ASTM D2489/D2489M-16
(Test Method)Standard Test Method for Estimating Degree of Particle Coating of Asphalt Mixtures
Standard Test Method for Estimating Degree of Particle Coating of Asphalt Mixtures
SIGNIFICANCE AND USE
4.1 The procedure in this test method for estimating the percentage of coated particles after varying mixing times is used to establish the least mixing time required to produce satisfactory coating for a given set of conditions. This procedure can also be used to sample cold mixtures from stockpiles to determine that satisfactory coating has been retained in the stockpile.
4.2 This procedure is used with asphalt mixtures or with cold-mixed, cold-laid asphalt paving mixtures such as specified in Specification D4215.
Note 1: Even when a paving mixture complies with the “percent of coated particles” that may be specified, there is no assurance that the asphalt cement is uniformly distributed throughout the mixture.
4.3 This test method should not be used for acceptance/rejection by owner agencies.
SCOPE
1.1 This test method provides an estimate of the degree of particle coating in an asphalt-aggregate mixture on the basis of the percentage of coarse particles classified as being completely coated.
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 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.
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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.
Designation: D2489/D2489M − 16
Standard Test Method for
1
Estimating Degree of Particle Coating of Asphalt Mixtures
This standard is issued under the fixed designation D2489/D2489M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.2 For descriptions of mixing plant terms, see Mixing
Plants, Specification D995.
1.1 This test method provides an estimate of the degree of
particle coating in an asphalt-aggregate mixture on the basis of
4. Significance and Use
the percentage of coarse particles classified as being com-
pletely coated. 4.1 The procedure in this test method for estimating the
percentage of coated particles after varying mixing times is
1.2 The values stated in either SI units or inch-pound units
used to establish the least mixing time required to produce
are to be regarded separately as standard. The values stated in
satisfactory coating for a given set of conditions. This proce-
each system may not be exact equivalents; therefore, each
dure can also be used to sample cold mixtures from stockpiles
system shall be used independently of the other. Combining
to determine that satisfactory coating has been retained in the
values from the two systems may result in nonconformance
stockpile.
with the standard.
4.2 This procedure is used with asphalt mixtures or with
1.3 This standard does not purport to address all of the
cold-mixed,cold-laidasphaltpavingmixturessuchasspecified
safety concerns, if any, associated with its use. It is the
in Specification D4215.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
NOTE 1—Even when a paving mixture complies with the “percent of
bility of regulatory limitations prior to use. coated particles” that may be specified, there is no assurance that the
asphalt cement is uniformly distributed throughout the mixture.
2. Referenced Documents
4.3 This test method should not be used for acceptance/
2
2.1 ASTM Standards:
rejection by owner agencies.
D8 Terminology Relating to Materials for Roads and Pave-
ments
5. Apparatus
D979 Practice for Sampling Bituminous Paving Mixtures
3
5.1 Sieves, 9.5 mm [ ⁄8 in.] and 4.75 mm [No. 4]. The sieves
D995 Specification for Mixing Plants for Hot-Mixed, Hot-
3 shall conform to Specification E11.
Laid Bituminous Paving Mixtures (Withdrawn 2009)
5.2 Stopwatch, for checking actual mixing time of batch
D3665 Practice for Random Sampling of Construction Ma-
plants.
terials
D4215 Specification for Cold-Mixed, Cold-Laid Bituminous
5.3 Thermometer, range at least from 10 °C [50 °F] to
Paving Mixtures
204 °C [400 °F].
E11 Specification for Woven Wire Test Sieve Cloth and Test
5.4 Sample Shovel.
Sieves
5.5 Sample Trays.
3. Terminology
3.1 For definitions of terms, see Terminology D8.
6. Sampling
6.1 Batch Plant—Permit the plant to operate at an estab-
1
This test method is under the jurisdiction of ASTM Committee D04 on Road
lished mixing time per batch (timed by a stopwatch).
and Paving Materials and is the direct responsibility of Subcommittee D04.23 on
Plant-Mixed Asphalt Surfaces and Bases.
6.2 Continuous Mix Plant—Establish a mixing time by use
Current edition approved Dec. 1, 2016. Published December 2016. Originally
of the following formula:
approved in 1966. Last previous edition approved in 2008 as D2489/D2489M – 08.
DOI: 10.1520/D2489_D2489M-16.
mixing time 5 pug mill contents, kg lb /pug mill output, kg/s lb/s
@ # @ #
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
(1)
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
6.3 Drum Mix Plant—Operate the plant at a steady state
the ASTM website.
3 condition for a period of time long enough to complete the
The last approved version of this historical standard is referenced on
www.astm.org. sampling.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2489/D2489M − 16
6.4 Samplesshouldbetakenatthesiteoftheasphaltmixing 7.2 Place particles on a clean surface in a one-particle layer
plant immediately after discharge from the plant from three and start count immediately.
truck loads selected at random in accordance with Practice
7.3 Very carefully examine each particle under direct
D3665 and sampled in accordan
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2489/D2489M − 08 D2489/D2489M − 16
Standard Practice for Test Method for
Estimating Degree of Particle Coating of Bituminous-
1
AggregateAsphalt Mixtures
This standard is issued under the fixed designation D2489/D2489M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This practice provides an estimate of the degree of particle coating in a bituminous-aggregate mixture on the basis of the
percentage of coarse particles classified as being completely coated.
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 non-conformance with the standard.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
D8 Terminology Relating to Materials for Roads and Pavements
D979 Practice for Sampling Bituminous Paving Mixtures
3
D995 Specification for Mixing Plants for Hot-Mixed, Hot-Laid Bituminous Paving Mixtures (Withdrawn 2009)
D3665 Practice for Random Sampling of Construction Materials
D4215 Specification for Cold-Mixed, Cold-Laid Bituminous Paving Mixtures
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
3. Terminology
3.1 For definitions of terms, see Terminology D8.
3.2 For descriptions of mixing plant terms, see Mixing Plants, Specification D995.
4. Significance and Use
4.1 The procedure in this practice for estimating the percentage of coated particles after varying mixing times is used to establish
the least mixing time required to produce satisfactory coating for a given set of conditions. This procedure can also be used to
sample cold mixtures from stockpiles to determine that satisfactory coating has been retained in the stockpile.
4.2 This procedure is used with hot-mixed, hot-laid bituminous paving mixtures or with cold-mixed, cold-laid bituminous
paving mixtures such as specified in Specification D4215.
NOTE 1—Even when a paving mixture complies with the “percent of coated particles” that may be specified, there is no assurance that the asphalt
cement is uniformly distributed throughout the mixture.
4.3 This practice should not be used for acceptance/rejection by owner agencies.
1
This practice test method is under the jurisdiction of ASTM Committee D04 on Road and Paving Materials and is the direct responsibility of Subcommittee D04.23 on
Plant-Mixed BituminousAsphalt Surfaces and Bases.
Current edition approved Dec. 1, 2008Dec. 1, 2016. Published December 2008December 2016. Originally approved in 1966. Last previous edition approved in 20022008
as D2489 – 02.D2489/D2489M – 08. DOI: 10.1520/D2489_D2489M-08.10.1520/D2489_D2489M-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2489/D2489M − 16
5. Apparatus
3
5.1 Sieves, 9.5 mm [ ⁄8 in.] and 4.75 mm [No. 4]. The sieves shall conform to Specification E11.
5.2 Stopwatch, for checking actual mixing time of batch plants.
5.3 Thermometer, range at least from 10°C [50°F] to 204°C [400°F].
5.4 Sample Shovel.
5.5 Sample Trays.
6. Sampling
6.1 Batch Plant—Permit the plant to operate at an established mixing time per batch (timed by a stopwatch).
6.2 Continuous Mix Plant—Establish a mixing time by use of the following formula:
mixing time 5 pug mill contents, kg lb /pug mill output, kg/s lb/s (1)
@ # @ #
6.3 Drum Mix Plant—Operate the plant at a steady state condition for a period of time long enough to complete the sampling.
6.4 Samples should be taken at the site of the bituminous mixing plant imme
...
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