ASTM D is a significantly updated version of the Standard Test Method for Determination of Thermal Conductivity of. Soils and Rock by Thermal Needle . ASTM D – Standard Test Method for Determination of Thermal Conductivity of Soil and Soft Rock by Thermal Needle Probe Procedure. This standard is. Buy ASTM D TEST METHOD FOR DETERMINATION OF THERMAL CONDUCTIVITY OF SOIL AND SOFT ROCK BY THERMAL.

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TP08 – Hukseflux USA

Alternative models, for instance smaller, more robust or temperature resistant have been manufactured on request. Turn key systems are offered for sale: Min volume 80 ml. Some samples require pre-drilling.

Today, some 12, ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. Enter your account email address to request a password reset: F Standard Specification for Driven Fasteners: TP08 is a probe that offers the d533408 to perform a practical and fast measurement of the thermal conductivity or thermal resistivity of the medium in which it is inserted at a high accuracy level.

Nails, Spikes, and Staples. 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. The probes are calibrated once by the manufacturer before delivery.

The probe is inserted in the medium that is investigated. In some cases samples can even be smaller consult Hukseflux.

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The most common approximation method calculates thermal conductivity fron the slope of a straight line ast to the measuring data. More details on the science: The thermal conductivity of both undisturbed and remolded soil specimens as well as soft rock specimens is used to analyze and design systems used, for example, in underground transmission lines, oil and gas pipelines, radioactive waste disposal, and solar thermal storage facilities. Chosing an evaluation method is a compromise: Active view current version of standard.


Significance and Use The thermal conductivity of both undisturbed and remolded soil specimens as well as soft rock specimens is used to analyze and design systems used, for example, in underground transmission lines, oil and gas pipelines, radioactive waste disposal, and solar thermal storage facilities.

Note 1Notwithstanding 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.

See also Solutions for measurement and control: See the TP02 manual or inquire at Hukseflux. The thermal conductivity of the sample is calculated from the temperature rise with time registered by the probe. In TP08 the reference junction of the thermocouple is located in the base. A separate brochure is available. The measurement with TP08 is absolute. This test method is applicable for both undisturbed and remolded soil specimens and soft rock specimens.

The primary model of the Hukseflux product range is the TP Mathematically asfm complex approximations describe the form of the temperature curve more closely than a straight line. A correction method developed by TeKa uses the d534-08 parameters of probe and sample to automatically determine the effective amount of heat entering into the sample material.

Hukseflux is specialised in NSSP design. When using the modified method, part of the heat generated during measuring penetrates into the probe body instead of the sample material. FORMAT Single User Subscription Site License Subscription BOOKS All Books PACKAGES All Packages EDITION to PUBLISHER.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided zstm part of the standard. A long and thin heating source the needle d534-08 is inserted into a sample and is heated with constant power while recording the temperature rise with time inside the source.

The method then yields absolute thermal conductivity values without requiring any time-consuming reference or comparison measurements.


This model offers optimal measurement accuracy by a combination of its design features.

Users of this test method are cautioned that compliance with Practice D does not in itself assure reliable testing. Copyright Compu-tecture, Inc. As hard or brittle sample materials are often difficult to prepare for inserting a conventional needle probe, our modified method uses a needle embedded in the underside of a disk-shaped probe body which is just placed on top of the sample surface probe for plane surfaces.

This method may also be used for specimens containing moisture. For permanent installation in soils, a dedicated model, TP01, axtm available. Use the Mini VLQ for samples with a minimum diameter of 40 mm and a minimum length of 60 mm. Are you sure you want to empty the cart? It is recognized also that it would be unwise, because of the standardization of this test method, astk resist in any way the further development of improved or new methods or procedures by research workers.

If the results are to be reported as having been obtained by this test method, then all pertinent requirements prescribed in this test method shall be met.

Needle Probe Method According to ASTM D5334-08

This test method is suitable only for isotropic materials. No items in cart. TK04 comes with a reference material for checking the operating condition of instrument and probes from time to time.

These are done without need of reference materials. Link to Active This link will always route to the current Active version of the standard. The Mini VLQ has a measuring range of 0. Work Item s – proposed revisions of this standard. The inch-pound units given in parentheses are for information only.

Mini VLQ now available. The slower the source temperature rises, the higher is the thermal conductivity of the sample material.