This standard sets out the methods for the determination of the fine particle size distribution in road materials. This distribution is determined by dry sieving in the case of materials coarser than 2.36 mm and by decantation in the case of materials finer than 2.36 mm. In the latter case the proportions determined are those passing 425 nm and 75 urn sieves and that less than 13.5 urn diameter. These sizes are in the ratio derived from Wilhelmi's formula for maximum density grading.
The procedure for the determination of coarse particle size distribution and particle size distribution for fillers for asphalt is described in AS 1141.11.
AS 1141.19:1980 history
2018AS 1141.19:2018 Methods for sampling and testing aggregates, Method 19: Fine particle size distribution in road materials by sieving and decantation
0000 AS 1141.19:1998(R2013)
1970AS 1141.19:1998 Methods for sampling and testing aggregates - Fine particle size distribution in road materials by sieving and decantation
1980AS 1141.19:1980 AS 1141.19 Fine particle size distribution in road materials