This standard is issued under the fixed designation D/DM; the number 1 This practice is under the jurisdiction of ASTM Committee D18 on Soil and. GeoTesting Express is a provider of Soil Testing Services – ASTM D, Standard Practice for Thin-Walled Tube Sampling of Soils for Geotechnical Purposes. ASTM D/DM Standard Practice for Thin-Walled Tube Sampling of Fine-Grained Soils for Geotechnical Purposes. standard by.
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This sampling method is not recommended for sampling soils containing coarse sand, gravel, or larger size soil particles, cemented, or very hard soils.
This practice provides guidance on proper sampling equipment, procedures, and sample quality evaluation that are used to obtain intact samples suitable for laboratory testing. Lengths of tubes shown e1587 illustrative. For softer or harder soils C r tubes may require special order axtm the supplier. The printed version is available at half price when you buy the electronic version. It is common practice to extrude or remove the soil core either in the field or at the receiving laboratory immediately upon receipt.
Do not show this again. Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors. Other soil samplers may be used for sampling these soil types. Sands are much more difficult to penetrate and may require use of smaller diameter tubes.
Agencies that meet the criteria of Practice D are generally considered capable of competent and objective sampling. One variation is a Bishop-type thin-walled sampler that is capable of holding a vacuum on the sampler to improve recovery sstm2. Not all aspects of this practice may be applicable in all circumstances. It is not possible to buy in the shop – please contact us. The tubes are also usually supplied with a machine-beveled inside cutting edge which provides the Clearance Ratio C r.
Typical sizes of thin-walled tubes are shown on Table 1. Piston samplers in Practice D use v1587 tubes.
ASTM D, Test equipment Controls
For information on appropriate use of other soil samplers refer to Practice D Mixed soils with sands can be sampled but the presence of coarse sands asym gravels may cause soil core disturbance and tube damage. Active view current version of standard. This document cannot replace education or experience and should be used in conjunction with professional judgment.
Subsurface geotechnical explorations should be reported in accordance with practice D Advanced tests, such as consolidated, undrained triaxial compression Test Method D testing, coupled with one dimensional consolidation tests Test Methods D and D are performed for better understanding the relationship between d187 history and the strength and compression characteristics of the soil as described by Ladd and Degroot, 4. Softer formations may require sharper cutting angles of 5 to 10 degrees, however, sharp angles may be easily damaged in deeper borings.
Low-plasticity silts can be sampled but in some cases below the water table they may not be held in the tube and a piston sampler may be required to recover these soils. Such samplers include driven split barrel samplers and soil coring devices Test Methods D, D, and Practice D While the sample and push lengths are shorter than the tube, see 7.
The double-tube samplers are thicker walled and require special considerations for an outside cutting shoe and not the inner thin-walled liner tube. This ASTM standard is not intended to represent or replace the standard asym care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects.
Longer time periods may be allowed depending on logistics and the quality assurance requirements of the exploration plan.
You must be logged in to sign up for monitoring You must be logged in to sign up for subscription. This is because once the core is in contact aatm the steel tube, there are galvanic reactions between the tube and the soil which generally cause the annulus core to harden with time. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process.
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Kontakt venligst Dansk Standard. Historical Version s – view previous versions of standard. Other soil samplers may be used for sampling these soil types.
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. Use of metric equivalent is acceptable as long as thickness and proportions are similar to those required in this standard. Very stiff clays 4 generally require use of rotary soil core barrels Practice DGuide D Continue shopping Proceed to checkout. Du abonnerer allerede dette emne.
ASTM D – 00 Standard Practice for Thin-Walled Tube Sampling of Soils for Geotechnical Purposes
The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used.
This practice discusses some aspects of sample preservation after the sampling event. Are you sure you want to unsubscribe monitoring? This practice discusses some aspects of sample preservation after the sampling event. Agencies such as the U. Such samplers include driven split barrel samplers and soil coring devices Test Methods DDand Practice D For more information on preservation and transportation process of soil samples, consult Practice D These samplers use high C r tubes of 1.
See Appendix X1 for recommended techniques. Disturbance and sample quality can be evaluated by looking at recompression strains in the One-Dimensional Consolidation test see Andressen and Kolstad 5.
However, if this practice is used properly, soil samples suitable for laboratory testing can be procured. The one to two week period is just guideline typically used in practice.
The SI values given in parentheses are provided for information purposes only. Field extrusion and inspection of the soil core can also help evaluate sample quality. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.