ASTM D6926 PDF
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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NOTE 1—Uncompacted mixtures are used for determination of theoretical maximum specific gravity. Add to Alert PDF.
ASTM D – 04 Standard Practice for Preparation of Bituminous Specimens Using Marshall Apparatus
Historical Version s – view previous versions of standard. The wstm temperature is determined from the viscosity temperature chart as that to which the cutback asphalt must be heated to produce a viscosity of 6 30 cP 0. Carefully transfer specimens to a smooth, flat surface and allow to cool at room temperature this may be overnight.
NOTE 4—Standardization practices specified in Specification D are recommended for the thermometer used in this test method. The mix may be stirred in the mixing bowl during curing to accelerate the solvent loss.
The steel cap shall be firmly fastened to the post.
Originally approved in Please first verify your email before subscribing to alerts. A metal pan or bowl of sufficient capacity for hand mixing may also be used. D — 10 hammer by hand, as nearly perpendicular as possible to the base of the mold assembly during compaction.
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.
Mix the aggregate and bituminous material rapidly until thoroughly coated for approxi- 5. Hand mix to ensure uniformity and quarter into appropriate sample size to conform to specimen height requirements. NOTE 7—Hammer shaft should be clean and lightly oiled.
Charge the mixing container with the heated aggregate and dry mix thoroughly approximately 5 s with scoop or spoon. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
As the voice of the U. Specimen mold-holders of multi-hammer compactors are not necessarily centered. It is up to the owner or specifier to establish the specific required number of blows to be used for compaction of the specimen in relation to the field. Already Subscribed to this document. The holders shall hold the compaction mold, collar, and base plate securely in position during compaction of the specimen. A fan can be used to facilitate cooling.
Place the covered metal containers in a ventilated oven at the temperature established in 5. Place aggregate batches in containers on a hot plate or in an oven and heat to a temperature above but not exceeding the mixing temperature established in 5. This standard is also available to be included in Standards Subscriptions. Form a crater in the dry blended aggregate and weigh the required amount of bituminous material at mixing temperature into the mixture.
The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
Size px x x x x The quality of the results produced by this practice are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used.
These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard. The reheating process will have only minor influence on binder hardening.
You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. To facilitate extraction, the mold and specimen can be briefly immersed in a hot water bath to heat the metal mold and reduce specimen distortion.
Reliable results depend on many factors; following the suggestions of Specification D or some similar acceptable guideline provides a means of evaluating and controlling some of those factors. Specimens should be accepted or rejected for further d69266 based on requirements of the criteria being applied. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Link to Active This link will always route to the current Active version of the standard. Thank you for interesting in d926 services.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard.
However, care should be exercised to prevent mix loss. Place a piece of nonabsorbent paper, cut to size, in the bottom of the mold before the mixture is introduced. If the document is revised or amended, you will be notified by email. In preparation for asttm to compaction temperature the material should be warmed and worked until a loose mixture condition is obtained.
Stability of reheated and recompacted mixtures from existing pavements is likely to be higher than the original mixture due to in service d696 of the binder. A rotating mechanism is incorporated in the base. Place another piece of nonabsorbent paper cut to fit on top of the mix. S6926 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.
For asphalt cements and tar mixtures, put the samples into metal containers and cover.
This method must be used as a referee method. Need more than one copy? Density and void analysis ashm also conducted on specimens for mixture design and evaluation of field compaction.