標準號：AS 1141.19-1980
發布日期：1980/7/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍： 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.