for making and curing concrete specimens for strength tests

1. Daily temperature and RH logs for storage areas and curing tanks.
2. Mould inspection records – each mould identified with a unique ID and calibration due date.
3. Compaction method log – for each specimen batch, note whether rodding or vibration was used, and the key parameters (number of strokes, vibration frequency/amplitude check).
4. Demoulding time record – accurate to the nearest 15 minutes.
5. Transport control log – if specimens are moved between sites, record the time and ambient conditions during transport.

Compacting Tools: These can include internal (poker) vibrators, vibrating tables, or manual compacting rods/bars. Trowels/Floats: Used for mandatory surface leveling. 3. Procedural Methodology Specimen Preparation and Filling bs en 12390-2:2019

Every specimen must be clearly and indelibly marked so that it can be traced back to its specific batch, location in the structure, and date of manufacture. Accurate record-keeping is a requirement of the standard, including details of the sampling procedure, the compaction method used, and the duration and conditions of the curing period. Differences Between Laboratory and Site Curing BS EN 12390-2:2019 the British and European standard

Step 6: Demoulding

• Typically performed 24 hours ± 2 hours after casting.
• If demoulding earlier (e.g., 16 hours for rapid-strength concrete), you must justify that the specimen will not be damaged. For later demoulding (e.g., 48 hours), the initial storage must still maintain moisture.
• On demoulding, mark each specimen indelibly with the cast date, batch ID, and age of test (e.g., 7, 28, or 90 days). Do not use stickers – they fall off in water curing tanks.

Many laboratories are now using digital barcode tracking linked to temperature sensors to automate compliance with the 2019 version. Daily temperature and RH logs for storage areas

Demolding: Careful removal is required to avoid edge damage, which can weaken the specimen during a compression test. 4. Final Curing Conditions

BS EN 12390-2:2019 is the definitive British and European standard for making and curing concrete test specimens. Published by the British Standards Institution (BSI), it ensures that cubes, cylinders, and prisms are prepared consistently so that strength tests—such as compressive and flexural strength—accurately reflect the concrete's quality. 🏗️ Core Purpose of the Standard

• Cubes (typically 100 mm or 150 mm).
• Cylinders (diameter typically 100 mm or 150 mm; height twice the diameter).
• Prisms (for flexural strength tests).