AS 1141.30.1 sets out the method for determining a quality classification of coarse aggregate by visual comparison with pre-prepared reference specimens.
AS 1141.30.1:2022 history
2022AS 1141.30.1:2022 Methods for sampling and testing aggregates, Method 30.1: Coarse aggregate quality by visual comparison
1970AS 1141.30.1:2009 Aggregate Sampling and Testing Methods Visual Comparison of Coarse Aggregate Quality