Must be made of non-absorbent, rigid material (usually cast iron, steel, or heavy-duty plastic) that does not react with cement paste. Dimensions must meet strict tolerances (typically 100mm or 150mm cubes/cylinders).
specifies the method for preparing and curing test specimens (cubes, cylinders, or beams) for strength tests. It is part of the BS EN 12390 series, which covers various aspects of testing hardened concrete.
BS EN 12390-2:2019 specifies methods for making and curing concrete specimens for strength tests. It applies to concrete sampled in the field or produced in a laboratory.
The ambient temperature around the molds should be maintained at a controlled level. Final Curing (Water Curing) bs en 12390-2:2019
is more than just a technical document; it is the foundation of trust in concrete construction. By providing a universal, standardized method for preparing and curing test specimens, it eliminates variables, ensures reproducibility, and gives engineers the reliable data they need to certify structures as safe. Whether in a UKAS-accredited laboratory or on a busy construction site, adherence to this standard is a direct reflection of a commitment to quality, safety, and professionalism in the built environment.
The standard provides a rigorous framework for preparing specimens used primarily for compressive and flexural strength testing. It covers the entire lifecycle of a test specimen, including: Preparation : Using non-reactive release agents to prevent sticking. : Layering concrete based on consistency. Compaction
Submerge specimens fully in a water tank. The water temperature must be strictly maintained at 20°C ± 2°C . Must be made of non-absorbent, rigid material (usually
The concrete must be placed into the moulds in layers. The thickness of each layer depends on the specimen size and the method of compaction.
For quality control laboratories, accredited testing firms, and construction contractors, adherence to this standard is often a condition of certification under ISO/IEC 17025. It enables repeatable, comparable, and legally defensible test data. Disputes over concrete strength are frequently traced back to non-compliance with specimen preparation and curing protocols, making this standard a cornerstone of forensic structural analysis.
Will your casting take place in a or directly on-site ? What method of compaction do you intend to use? It is part of the BS EN 12390
: Improper curing (e.g., letting a specimen dry out too quickly) can lead to artificially low strength readings, potentially causing a project to fail inspection unnecessarily.
Using is not just a regulatory requirement; it is essential for: