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ASTM D7226-11

Historical Revision

Standard Test Method for Determining the Viscosity of Emulsified Asphalts Using a Rotational Paddle Viscometer

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1.1 This test method uses a paddle rotational viscometer to measure the apparent viscosity of emulsified asphalt with viscosities between 30 and 1500 mPa·s (centipoises) at 50°C (122°F). It is applicable to all emulsified asphalt described in Specifications D977 and D2397.

1.2 The values given in SI units are to be considered the standard. The values given in parentheses are for information only.

1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.

The viscosity of emulsified asphalts characterizes their flow properties and affects their utility at 50°C (122°F) or at other temperatures. An emulsified asphalt sprayability and workability is directly related to their viscosity for many applications types. The material must be thin enough to be sprayed yet thick enough such that it will not flow from the crown or grade of the road. For mixing grade emulsified asphalts the viscosity will affect its workability and resulting film thickness on the aggregate. This test method is useful to measure the apparent viscosity of emulsified asphalt at a temperature of 50°C (122°F) or another agreed-upon temperature. The preset temperature and rotational speed at 100 RPM allow for an automated and consistent determination of an emulsified asphalt viscosity within a short time.

SDO ASTM: ASTM International
Document Number D7226
Publication Date Dec. 1, 2011
Language en - English
Page Count 5
Revision Level 11
Supercedes
Committee D04.42
Publish Date Document Id Type View
Oct. 1, 2024 D7226-24 Revision
Dec. 1, 2013 D7226-13 Revision
Dec. 1, 2011 D7226-11 Revision
Dec. 1, 2010 D7226-10 Revision
Jan. 1, 2006 D7226-06E01 Revision
Jan. 1, 2006 D7226-06 Revision
March 1, 2023 D7226-13R23 Reaffirmation
Oct. 1, 2017 D7226-13R17 Reaffirmation