NF EN ISO 17892-10

NF EN ISO 17892-10

December 2018
Standard Current

Geotechnical investigation and testing - Laboratory testing of soil - Part 10 : direct shear tests

This document specifies two laboratory test methods for the determination of the effective shear strength of soils under consolidated drained conditions using either a shearbox or a ring shear device. This document is applicable to the laboratory determination of effective shear strength parameters for soils in direct shear within the scope of geotechnical investigations. The tests included in this document are for undisturbed, remoulded, re-compacted or reconstituted soils. The procedure describes the requirements of a determination of the shear resistance of a specimen under a single vertical (normal) stress. Generally three or more similar specimens from one soil are prepared for shearing under three or more different vertical pressures to allow the shear strength parameters to be determined in accordance with Annex B. Special procedures for preparation and testing the specimen, such as staged loading and pre-shearing or for interface tests between soils and other materials, are not covered in the procedure of this document. NOTE This document fulfils the requirements of the determination of the drained shear strength of soils in direct shear for geotechnical investigation and testing in accordance with EN 1997-1 and EN 1997-2.

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National standards and national normative documents

Publication date

December 2018

Number of pages

33 p.

Reference

NF EN ISO 17892-10

ICS Codes

13.080.20   Physical properties of soils
93.020   Earthworks. Excavations. Foundation construction. Underground works

Classification index

P94-512-10

Print number

1

International kinship

ISO 17892-10:2018

European kinship

EN ISO 17892-10:2018
Sumary
Geotechnical investigation and testing - Laboratory testing of soil - Part 10 : direct shear tests

This document specifies two laboratory test methods for the determination of the effective shear strength of soils under consolidated drained conditions using either a shearbox or a ring shear device.

This document is applicable to the laboratory determination of effective shear strength parameters for soils in direct shear within the scope of geotechnical investigations.

The tests included in this document are for undisturbed, remoulded, re-compacted or reconstituted soils. The procedure describes the requirements of a determination of the shear resistance of a specimen under a single vertical (normal) stress. Generally three or more similar specimens from one soil are prepared for shearing under three or more different vertical pressures to allow the shear strength parameters to be determined in accordance with Annex B.

Special procedures for preparation and testing the specimen, such as staged loading and pre-shearing or for interface tests between soils and other materials, are not covered in the procedure of this document.

NOTE This document fulfils the requirements of the determination of the drained shear strength of soils in direct shear for geotechnical investigation and testing in accordance with EN 1997-1 and EN 1997-2.

Replaced standards (1)
XP CEN ISO/TS 17892-10
August 2005
Standard Cancelled
Geotechnical investigation and testing - Laboratory testing of soil - Part 10 : direct shear tests

<p>ISO/TS 17892-10:2004 specifies laboratory test methods to establish the effective shear strength parameter for soils within the scope of the geotechnical investigations according to prEN 1997-1 and -2.</p> <p>The test method consists of placing the test specimen in the direct shear device, applying a pre-determined normal stress, providing for draining (and wetting if required) of the test specimen, or both, consolidating the specimen under normal stress, unlocking the frames that hold the specimen, and displacing one frame horizontally with respect to the other at a constant rate of shear-deformation and measuring the shearing force, and horizontal displacements as the specimen is sheared. Shearing is applied slowly enough to allow excess pore pressures to dissipate by drainage so that effective stresses are equal to total stresses.</p> <p>Direct shear tests are used in earthworks and foundation engineering for the determination of the effective shear strength of soils.</p>

Table of contents
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  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Symboles
  • 5 Appareillage
  • 6 Procédure d'essai
  • 7 Résultats de l'essai
  • 8 Rapport d'essai
  • Annexe A Étalonnage, maintenance et contrôles
  • Annexe B Calculs supplémentaires pour les paramètres de résistance effective
  • Bibliographie
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