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ASTM D2171/D2171M-22
Standard Test Method for Viscosity of Asphalts by Vacuum Capillary Viscometer
NORMA vydaná dňa 1.11.2022
Informácie o norme:
Označenie normy: ASTM D2171/D2171M-22
Dátum vydania normy: 1.11.2022
Kód tovaru: NS-1089351
Počet strán: 10
Približná hmotnosť: 30 g (0.07 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM D2171/D2171M-22 :
Keywords:
asphalt, capillary, vacuum, viscometer, viscosity,, ICS Number Code 91.100.50 (Binders. Sealing materials),93.080.20 (Road construction materials)
Doplňujúce informácie
| Significance and Use | ||||||
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5.1?The viscosity at 60 ?C [140 ?F] characterizes flow behavior and may be used for specification requirements for cutback asphalt and asphalt binders. Note 3:?The quality of the results produced by this standard
are dependent on the competence of the personnel performing the
procedure and the capability, calibration, and maintenance of the
equipment used. Agencies that meet the criteria of Specification
D3666 are generally
considered capable of competent and objective testing, sampling,
inspection, etc. Users of this standard are cautioned that
compliance with Specification D3666 alone does not completely ensure
reliable results. Reliable results depend on many factors;
following the suggestions of Specification D3666 or some similar acceptable
guideline provides a means of evaluating and controlling some of
those factors.
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| 1. Scope | ||||||
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1.1?This test method covers procedures for the determination of the apparent viscosity of asphalt binder by vacuum capillary viscometers at 60 ?C [140 ?F]. It is applicable to materials having viscosities in the range from 0.0036 to over 20 000 Pa?s [0.036 to over 200 000 P]. Note 1:?This test method is suitable for use at other
temperatures, but the precision is based on determinations on
asphalt binders at 60 ?C [140 ?F].
Note 2:?Modified asphalt binders or asphalt binders that have
been conditioned or recovered are typically non-Newtonian under the
conditions of this test. The apparent viscosity for non-Newtonian
asphalt binders varies with shear rate. When the flow is
non-Newtonian in a capillary tube, the shear rate determined using
this test method may be invalid. The presence of non-Newtonian
behavior for the test conditions of this test can be verified by
measuring the viscosity with viscometers having different-sized
capillary tubes or with different pressure heads. The defined
precision limits in Section 11 may not be applicable to non-Newtonian
asphalt binders. Test Method D4957 may be a more applicable method for
testing non-Newtonian asphalts.
1.2?The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.3?WarningMercury has been designated by the United States Environmental Protection Agency (EPA) and many state agencies as a hazardous material that can cause central nervous system, kidney, and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury-containing products. See the applicable product Material Safety Data Sheet (MSDS) or Safety Data Sheet (SDS) for details and the EPAs websitehttp://www.epa.gov/mercury/faq.htmfor additional information. Users should be aware that selling mercury, mercury-containing products, or both, in your state may be prohibited by state law. 1.4?The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.5?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| 2. Referenced Documents | ||||||
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