Concrete cube compressive strength testing is the most widely used method for assessing the structural performance of concrete. The test measures the maximum load a concrete specimen can withstand before failure, providing a reliable indication of the material’s strength and suitability for its intended application.
Fresh concrete is placed into standard cube moulds, usually 100mm or 150mm in size, and compacted to remove air voids. After initial curing, the cubes are removed from the moulds and stored under controlled conditions until the testing age. Each cube is then placed into a compression testing machine where load is applied gradually and evenly to the specimen until it fails. The maximum load recorded at failure is used to calculate the compressive strength of the concrete.
Compressive strength testing is essential for verifying that concrete delivered to site achieves the required structural performance. The results provide assurance that the concrete mix complies with design specifications, quality standards, and regulatory requirements. Regular cube testing also helps identify potential issues with mix design, batching, placement, or curing, allowing problems to be addressed before they impact the safety or durability of the structure.
Concrete cube testing is routinely used across a wide range of construction projects where structural concrete is specified. It is commonly carried out for foundations, columns, beams, slabs, bridges, and other load-bearing elements to confirm that the concrete achieves the required strength. The test results are often required as part of project quality control, contractor compliance, and engineering verification throughout the construction process.
Yes. Our technicians can attend site to take concrete cube samples during your pour, ensuring they are cast, labelled, and stored correctly before being transported to the laboratory for curing and compressive strength testing.
We can usually arrange rapid site attendance, often within short notice depending on location and scheduling. This ensures cube samples are taken at the correct time during the concrete pour to maintain test validity.
Yes. We routinely carry out 7-day and 28-day compressive strength tests, and additional ages can be tested if required for early strength assessment or investigation purposes.
Yes. After testing, we issue a clear and traceable test report showing cube identification, test age, applied load, compressive strength results, and compliance with the relevant testing standard.
BS EN 12390-1:2021, BS EN 12390-2:2019, BS EN 12390-3:2019
Yes. If results are lower than expected, we can assist with additional investigation testing, such as core sampling, further strength testing, or reviewing the cube preparation and curing process.
We test cubes from ready-mix concrete, site-batched concrete, precast concrete, and specialist mixes, helping contractors and engineers confirm that their concrete achieves the specified strength.
Concrete cube testing is the most common method for assessing the compressive strength of concrete. This essential test evaluates the material's ability to withstand crushing loads, ensuring that it meets the required performance standards for structural applications.