Compaction is arguably the most critical step in specimen preparation, as improper compaction can significantly underestimate concrete strength. The standard specifies different compaction procedures depending on the specimen dimensions.
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Curing specimens under controlled temperature and humidity conditions. bs en 12390-2:2019
BS EN 12390-2:2019 specifies the methods for making and curing test specimens from fresh concrete. It covers cubes, cylinders, and prisms used for compressive, tensile, and flexural strength testing.
Many labs fail audits not due to bad technique but due to using moulds that are slightly out of square or have worn internal faces. Regular calibration and measurement of moulds is mandatory. Compaction is arguably the most critical step in
| | Title | Application | |----------|-----------|-----------------| | Part 1 | Shape, dimensions and other requirements of specimens and moulds | Defines the dimensional tolerances and specifications for test specimens and the moulds used to cast them | | Part 2 | Making and curing specimens for strength tests | This document – covers specimen preparation and curing procedures | | Part 3 | Compressive strength of test specimens | Determines the compressive strength of test specimens | | Part 4 | Compressive strength – Specification for testing machines | Specifies requirements for the equipment used in compressive strength testing | | Part 5 | Flexural strength of test specimens | Establishes procedures for evaluating the flexural (bending) strength of concrete | | Part 6 | Tensile splitting strength of test specimens | Covers the method for determining the splitting tensile strength of cylindrical specimens | | Part 7 | Density of hardened concrete | Specifies procedures for determining the density of test specimens | | Part 8 | Depth of penetration of water under pressure | Establishes a method for assessing the water permeability of hardened concrete | | Part 9 | Freeze-thaw resistance | Covers the assessment of concrete's durability under freeze-thaw cycling | | Part 10 | Determination of the carbonation resistance of concrete | Establishes methods for assessing the carbonation depth and resistance of hardened concrete | | Part 11 | Determination of the chloride resistance of concrete | Specifies procedures for assessing the resistance of hardened concrete to chloride ingress | | Part 12 | Determination of the carbonation resistance of concrete at atmospheric CO₂ levels | Establishes a method for assessing the carbonation resistance of concrete under natural atmospheric conditions |
The concrete sample should be obtained in accordance with BS EN 12350-1. Place the sample on a clean, non-absorbent sampling tray and briefly remix it with a shovel or scoop to ensure homogeneity. Step 3: Filling and Compaction This link or copies made by others cannot be deleted
Understanding the differences between the 2009 and 2019 versions is critical for laboratories seeking to maintain UKAS (United Kingdom Accreditation Service) accreditation or simply follow best practice.
The standard is a critical technical document that specifies methods for making and curing specimens for strength tests of hardened concrete.
The Definitive Guide to BS EN 12390-2:2019: Making and Curing Concrete Test Specimens