ASTM D7070-04
Standard Test Method for Creep of Rock Core Under Constant Stress and Temperature

Standard No.

ASTM D7070-04

Release Date

2004

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D7070-08

Latest

ASTM D7070-16

Scope

1.1 This test method covers the creep behavior of intact soft and hard rock core in fixed states of stress and temperature. It specifies the apparatus, instrumentation, and procedures for determining the strain as a function of time under sustained load. Hard rocks are those with a maximum axial strain at failure of less than 2 %. Soft rocks include such materials as salt and potash, which often exhibit very large strain at failure.

1.2 This standard replaces and combines the following Standard Test Methods now to be referred to as Methods:

Method A (D 5341 Creep of Hard Rock Core Specimens in Uniaxial Compression at Ambient/Elevated Temperatures);Method B (D 4405 Creep of Soft Rock Core Specimens in Uniaxial Compression at Ambient or Elevated Temperature); and Method C (D 4406 Creep of Rock Core Specimens in Triaxial Compression at Ambient or Elevated Temperature).

1.3 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D 6026.

1.3.1 The method used to specify how data are collected, calculated, or recorded in this standard is not directly related to the accuracy to which the data can be applied in design or other uses, or both. How one applies the results obtained using this standard is beyond its scope.

1.3.2 The values stated in SI units are to be regarded as the standard.

1.4 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 and health practices and to determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section .

ASTM D7070-04 Referenced Document

• ASTM D2113 Standard Practice for Rock Core Drilling and Sampling of Rock for Site Investigation
• ASTM D2216 Standard Test Method for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass
• ASTM D4543 Standard Practices for Preparing Rock Core Specimens and Determining Dimensional and Shape Tolerances
• ASTM D5079 Standard Practices for Preserving and Transporting Rock Core Samples
• ASTM D6026 Standard Practice for Using Significant Digits in Geotechnical Data
• ASTM D653 Standard Terminology Relating to Soil, Rock, and Contained Fluids
• ASTM E122 Standard Practice for Calculating Sample Size to Estimate, With a Specified Tolerable Error, the Average for Characteristic of a Lot or Process
• ASTM E4 Standard Practices for Force Verification of Testing Machines

ASTM D7070-04 history

• 2016 ASTM D7070-16 Standard Test Methods for Creep of Rock Core Under Constant Stress and Temperature
• 2008 ASTM D7070-08 Standard Test Methods for Creep of Rock Core Under Constant Stress and Temperature
• 2004 ASTM D7070-04 Standard Test Method for Creep of Rock Core Under Constant Stress and Temperature