After the final layer is compacted, excess concrete is removed and the surface is leveled flush with the mold rim. Specimens must be clearly marked for traceability without damaging the fresh surface. 4. Curing and Storage Requirements
Before filling the molds, ensure the concrete sample is truly representative of the batch. Sampling should be conducted in accordance with .
BS EN 12390-2:2019 is a European Standard that outlines the procedures for making and curing specimens of hardened concrete. This standard is part of a series of standards for testing hardened concrete, and it provides guidelines for the preparation of concrete specimens for testing. This report provides an overview of the standard, its significance, and key aspects of making and curing specimens. bs en 12390-2:2019
standard is not just a regulatory requirement but a fundamental practice for building durable and safe infrastructure. comparative breakdown of the specific changes between the 2009 and 2019 versions?
BS EN 12390-2:2019 is not merely a technical recommendation – it is embedded in the UK's conformity assessment and accreditation systems. UKAS (United Kingdom Accreditation Service) accredited laboratories must demonstrate compliance with BS EN 12390-2:2019 for testing activities, including: After the final layer is compacted, excess concrete
: Moulds must conform to BS EN 12390-1 and be coated with a non-reactive release agent to prevent sticking.
Adhering to these steps is critical, as minor deviations can lead to significant variations in reported strength. Compaction Curing and Storage Requirements Before filling the molds,
Allowing cast molds to bake on-site destroys early microstructural development, leading to micro-cracking and low 28-day strengths. Always use an insulated, temperature-controlled site curing box.
: Standardizing the laboratory and site conditions for specimen preparation to minimize variability in test results. Relationship to Other Standards : It is often used in conjunction with BS EN 12350-1 (sampling fresh concrete) and BS EN 12390-3 (compressive strength testing). 2. Key Procedures for Making Specimens
Methods include using a vibrating table or a poker vibrator to ensure the concrete density is representative of the structure.