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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Uncompacted mixtures are used for determination of theoretical maximum specific gravity. Last asgm edition approved in as D—04 D66926 However, care should be exercised to prevent mix loss. The steel cap shall be firmly fastened to the post. Charge the mixing container with the heated aggregate and dry mix thoroughly approximately 5 s with scoop or spoon. Current edition approved June 15, 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.
The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
After cooling, separate the aggregates by dry-sieving into the desired size fractions. Dial thermometer may exhibit inaccuracies due to frequently use or mishandling. Allow the specimen to cool sufficiently to prevent damage and extract the specimen from the mold.
This method must be used as a referee method. s6926
ASTM D – 10 Standard Practice for Preparation of Bituminous Specimens Using Marshall Apparatus
Any cut aggregate can be removed. 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.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Mechanical hammers are available that operate at 1 nominal 55 blows per minute or 2 equal to or greater than 75 blows per minute.
Please first log in with a verified email before subscribing to alerts. An example of a viscosity temperature chart is atm in Fig. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
It is up to the dd6926 to establish the specific required number of blows to be used for compaction of the specimen in relation to the field.
ASTM D – Free Download PDF
Suitable shields, baffle plates, or sand baths shall be used on the surfaces of the hot plates to minimize localized overheating. There may or may not be a constant surcharge on top of the hammer handle. Care must be exercised to prevent loss of the mix during mixing and subsequent handling. The following types of hammer arrangements are included in this practice: Users of this practice are cautioned that compliance with Specification D alone does not completely ensure reliable results. We need your help to maintenance this website.
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. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn.
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.
Please help us to share our service with your friends. For asphalt cements and tar mixtures, put the samples into metal containers and cover.
Place another piece of nonabsorbent paper cut to fit on top of the mix. Your Alert Profile lists the documents that will be monitored. Historical Version s – view previous versions of standard. The user should contact the manufacturer to establish appropriate mixing and compaction temperature ranges.
Please copy and paste this embed script to where you want to embed Embed Script. Place the covered metal containers in a ventilated oven at the temperature established in 5. Please first verify your email before subscribing to alerts. Permission rights to photocopy the standard may also be secured from the ASTM website www.
Need more than one copy? Mechanical hammers are available that operate at 1 nominal 55 blows per minute and 2 equal to or greater than 75 blows per minute.
Multiple hammer operation will affect specimen density and is not recommended. This standard is not included in any packages. NOTE 7—Hammer shaft should be clean and lightly oiled. The compaction 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.
The reheating process will have only minor influence on binder hardening. Already Subscribed to this document. Link to Active This link will always route to the current Active version of the standard.
In this original Marshall procedure, no mechanical device of any kind shall be used to restrict the handle of the hammer in the vertical position during compaction. As the voice of the U. 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.
Best comparative results will be obtained by compacting all specimens with the same hammer and with no other hammers operating. A rotating mechanism is incorporated in the base. Form a crater in the dry blended aggregate and weigh the required amount of bituminous material at asrm temperature into the mixture.