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Description of ASTM-D4648 2013ASTM D4648 / D4648M - 13Standard Test Method for Laboratory Miniature Vane Shear Test for Saturated Fine-Grained Clayey SoilActive Standard ASTM D4648 / D4648M | Developed by Subcommittee: D18.05 Book of Standards Volume: 04.08 ASTM D4648 / D4648MSignificance and Use 5.1 The miniature vane shear test may be used to obtain estimates of the undrained shear strength of fine-grained soils. The test provides a rapid determination of the shear strength on undisturbed, or remolded or reconstituted soils.
Note 2 Notwithstanding the statements on precision and bias contained in this test method: The precision of this
test method 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. Users of this test method are cautioned that compliance with Practice D3740 does not in itself ensure reliable testing.
Reliable testing depends on several factors; Practice D3740 provides a means for evaluating some of those factors.
1. Scope 1.1 This test method covers the miniature vane test in very soft to stiff saturated fine-grained clayey soils (??=?0). Knowledge of the nature of the soil in which each vane test is to be made is necessary for assessment of the applicability and interpretation of the test results.
Note 1 It is recommended that the miniature vane test be conducted in fine-grained, predominately clay soils
with an undrained shear strength less than 1.0 tsf [100 kPa]. Vane failure conditions in higher strength clay and predominantly silty soils may deviate from the assumed cylindrical failure
surface, thereby causing error in the measured strength.
1.2 This test method includes the use of both conventional calibrated torque spring units (Method A) and electrical torque transducer units (Method B) with a motorized miniature vane shear device. 1.3 Laboratory vane is an ideal tool to investigate strength anisotropy in the vertical and horizontal directions, if suitable samples (specimens) are available. 1.4 All measured and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026 . 1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the 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 and health practices and determine the applicability of regulatory limitations prior to use.
ASTM Standards D1587 Practice for Thin-Walled Tube Sampling of Soils for Geotechnical Purposes D2488 Practice for Description and Identification of Soils (Visual-Manual Procedure) D2573 Test Method for Field Vane Shear Test in Cohesive Soil D3740 Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction D4220 Practices for Preserving and Transporting Soil Samples D6026 Practice for Using Significant Digits in Geotechnical Data Keywords clays; laboratory; miniature; remolded; saturated; shear value; undisturbed; undrained strength ; ICS Code ICS Number Code 93.020 (Earth works. Excavations. Foundation construction. Underground works) DOI: 10.1520/D4648_D4648M-13 ASTM International is a member of CrossRef. ASTM D4648 / D4648MThe following editions for this book are also available...This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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