ASTM D6393-14
Standard Test Method for Bulk Solids Characterization by Carr Indices

Standard No.

ASTM D6393-14

Release Date

2014

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D6393/D6393M-21

Latest

ASTM D6393/D6393M-21

Scope

5.1 This test method provides measurements that can be used to describe the bulk properties of a powder or granular material.

5.2 The measurements can be combined with practical experience to provide relative rankings of various forms of bulk handling behavior of powders and granular materials for a specific application.

Note 1: The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors. Practice D3740 was developed for agencies engaged in the testing or inspection (or both) of soil and rock. As such it is not totally applicable to agencies performing this standard. However, users of this standard should recognize that the framework of Practice D3740 is appropriate for evaluating the quality of an agency performing this standard. Currently there is no known qualifying national authority that inspects agencies that perform this standard.

1.1 This test method covers an apparatus and procedures for measuring properties of bulk solids, henceforth referred to as Carr Indices.2

1.2 This test method is suitable for free flowing and moderately cohesive powders and granular materials up to 2.0 mm in size. Materials must be able to pour through a 6.0 to 8.0-mm diameter funnel outlet when in an aerated state.

1.3 This method consists of eight measurements and two calculations for Carr Indices as follows. Each measurement, or calculation, or combination of them, can be used to characterize the properties of bulk solids.

1.3.1 Measurement of Carr Angle of Repose

1.3.2 Measurement of Carr Angle of Fall

1.3.3 Calculation of Carr Angle of Difference

1.3.4 Measurement of Carr Loose Bulk Density

1.3.5 Measurement of Carr Packed Bulk Density

1.3.6 Calculation of Carr Compressibility

1.3.7 Measurement of Carr Cohesion

1.3.8 Measurement of Carr Uniformity

ASTM D6393-14 Referenced Document

• ASTM D2216 Standard Test Method for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass
• ASTM D3740 Standard Practice for Minimum Requirements for Agencies Engaged in the Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
• ASTM D6026 Standard Practice for Using Significant Digits in Geotechnical Data
• ASTM D653 Standard Terminology Relating to Soil, Rock, and Contained Fluids

ASTM D6393-14 history

• 2021 ASTM D6393/D6393M-21 Standard Test Method for Bulk Solids Characterization by Carr Indices
• 2014 ASTM D6393-14 Standard Test Method for Bulk Solids Characterization by Carr Indices
• 2008 ASTM D6393-08 Standard Test Method for Bulk Solids Characterization by Carr Indices
• 2006 ASTM D6393-99(2006) Standard Test Method for Bulk Solids Characterization by Carr Indices
• 1999 ASTM D6393-99 Standard Test Method for Bulk Solids Characterization by Carr Indices