What is ISO 20290-2 – Resistance of concrete to fragmentation about? 
Concrete is the most popular building material in the world. It is also the second-most-used substance in the world after water. ISO 20290 is an international standard that discusses the test methods for mechanical and physical properties for aggregates for concrete. Concrete aggregates are composed of geological materials such as gravel, sand and crushed rock. 
ISO 20290-2 is the second part of the ISO 20290 series, which describes the LA-test, for determining the resistance to fragmentation of coarse aggregates. 
Who is ISO 20290-2 – Resistance of concrete to fragmentation for? 
ISO 20290-2 on the resistance of concrete to fragmentation is useful for: 
- Manufacturer of concrete ingredients 
- Civil engineers  
- Concrete quality testing teams 
- Suppliers of aggregate materials for concrete 
Why should you use ISO 20290-2 – Resistance of concrete to fragmentation? 
Aggregate materials help to make concrete mixes more compact. They also decrease the consumption of cement and water and contribute to the mechanical strength of the concrete, making them an indispensable ingredient in the construction and maintenance of rigid structures. Concrete aggregates are composed of geological materials such as gravel, sand and crushed rock. 
ISO 20290-2 walks you through the LA-Test, guiding on:
- A typical Los Angeles machine
- Hollow drum
- Ball load
- Preparation of test portion
- Calculation and expression of results
Using ISO 20290-2 guidelines, you can assess the resistance of concrete to fragmentation, so that end-users get a superior quality product.
