Work Item
ASTM WK65304

New Test Method for Particle-Size Distribution (Gradation) of Fine-Grained Soils Using the Sedimentation (Integral Suspension Pressure Method) Analysis

1. Scope

1.1 This test method covers the quantitative determination of the distribution of particle sizes of the fine-grained portion of soils. The Integral Suspension Pressure (ISP) method is used to determine the particle-size distribution of the material that is finer than the No. 200 (75-micron) sieve and larger than about 0.2-micron. The test is performed on material passng the No. 10 (2.0-mm) or finer sieve and the results are presented as the mass percent finer versus the log of the particle diameter.


Particle size distribution, sedimentation, pressure sensor, stokes law


New methods are being developed to quantify particle size analysis. The ISP method reduces human error and help increase the accuracy of measuring particle size distribution. The new methods also reduce the amount of labor needed to make these measurements.

The title and scope are in draft form and are under development within this ASTM Committee.


Developed by Subcommittee: D18.03

Committee: D18

Staff Manager: Katerina Koperna

Work Item Status

Date Initiated: 10-08-2018

Technical Contact: Leonardo Rivera

Item: 000