Preparation of Bituminous Specimens Using Marshall Apparatus. ASTM D – Download as PDF File .pdf), Text File .txt) or read online. Designation: D – 10Standard Practice for Preparation of Bituminous.
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Form a crater in the dry blended aggregate and weigh the required amount of bituminous material at mixing temperature into the mixture. Place the mixture in the mold, spade the mixture vigorously with a heated spatula or trowel 15 times around the perimeter and 10 times over the interior.
Significance and Use 3. The following types of hammer arrangements are included in this practice:. Carefully transfer specimens to a smooth, flat surface and allow to cool qstm room temperature this may be overnight.
This standard is not included in any packages. Mechanical hammers are available that operate at 1 nominal 55 blows per minute or 2 equal to or greater than 75 blows per minute. D — 10 hammer by hand, as nearly perpendicular as possible to the base of the mold assembly during compaction. Thank you for interesting in our services.
Specimen mold-holders of multi-hammer compactors are not necessarily centered. We need your help to maintenance this website.
Armored-glass or dial-type thermometers with asstm stems are recommended. The mix may be stirred in the mixing bowl during curing to accelerate the solvent loss. Need more than one copy? Users of this practice are cautioned that compliance with Specification D alone does not completely ensure reliable results.
Uncompacted mixtures are used for determination of theoretical maximum specific gravity. You may delete a document from your Alert Profile at any time. To facilitate extraction, the mold and specimen can be briefly immersed in a hot water bath to heat the metal mold and r6926 specimen distortion. A number in parentheses indicates the year of last reapproval. Specimens should be accepted or rejected for further testing based on requirements of the criteria being applied.
The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
Cooling specimens in the mold can be facilitated by immersion in cold water. Please first log in with a verified email before subscribing to alerts. The user should contact the manufacturer to establish appropriate mixing and compaction temperature ranges. Hand mix to ensure uniformity and quarter into c6926 sample size to conform to aztm height requirements.
Link to Active This link will always route to the current Active version of the standard. The reheating process will have only minor influence on binder hardening. It is up to the owner or specifier to establish the specific required number of blows to be used d6962 compaction of the specimen in relation to the field.
NOTE 4—Standardization astn specified in Specification D are recommended for the thermometer used in this test method.
Any suitable extraction device such as a hydraulic jack apparatus or a lever arm device may be used, provided the specimens are not deformed e6926 the extraction process. After cooling, separate the aggregates by dry-sieving into the desired size fractions. At this point, atm mixture temperature shall be within the limits of the mixing temperature established in 5.
Add to Alert PDF. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard. Last previous edition approved in as D—04 DOI: It is up to the d926 to establish the specific required number of blows to be used for compaction of the specimen in relation to the field. Current edition approved June 15, Work Item s – proposed revisions of this standard.
ASTM D Standard
Mix the aggregate and bituminous material rapidly until thoroughly coated for approxi- 5. Please copy and paste this embed script to where you want to embed Embed Script. Place a piece of nonabsorbent paper, cut to size, in the bottom of the mold before the mixture is introduced. Apply the same number of compaction blows to the face of the reversed specimen. For asphalt cements and tar mixtures, put the samples into metal containers and cover.
The steel disk is used for extracting compacted specimens from molds with the use of the mold collar. A rotating mechanism is incorporated in ast base.
The pedestal assembly shall be installed so that the post is plumb and the cap is level. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard. In preparation for heating to compaction temperature the material should be warmed and worked until a loose mixture condition is obtained.
This method must be used as a referee method.
However, care should be exercised to prevent mix loss. Permission rights to photocopy the standard may also be secured from the ASTM website www. Best comparative results will be obtained by compacting all specimens with the same hammer and with no other hammers operating.