What is BS EN 12504-2 - Testing concrete in structures about?
BS EN 12504-2 is the second part of the multi-series standard BS EN 12504. BS EN 12504-2 specifies a method for determining the rebound number of an area of hardened concrete using a spring-driven hammer.
The hammer can be used for comparative testing, referenced against the concrete with known strength or against concrete that has been shown that it has come from a defined volume of concrete with a population verified as conforming to a particular strength class.
NOTE: The test method is not intended as an alternative for the compressive strength determination of concrete (EN 123903), but with suitable correlation, it can provide an estimate of in situ compressive strength.
Who is BS EN 12504-2 - Testing concrete in structures for?
BS EN 12390‑2 on determination of rebound number for hardened concrete is useful for:
- Cement manufacturing companies
- Suppliers of raw materials for concrete
- Civil engineers
- Construction companies
- Contractors
- Concrete specialists
Why should you use BS EN 12504-2 - Testing concrete in structures?
The rebound hammer is a non-destructive testing apparatus, wherein the rebound of the spring driven mass is measured after its impact with concrete surface. The output of the rebound hammer is referred to as rebound number and are correlated with surface hardness of concrete. To measure the spring-driven mass or strength of concrete, mainly surface hardness, the rebound hammer is used.
BS EN 12504-2 gives you the estimation of the rebound number using the test method which is helpful in assessing the uniformity of concrete in situ and delineating zones or areas of poor quality or deteriorated concrete in structures.
By determining the rebound number through test method under BS EN 12504-2, you will be able to evaluate the extent of surface hardness, thereby estimate the compressive strength of concrete. As a buyer of BS EN 12504-2, you will thus be equipped with a cost-effective non-destructive solution to determine whether the structure will be safe and suitable for its proposed
use. Establishing a standardized system will also enhance international credibility to your services and products.
What’s changed since the last update?
BS EN 12504-2:2021 supersedes EN 12504‑2:2012.
BS EN 12504-2:2021 includes some technical changes with respect to EN 12504‑2:2012. These include:
- A recommendation that two different reference anvils are used for calibrating the equipment
- The allowable range of results has been tightened
