ISO 20290-2-2019 混凝土骨料--機械和物理性能試驗方法--第2部分:用洛杉磯試驗測定抗碎裂性的方法 Aggregates for concrete — Test methods for mechanical and physical properties — Part 2: Method for determination of resistance to fragmentation by Los Angeles Test (LA-Test)

This document describes the Los Angeles test, for determining the resistance to fragmentation of coarse aggregates.st edition 2019-11 Aggregates for concrete — Test methods for mechanical and physical properties — Part 2: Method for determination of resistance to fragmentation by Los Angeles Test (LA-Test) Granulats pour béton — Méthodes d'essai relatives aux propriétés mécaniques et physiques — Partie 2: Partie 2: Méthode de détermination de la résistance à la fragmentation par l'essai Los Angeles Reference number ISO 20290-2:2019(E) ？ ISO