GeoTesting Express is a provider of Soil Testing Services – ASTM D, Standard Test Methods for Measurement of Hydraulic Conductivity of Saturated Porous. All the Controls products ASTM D standard. Enter now!. Standard Test Method for Measurement of Hydraulic Conductivity of Saturated Porous Materials Using a Flexible Wall Permeameter.

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Originally approved in Triaxial cell with accessories: Therefore, For overconsolidated consolidated soils: An explanation of how to measure DHc is given in X1. Any gradient equal to or less than the highest gradient yielding a similar hydraulic conductivity may be used for testing. Place the membrane around the specimen, and using the membrane expander or other suitable O-ring expander, place one or more O-rings to seal the membrane to the base and one or more additional O-rings to seal the membrane to the top cap.

That ashm, conform completion of primary consolidation before this determination; see Test Method D or D on how to con? Atsm temperature shall be periodically measured and recorded.

Soil mechanics – Static triaxial systems: This can be accomplished by individually connecting the tailwater and headwater tubing lines to clean burettes containing water at equal elevation.


The water is usually deaired by boiling, by spraying a? There are six alternate methods or hydraulic systems that may be used to measure the hydraulic conductivity.

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Any other measuring device meeting these requirements is acceptable. The easiest way to verify that volume changes are minor is to measure the height of the specimen during the back-pressuring process. Units other than seconds smeters metc. The d084 loss across the permeameter shall be measured to a minimum of three signi?

D — 03 three days. Large clods of material should not be broken down prior to compaction unless it is known that they will be broken in?

ASTM D5084

It is beyond the scope of this standard to consider signi? In addition, there is continuity of in? Therefore, the volume of the saturated test specimen remains constant during permeation.

These test methods apply to water-saturated porous materials containing virtually no air. In the system shown in Fig.

The pressure head is the height of a vertical column of static water that can be supported by the static pressure p at a given point. D508 materials that are fully saturated with water will have a B value of 1.


ASTM D Standard

Permeation with other liquids, such as chemical wastes, can v5084 accomplished using procedures similar to those described in these test methods. For test specimens having a height to diameter ratio of about one, this value is about 0. For normally consolidated soils: NOTE 10—The test specimen may be consolidated prior to application of back pressure.

The mass of specimens astj than g shall be determined to the nearest 0. If the soil core is not extruded vertically, care should be taken to avoid bending stresses on the core due to gravity. Permeation with other liquids, such as chemical wastes, can be accomplished using procedures similar to those described in these test methods.

The development of the hydraulic conductivity equation for this type of system is given in Appendix X1. More than system configurations are available depending on type of test, d50884 size, pressure system. When the initial and? Data acquisition can be shared with other soil testing equipment.