ASTM D6773-22
Standard Test Method for Bulk Solids Using Schulze Ring Shear Tester

Standard No.

ASTM D6773-22

Release Date

2022

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D6773-22

Scope

1.1 This test method covers the apparatus and procedures for measuring the unconfined yield strength of bulk solids during both continuous flow and after storage at rest. In addition, measurements of internal friction, bulk density, and wall friction on various wall surfaces are included. 1.2 This test method covers operation of the manuallycontrolled Schulze Ring Shear Tester. An automated version of this tester is also available. Its method of testing bulk solids is similar in principle to that described in this test method. 1.3 The most common use of this information is in the design of storage bins and hoppers to prevent flow stoppages due to arching and ratholing, including the slope and smoothness of hopper walls to provide mass flow. Parameters for structural design of such equipment may also be derived from this data. Another application is the measurement of the flowability of bulk solids, for example, for comparison of different products or optimization. 1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026. 1.4.1 The procedures used to specify how data are collected/ recorded or calculated in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives: and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design. 1.5 Units—The values stated in SI units are to be regarded as standard. No other units of measure are included in this standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D6773-22 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 D4753 Standard Specification for Evaluating, Selecting, and Specifying Balances and Scales for Use in Soil, Rock, and Construction Materials Testing
• ASTM D6026 Standard Practice for Using Significant Digits in Geotechnical Data
• ASTM D6128 Standard Test Method for Shear Testing of Bulk Solids Using the Jenike Shear Cell
• ASTM D653 Standard Terminology Relating to Soil, Rock, and Contained Fluids
• ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

ASTM D6773-22 history

• 2022 ASTM D6773-22 Standard Test Method for Bulk Solids Using Schulze Ring Shear Tester
• 2016 ASTM D6773-16 Standard Test Method for Bulk Solids Using Schulze Ring Shear Tester
• 2008 ASTM D6773-08 Standard Shear Test Method for Bulk Solids Using the Schulze Ring Shear Tester
• 2002 ASTM D6773-02 Standard Shear Test Method for Bulk Solids Using the Schulze Ring Shear Tester