En 12390-2:2019 — Bs

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

Depending on the mix consistency, technicians must use a mechanical vibrating table, an internal poker vibrator, or a manual compacting bar/rod of specified weight and dimensions.

Certified environmental chambers, saturated mist rooms, or water tanks equipped with automated temperature recording devices. 3. Step-by-Step Procedure for Making Specimens

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: 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 BS EN 12390-2:2019 standard specifies the testing procedure for determining the compressive strength of hardened concrete. The test involves the following steps:

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. This standard applies to concrete tested under laboratory

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.

For cylinders, it is placed in layers proportional to the height (usually layers not exceeding 100mm). Step 3: Compaction

BS EN 12390-2:2019 defines the standardized methods for making and curing concrete test specimens, such as cubes, cylinders, and prisms, to ensure accurate compressive and flexural strength results. The standard outlines specific procedures for molding, compaction, and environmental curing controls required for quality assurance and regulatory compliance. For more details, visit BSI Knowledge . BS EN 12390-2:2019 - TC | 31 Jul 2019 | BSI Knowledge The finished surface must be flat within 0

BS EN 12390-2:2019 is designed for a broad range of professionals involved in concrete production and construction:

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The dimension of the test specimen must be chosen based on the maximum aggregate size in the concrete. A critical requirement is that the specimen size should be at least as specified in EN 206. This ensures that aggregate particles do not disproportionately influence the strength test results by creating localised weak points or stress concentrations.