ASTM D4719-07
(Test Method)Standard Test Methods for Prebored Pressuremeter Testing in Soils (Withdrawn 2016)
Standard Test Methods for Prebored Pressuremeter Testing in Soils (Withdrawn 2016)
SIGNIFICANCE AND USE
This test method provides a stress-strain response of the soil in situ. A pressuremeter modulus and a limit pressure is obtained for use in geotechnical analysis and foundation design.
The results of this test method are dependent on the degree of disturbance during drilling of the borehole and insertion of the pressuremeter probe. Since disturbance cannot be completely eliminated, the interpretation of the test results should include consideration of conditions during drilling. This disturbance is particularly significant in very soft clays and very loose sands. Disturbance may not be eliminated completely but should be minimized for the prebored pressuremeter design rules to be applicable.
Note 5—The quality of the result produced by 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/sampling/ inspection/etc. Users of this test method are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.
TABLE 1 Typical Probe and Borehole Dimensions Hole Diameter
DesignationProbe
Diameter,
mmBorehole Diameter Nominal, mmMax., mm Ax444553 Bx586070 Nx747689
FIG. 1 a) Basic Principles of the Triple Cell Design Pressuremeter (Baguelin, Jézéquel and Shields, 1978,3 b) Slotted Tube with Probe
SCOPE
1.1 This test method covers pressuremeter testing of soils. A pressuremeter test is an in situ stress-strain test performed on the wall of a borehole using a cylindrical probe that is expanded radially. To obtain viable test results, disturbance to the borehole wall must be minimized.
1.2 This test method includes the procedure for drilling the borehole, inserting the probe, and conducting pressuremeter tests in both granular and cohesive soils, but does not include high pressure testing in rock. Knowledge of the type of soil in which each pressuremeter test is to be made is necessary for assessment of (1) the method of boring or probe placement, or both, (2) the interpretation of the test data, and (3) the reasonableness of the test results.
1.3 This test method does not cover the self-boring pressuremeter, for which the hole is drilled by a mechanical or jetting tool inside the hollow core of the probe. This test method is limited to the pressuremeter which is inserted into predrilled boreholes or, under certain circumstances, is inserted by driving.
1.4 Two alternate testing procedures are provided as follows:
1.4.1 Procedure A—The Equal Pressure Increment Method.
1.4.2 Procedure B—The Equal Volume Increment Method.
Note 1—A standard for the self-boring pressuremeter is scheduled to be developed separately. Pressuremeter testing in rock may be standardized as an adjunct to this test method.
Note 2—Strain-controlled tests also can be performed, whereby the probe volume is increased at a constant rate and corresponding pressures are measured. This method shall be applied only if special requirements must be met and is not covered by this test method. Strain-controlled tests may yield different results than the procedure described in this test method.
1.5 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026.
1.6 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.
1.7 The values stated in SI units are to be regarded as the standard.
1.8 This standard does not purport to address all of the safety concerns, if any, associated wit...
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D4719 − 07
StandardTest Methods for
1
Prebored Pressuremeter Testing in Soils
This standard is issued under the fixed designation D4719; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 1.6 The method used to specify how data are collected,
calculated, or recorded in this standard is not directly related to
1.1 Thistestmethodcoverspressuremetertestingofsoils.A
theaccuracytowhichthedatacanbeappliedindesignorother
pressuremeter test is an in situ stress-strain test performed on
uses, or both. How one applies the results obtained using this
the wall of a borehole using a cylindrical probe that is
standard is beyond its scope.
expanded radially. To obtain viable test results, disturbance to
1.7 The values stated in SI units are to be regarded as the
the borehole wall must be minimized.
standard.
1.2 This test method includes the procedure for drilling the
1.8 This standard does not purport to address all of the
borehole, inserting the probe, and conducting pressuremeter
safety concerns, if any, associated with its use. It is the
tests in both granular and cohesive soils, but does not include
responsibility of the user of this standard to establish appro-
high pressure testing in rock. Knowledge of the type of soil in
priate safety and health practices and determine the applica-
which each pressuremeter test is to be made is necessary for
bility of regulatory limitations prior to use. See Note 7.
assessment of (1) the method of boring or probe placement, or
both, (2) the interpretation of the test data, and (3) the
2. Referenced Documents
reasonableness of the test results.
2
2.1 ASTM Standards:
1.3 This test method does not cover the self-boring
D653 Terminology Relating to Soil, Rock, and Contained
pressuremeter, for which the hole is drilled by a mechanical or
Fluids
jetting tool inside the hollow core of the probe. This test
D1587 Practice for Thin-Walled Tube Sampling of Soils for
method is limited to the pressuremeter which is inserted into
Geotechnical Purposes
predrilledboreholesor,undercertaincircumstances,isinserted
D2113 Practice for Rock Core Drilling and Sampling of
by driving.
Rock for Site Exploration
1.4 Two alternate testing procedures are provided as fol-
D3740 Practice for Minimum Requirements for Agencies
lows:
Engaged in Testing and/or Inspection of Soil and Rock as
1.4.1 Procedure A—The Equal Pressure Increment Method.
Used in Engineering Design and Construction
1.4.2 Procedure B—The Equal Volume Increment Method.
D6026 Practice for Using Significant Digits in Geotechnical
Data
NOTE 1—A standard for the self-boring pressuremeter is scheduled to
be developed separately. Pressuremeter testing in rock may be standard-
ized as an adjunct to this test method.
3. Terminology
NOTE 2—Strain-controlled tests also can be performed, whereby the
3.1 Definitions:
probe volume is increased at a constant rate and corresponding pressures
are measured. This method shall be applied only if special requirements
3.1.1 For common definitions of terms used in this standard,
must be met and is not covered by this test method. Strain-controlled tests
refer to Terminology D653.
may yield different results than the procedure described in this test
–2
3.1.2 limit pressure, P [FL ], n—the pressure at which the
l
method.
probe volume reaches twice the original soil cavity volume.
1.5 All observed and calculated values shall conform to the
–2
3.1.3 pressuremeter modulus, E [FL ], n—the modulus
p
guidelines for significant digits and rounding established in
calculated from the slope of the pseudo-elastic portion of the
Practice D6026.
corrected pressure-volume curve experiencing little to no
creep.
1
These test methods are under the jurisdiction ofASTM Committee D18 on Soil
and Rock and is the direct responsibility of Subcommittee D18.02 on Sampling and
2
Related Field Testing for Soil Evaluations. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Feb. 15, 2007. Published April 2007. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1987. Last previous edition approved in 2000 as D4719 – 00. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D4719-07. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D4719 − 07
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3.1.4 unload-reload modulus, E [FL ], n—t
...
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