BS ISO 20290-2:2019

适用范围: 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.