Bs En 12390-2:2019 →

Placement in a mist room or environmental chamber maintained at 20°C (± 2°C) with a relative humidity ( RH ) of ≥ 95% .

Traceability is essential because strength testing often occurs days or weeks after casting. Without proper marking, specimens can become mixed up, leading to incorrect test results being assigned to the wrong concrete batch – a scenario with potentially serious safety and financial consequences.

To fully appreciate BS EN 12390-2:2019, it is essential to understand its position within the broader family of concrete testing standards. EN 12390, Testing hardened concrete , consists of several complementary parts that collectively provide a comprehensive framework for evaluating the properties of hardened concrete:

Understanding BS EN 12390-2:2019: The Standard for Making and Curing Concrete Test Specimens bs en 12390-2:2019

After compaction, strike off the excess concrete using a straightedge (trowel or plate). For cubes, the surface should be (convex) before final smoothing. The finished surface must be flat within 0.05 mm per 100 mm (checked using a straightedge and feeler gauges).

The 2019 revision introduced several technical updates to align with modern practices and improve consistency:

BS EN 12390-2:2019 is part of a larger multi-part standard ( BS EN 12390: Testing hardened concrete ) used extensively across the United Kingdom and Europe. Specifically, Part 2 dictates the standardized methodologies for casting and curing specimens—such as cubes, cylinders, and prisms—taken from fresh concrete on-site or in a laboratory. Why the 2019 Version Matters Placement in a mist room or environmental chamber

Before casting, ensure the moulds are thoroughly clean and free of hardened concrete residue. Tighten all assembly bolts to prevent grout leakage. Apply a thin, even coat of release agent to the internal surfaces. Step 2: Sampling and Remixing

| | Minimum Tamps per Layer | |----------------|------------------------------| | 100 mm cube | 25 tamps | | 150 mm cube | 35 tamps |

The process of making concrete specimens must be executed systematically to prevent segregation of aggregates and ensure uniform density. Step 1: Preparation of Moulds To fully appreciate BS EN 12390-2:2019, it is

For structural engineers, project managers, and ready-mix suppliers, strict adherence to BS EN 12390-2:2019 protects against contractual and legal liabilities.

The 2019 version replaced the older BS EN 12390-2:2009 standard. The updated version introduced stricter requirements regarding: Temperature verification during the initial curing phase.

This standard is an adoption of the European Standard , which was approved by the European Committee for Standardization (CEN) on 29 April 2019. It officially replaced and withdrew the older BS EN 12390-2:2009 , bringing with it crucial updates to reflect current best practices and technological advancements in concrete testing.