ASTM D421 PDF

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Copyright ASTM. Dry Preparation of Soil Samples for Particle-Size Analysis and Determination of Soil Constants1 This standard is issued under the xed designation D ; 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 e indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. Scope 1. 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. Referenced Documents 2. Signicance and Use 3. Apparatus 4.

The sieves required are as follows: No. Sampling 5. Break up the aggregations thoroughly in the mortar with a rubber-covered pestle. Select a representative sample of the amount required to perform the desired tests by the method of quartering or by the use of a sampler. The amounts of material required to perform the individual tests are as follows: 5. Current edition approved July 26, Published September Originally published as D 35 T.

Last previous edition D 58 e 1. Preparation of Test Sample 6. Separate the test sample by sieving with a No. Grind that fraction retained on the No. Then separate the ground soil into two fractions by sieving with a No. Record this mass as the mass of coarse material. Sieve the coarse material, after being washed and dried, on the No.

Test Sample for Particle-Size Analysis 7. D weighing approximately g for sandy soils and approximately 65 g for silt and clay soil for particle-size analysis. Test Sample for Soil Constants 8.

Discard the fraction retained on the No. Use the fraction passing the No. Keywords 9. The American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Learn more about Scribd Membership Home.

Much more than documents. Discover everything Scribd has to offer, including books and audiobooks from major publishers. Start Free Trial Cancel anytime. D astm. Uploaded by Maryono Asr. Document Information click to expand document information Description: astm standard D Date uploaded Jun 19, Did you find this document useful?

Is this content inappropriate? Report this Document. Description: astm standard D Flag for Inappropriate Content. Download Now. Related titles. Carousel Previous Carousel Next. Jump to Page. Search inside document. Copyright ASTM Standard Practice for Dry Preparation of Soil Samples for Particle-Size Analysis and Determination of Soil Constants1 This standard is issued under the xed designation D ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

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Copyright ASTM. Dry Preparation of Soil Samples for Particle-Size Analysis and Determination of Soil Constants1 This standard is issued under the xed designation D ; 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 e indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. Scope 1.

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