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.
|Published (Last):||19 November 2012|
|PDF File Size:||6.69 Mb|
|ePub File Size:||4.3 Mb|
|Price:||Free* [*Free Regsitration Required]|
If you like to setup a quick demo, let us know at support madcad.
Having a d534-08 length of 70 mm, with the junction at around 17 mm from the tip, and a diameter of 1. TP08 is suitable for use by ISO certified labs. Link to Active This link will always route to the current Active version of the standard. Highly Accurate Evaluation Method The thermal conductivity of the sample is calculated from the temperature rise with time registered by the probe. It can be used where standard size probes are too large asm the available sample dimensions.
However, care must be taken to prevent significant error from: The new Mini VLQ is a 50 mm long needle probe with a diameter of 2 mm for small samples. The sample size is not c5334-08, as long as a 20 mm radius around the needle is covered.
The thermal conductivity of the sample is calculated from the temperature rise with time registered by the probe. Chosing an evaluation method is a compromise: Search book title Enter keywords for book title search.
See the TP02 manual or inquire at Hukseflux. For permanent installation in soils, a dedicated model, TP01, is available. Because of the relative importance of the thermal equilibrium between base and sample, an optional container can be ordered with TP A long and thin heating source the needle probe is inserted into a sample and is heated with constant power while recording the temperature rise with time inside the source.
In TP08 the reference junction of the thermocouple is located in the base.
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 d533-08 gas pipelines, radioactive waste disposal, and solar thermal storage facilities. Mini VLQ now available. 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.
The inch-pound units given in parentheses are for information only. This includes compressible materials like soil samples which cannot be tested with the already available Mini HLQ for plane surfaces. Min volume 80 ml. The slower the source temperature rises, the higher is the thermal conductivity of the sample material. Enter your account email address to request a password aastm Enter your personal account email address to request a password reset: Land Use and Development.
For some applications however the requirements regarding the sample size are such that the needle length and diameter of the TP02 are too large. This d53334-08 method is suitable only for isotropic materials. This model offers optimal measurement accuracy by a combination of its design features. The NSSP principle relies on a unique property of a line source: This test method is applicable for both undisturbed and remolded soil specimens and soft rock specimens.
Print 1 2 3 4 5 page sstarting from page current page. Hukseflux is specialised in NSSP design. 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.
There were no books found for the applied search filters. A correction method developed by TeKa uses the thermal parameters of probe and sample to automatically determine the effective amount of heat entering into the sample material. Optimal accuracy Temperature sensor in the base.
Downloads Download Product Manual. 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. F Standard Specification for Driven Fasteners: In general a NSSP consists of a heating wire, representing a perfect line source, and a temperature sensor capable of measuring asstm temperature at this source.
The most common approximation method calculates thermal conductivity fron the d53344-08 of a straight line fitted to the measuring data. The probes are calibrated once by the manufacturer before delivery. Remember me for one month. X5334-08 improves reliability significantly, because thermal conductivity measurements are very sensitive to sample preparation problems and instable measuring conditions.
TP08 is a probe that offers the possibility 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.
Alternative models, for instance smaller, more robust or temperature resistant have been manufactured on request. When using the modified method, part of the heat generated during measuring penetrates into the probe body instead of the sample material.
Standardization of this test method does not reduce the need for such technical knowledge. These are done without need of reference materials. This method may also be used for specimens astk moisture. The measurement with TP08 is absolute. Active view current version of standard. TK04 can use both methods by simply changing the connected probe. The probe is inserted in the medium that is investigated.
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.