Store the molds in an environment maintained at
Enhanced clauses regarding the safe transport of specimens from the construction site to the laboratory during the initial curing phase, emphasizing the need to prevent moisture loss and physical jarring.
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).
Options include a mechanical vibrating table, an internal poker vibrator, or a manual compacting rod/bar. The standard defines the minimum weight and surface area of manual rods to ensure uniform energy transfer. bs en 12390-2:2019
This article provides a comprehensive breakdown of BS EN 12390-2:2019, covering its scope, essential equipment, step-by-step procedures, and the critical importance of proper curing. 1. Scope and Significance of the Standard
For civil engineers, quality control personnel, laboratory professionals, and contractors alike, a thorough understanding and faithful implementation of BS EN 12390-2:2019 is to ensuring that concrete structures perform as intended – safely, durably, and reliably – for their entire service life.
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. Store the molds in an environment maintained at
Use a standard compacting rod or bar. Distribute the strokes uniformly across the cross-section of the mold. The standard dictates a minimum number of strokes per layer (typically 25 strokes for standard cubes) to ensure adequate density. 4. Finishing the Surface
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Ensuring that the concrete mix delivered to the site meets specifications. The finished surface must be flat within 0
: Outlines how to fill molds and compact concrete to remove entrapped air, which is vital for achieving a representative strength profile.
: Adhering to these methods ensures that the concrete used in buildings and infrastructure truly meets the design's structural requirements. Key Resources BS EN 12390-2:2019 Concrete Testing | PDF - Scribd