Pavement

This standard sets out the method for determining the Average Least Dimension (ALD) of aggregate particles by the use of vernier callipers or dial gauge or a slotted gauge. The method is applicable to aggregate of nominal size 10 mm and greater for sprayed bituminous surfacing. The method is identical with the procedure as described in Australian Standard AS 1141.20.1 Methods for sampling and testing aggregates, Method 20.1: Average Least Dimension – Direct Measurement (nominal size 10 mm and greater).