Work Item
ASTM WK69721

New Test Method for Measuring the Permeability of Powders as a Function of Consolidation Using the Freeman Technology FT4 Powder Rheometer

1. Scope

2.1 Scope The scope of the Committee shall be: The promotion of knowledge; stimulation of research; the development of specifications and methods for sampling and testing; and the development of terminology, definitions, and practices relating to the physical and chemical properties and behavior of soil, rock, and the fluids contained therein. Included are the physical and chemical properties and behavior of: soil-like materials and fluids occupying the pore spaces, fissures and other voids in soil and rock insofar as such fluids may influence the properties, behavior and uses of the soil and rock materials. Excluded are the uses of rock for building stone and for constituent materials in portland cement and bituminous paving and structures coming under the jurisdiction of other committees of the Society.

2.2 Interest Area The areas of interest of the Committee are soil, rock, powders, and such materials that may be intimately associated with soil and rock. . It will be the policy of this Committee to avoid, insofar as possible, dealing with methods of design of engineered structures and all those features of general practice in the use of soil and rock which may not involve the development of standards. It will, however, be considered within the scope of the Committee's work to promote by every desirable means the close cooperation of other organizations and committees whose field of endeavor is closely allied to that of the Committee.


Freeman Technology; FT4 Powder Rheometer; normal stress; permeability; powder; powder bed; pressure drop; superficial gas velocity.


This test method describes an established method for the measurement of powder gas permeability. The method is widely used in industry by many industrial practitioners across different sectors. It helps provide bulk powder properties that are relevant to powder behavior in hoppers, filling applications, tablet compression, conveying, and so forth.

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


Developed by Subcommittee: D18.24

Committee: D18

Staff Manager: Katerina Koperna

Work Item Status

Date Initiated: 08-28-2019

Technical Contact: Jamie Clayton

Item: 001

Ballot: D18.24 (19-04)

Status: Will Reballot Item

Item: 019

Ballot: D18 (20-02)

Status: Will Reballot Item

Item: 023

Ballot: D18 (21-02)

Status: Will Reballot Item

Item: 013

Ballot: D18 (21-05)

Status: Will Reballot Item

Item: 012

Ballot: D18 (22-01)

Status: Negative Votes Need Resolution