The standard mandates that moulds must be rigid, non-absorbent, and dimensionally accurate to within specified tolerances. For cubes, the most common specimen in the UK, the internal dimensions must be precise. Sampling fresh concrete must follow BS EN 12350-1, ensuring a representative batch.
Defining exactly how to fill and compact molds.
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The standard is methodical in its approach, addressing every stage from molding to the moment before testing. bs en 12390-2:2019
Uploaded by. ... Scope: Defines the scope of the standard, covering test specimen molding and curing for strength tests. Foreword:
Specifies procedures for making, compacting, finishing, marking, curing and transporting concrete test specimens used for strength tests (primarily compressive strength). Applies to cubes and cylinders and may be used for other test methods.
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.
Q: What are the benefits of using BS EN 12390-2:2019? A: The benefits of using BS EN 12390-2:2019 include improved accuracy, increased confidence in the quality and durability of concrete, and compliance with European and UK regulations. The standard mandates that moulds must be rigid,
A temperature-controlled environment capable of maintaining water or air at a continuous in hot climates), with relative humidity for air curing. 2. Sampling and Preparing the Concrete
As a harmonized European standard, BS EN 12390-2:2019 superseded the previous 2009 version and has been essential for compliance with UK construction regulations even after Brexit. This article provides a detailed look at the standard, breaking down its key requirements, procedures, and why it is indispensable for any construction quality assurance process.
According to the guidelines, fresh concrete is poured into moulds (commonly 100mm or 150mm cubes or cylinders). Proper compaction is essential to remove trapped air, which can weaken the specimen.
The ambient temperature surrounding the moulds during initial curing must be maintained at 20°C (± 2°C) in a lab environment, or 20°C (± 5°C) if site-cured in a climate-controlled box. Demoulding and Marking Defining exactly how to fill and compact molds
The standard allows two primary methods for permanent curing:
Once compaction is complete, the excess concrete is removed using a steel float or straightedge. The surface must be troweled completely flat and flush with the top edge of the mould. 4. The Critical Curing Framework
The period immediately after casting is when concrete is most vulnerable to temperature fluctuations and moisture loss.
Immediately after leveling, the specimens must be protected from moisture loss, wind, and direct sunlight. They are typically covered with a plastic sheet or lid.
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