ISO 22476-4:2021
Geotechnical investigation and testing — Field testing — Part 4: Prebored pressuremeter test by Ménard procedure
This document specifies equipment requirements, the execution of and reporting on the Ménard pressuremeter test.
This document describes the procedure for conducting a Ménard pressuremeter test in natural grounds, treated or untreated fills, either on land or off-shore.
The pressuremeter tests results of this document are suited to a quantitative determination of ground strength and deformation parameters. They can yield lithological information in conjunction with measuring while drilling performed when creating the borehole (according to ISO 22476-15). They can also be combined with direct investigation (e.g. sampling according to ISO 22475-1) or compared with other in situ tests (see EN 1997-2).
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
4 Equipment
4.1 General description
4.2 Pressuremeter probe
4.2.1 General
4.2.2 Probe with flexible cover
4.2.3 Probe with flexible cover and an additional more rigid protection
4.2.4 Probe with flexible cover and slotted tube
4.3 Connecting lines and injected fluid
4.4 Pressure and volume control unit
4.4.1 General
4.4.2 Measurement and control
4.4.3 Data logger
5 Test procedure
5.1 Assembling the parts
5.2 Calibration and corrections
5.3 Pressuremeter test pocket and probe placing
5.4 Preparation for testing
5.5 Establishing the loading programme
5.6 Establishing the pressure of the guard cells for tri-cell probes
5.7 Expansion
5.7.1 General
5.7.2 Readings and recordings
5.7.3 End of test
5.8 Back-filling of the pockets
5.9 Safety requirements
6 Test results
6.1 Data sheet and field print-out or display
6.1.1 Data sheet for type A control unit
6.1.2 Site print-out for type B and C control units
6.1.3 Raw pressuremeter curve
6.2 Corrected pressuremeter curve
6.3 Calculated results
7 Reporting
7.1 General
7.2 Field report
7.3 Test report
7.3.1 General
7.3.2 Ménard pressuremeter test report
7.3.3 Pressuremeter tests log
Annex A (normative) Geometrical features of pressuremeter probes
Annex B (normative) Calibration and corrections
Annex C (normative) Placing the pressuremeter probe in the ground
Annex D (normative) Obtaining pressuremeter parameters
Annex E (normative) Uncertainties
Annex F (informative) Pressuremeter test records
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
4 Equipment
4.1 General description
4.2 Pressuremeter probe
4.2.1 General
4.2.2 Probe with flexible cover
4.2.3 Probe with flexible cover and an additional more rigid protection
4.2.4 Probe with flexible cover and slotted tube
4.3 Connecting lines and injected fluid
4.4 Pressure and volume control unit
4.4.1 General
4.4.2 Measurement and control
4.4.3 Data logger
5 Test procedure
5.1 Assembling the parts
5.2 Calibration and corrections
5.3 Pressuremeter test pocket and probe placing
5.4 Preparation for testing
5.5 Establishing the loading programme
5.6 Establishing the pressure of the guard cells for tri-cell probes
5.7 Expansion
5.7.1 General
5.7.2 Readings and recordings
5.7.3 End of test
5.8 Back-filling of the pockets
5.9 Safety requirements
6 Test results
6.1 Data sheet and field print-out or display
6.1.1 Data sheet for type A control unit
6.1.2 Site print-out for type B and C control units
6.1.3 Raw pressuremeter curve
6.2 Corrected pressuremeter curve
6.3 Calculated results
7 Reporting
7.1 General
7.2 Field report
7.3 Test report
7.3.1 General
7.3.2 Ménard pressuremeter test report
7.3.3 Pressuremeter tests log
Annex A (normative) Geometrical features of pressuremeter probes
Annex B (normative) Calibration and corrections
Annex C (normative) Placing the pressuremeter probe in the ground
Annex D (normative) Obtaining pressuremeter parameters
Annex E (normative) Uncertainties
Annex F (informative) Pressuremeter test records
Bibliography