Bs En 12390-2:2019 [top] Jun 2026

┌──────────────────────────────────────────┐ │ Freshly Cast Specimen │ └────────────────────┬─────────────────────┘ │ ▼ ┌──────────────────────────────────────────┐ │ Initial Curing │ │ • Leave in mould for 16 to 72 hours │ │ • Temperature: 20°C (± 2°C or ± 5°C) │ │ • Protect from wind, solar, and shock │ └────────────────────┬─────────────────────┘ │ ▼ ┌──────────────────────────────────────────┐ │ Demoulding Phase │ │ • Carefully remove without damage │ │ • Permanently mark the specimen ID │ └────────────────────┬─────────────────────┘ │ ▼ ┌──────────────────────────────────────────┐ │ Long-Term Curing │ │ • Submerge in water at 20°C (± 2°C) │ │ - OR - │ │ • Mist room at 20°C (± 2°C) & >95% RH │ └──────────────────────────────────────────┘ Initial Curing (In the Mould)

If the cubes show low strength, the standard's strict procedures prove the problem lies in the concrete mix or its delivery, not the way the sample was made or cured.

The preparation process is strictly defined to ensure homogeneity and representativeness of the concrete mix. Mould Preparation

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.

BS EN 12390-2:2019 is the British Standard that specifies methods for for concrete strength tests . It provides a standardized framework to ensure that concrete cubes, cylinders, and prisms are prepared consistently, which is critical for accurate compressive strength assessments. 🏗️ Key Procedural Steps bs en 12390-2:2019

When properly implemented, BS EN 12390‑2 provides substantial benefits:

BS EN 12390-2:2019!

Concrete is often placed in layers (e.g., 50mm deep) and compacted at each stage.

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 Its strict requirements for temperature control and curing

Immediately after demoulding, the specimens must be placed into their final curing environment until the exact moment of testing (commonly at 3, 7, or 28 days). The standard allows two primary methods:

BS EN 12390-2:2019 permits two primary permanent curing methods: Method A: Water Curing (Preferred) Submerge the specimens entirely in a water tank. The water temperature must be strictly maintained at

Before placing concrete, clean the internal surfaces of the molds thoroughly. Apply a thin coat of non-reactive release oil to prevent the concrete from sticking. Ensure all joints are tightly sealed to prevent water leakage. 2. Sampling and Filling

Compared to the 2009 version, BS EN 12390-2:2019 includes several technical refinements: It provides a standardized framework to ensure that

This standard applies to concrete tested under laboratory conditions, specifically for:

BS EN 12390-2:2019 is part of an interconnected ecosystem of concrete standards. The most notable relationships include:

Curing is arguably the most critical aspect of the standard, as it directly impacts the hydration process and strength development. distinguishes between laboratory curing and site curing. 2.1 Initial Curing

Notably, the standard includes a flexibility provision: it can also be used for the making and curing of specimens intended for other test methods beyond strength testing.

Keep the water clean and slightly circulated to prevent localized temperature pockets. Method B: Mist/Moisture Room Curing Place the specimens in a designated curing chamber or room. Maintain the air temperature at Keep the relative humidity at or above