ASTM D2489/D2489M-08
(Practice)Standard Practice for Estimating Degree of Particle Coating of Bituminous-Aggregate Mixtures
Standard Practice for Estimating Degree of Particle Coating of Bituminous-Aggregate Mixtures
SIGNIFICANCE AND USE
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.
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 D 4215.
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.
This practice should not be used for acceptance/rejection by owner agencies.
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.
General Information
Relations
Buy Standard
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D2489/D2489M − 08
Standard Practice for
Estimating Degree of Particle Coating of Bituminous-
1
Aggregate 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. Terminology
1.1 This practice provides an estimate of the degree of 3.1 For definitions of terms, see Terminology D8.
particle coating in a bituminous-aggregate mixture on the basis
3.2 For descriptions of mixing plant terms, see Mixing
of the percentage of coarse particles classified as being
Plants, Specification D995.
completely coated.
4. Significance and Use
1.2 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in
4.1 The procedure in this practice for estimating the per-
each system may not be exact equivalents; therefore, each
centage of coated particles after varying mixing times is used
system shall be used independently of the other. Combining
to establish the least mixing time required to produce satisfac-
values from the two systems may result in non-conformance
tory coating for a given set of conditions. This procedure can
with the standard.
also be used to sample cold mixtures from stockpiles to
determine that satisfactory coating has been retained in the
1.3 This standard does not purport to address all of the
stockpile.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4.2 This procedure is used with hot-mixed, hot-laid bitumi-
priate safety and health practices and determine the applica-
nouspavingmixturesorwithcold-mixed,cold-laid bituminous
bility of regulatory limitations prior to use.
paving mixtures such as specified in Specification D4215.
NOTE 1—Even when a paving mixture complies with the “percent of
2. Referenced Documents
coated particles” that may be specified, there is no assurance that the
2
2.1 ASTM Standards: asphalt cement is uniformly distributed throughout the mixture.
D8 Terminology Relating to Materials for Roads and Pave-
4.3 This practice should not be used for acceptance/
ments
rejection by owner agencies.
D979 Practice for Sampling Bituminous Paving Mixtures
D995 Specification for Mixing Plants for Hot-Mixed, Hot- 5. Apparatus
3
Laid Bituminous Paving Mixtures (Withdrawn 2009)
3
5.1 Sieves, 9.5 mm [ ⁄8 in.] and 4.75 mm [No. 4]. The sieves
D3665 Practice for Random Sampling of Construction Ma-
shall conform to Specification E11.
terials
5.2 Stopwatch, for checking actual mixing time of batch
D4215 Specification for Cold-Mixed, Cold-Laid Bituminous
plants.
Paving Mixtures
E11 Specification for Woven Wire Test Sieve Cloth and Test 5.3 Thermometer, range at least from 10°C [50°F] to 204°C
Sieves
[400°F].
5.4 Sample Shovel.
5.5 Sample Trays.
1
This practice is under the jurisdiction of ASTM Committee D04 on Road and
Paving Materials and is the direct responsibility of Subcommittee D04.23 on
6. Sampling
Plant-Mixed Bituminous Surfaces and Bases.
Current edition approved Dec. 1, 2008. Published December 2008. Originally
6.1 Batch Plant—Permit the plant to operate at an estab-
approved in 1966. Last previous edition approved in 2002 as D2489 – 02. DOI:
lished mixing time per batch (timed by a stopwatch).
10.1520/D2489_D2489M-08.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.2 Continuous Mix Plant—Establish a mixing time by use
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
of the following formula:
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
mixing time 5 pug mill contents, kg lb /pug mill output, kg/s lb/s
3 @ # @ #
The last approved version of this historical standard is referenced on
www.astm.org. (1)
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2489/D2489M − 08
3
6.3 Drum Mix Plant—Operate the plant at a steady state on the 9.5-mm [ ⁄8-in.] or 4.75-mm [No. 4] sieve. Do not
condition for a period of time long enough to complete the overload the sieves. If necessary, sieve the sample in two or
sampling. three operations. Reduce shaking to a minimum to prevent
recoating of uncoated particles.
6.4 Samples should be taken at the site of the bituminous
mixing plant immediately after discharge from the plant from 7.2 Place particles on a clean surface in a one-particle layer
three truck loads selected at random in accordance with and start count immediat
...
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:D2489–02 Designation: D 2489/D 2489M – 08
Standard Practice for
Estimating Degree of Particle Coating of Bituminous-
1
Aggregate Mixtures
This standard is issued under the fixed designation D 2489/D 2489M; 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.
1.2The values stated in SI units are regarded as being standard.
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:
D 8 Terminology Relating to Materials for Roads and Pavements
D 979 Practice for Sampling Bituminous Paving Mixtures
2
D 995Specification for Mixing Plants for Hot-Mixed, Hot-Laid Bituminous Paving Mixtures
2
D3515Specification for Hot-Mixed, Hot-Laid Bituminous Paving Mixtures Specification for Mixing Plants for Hot-Mixed,
Hot-Laid Bituminous Paving Mixtures
D 3665 Practice for Random Sampling of Construction Materials
D 4215 Specification for Cold-Mixed, Cold-Laid Bituminous Paving Mixtures
E 11 Specification for Wire Cloth and Sieves for Testing Purposes
3. Terminology
3.1 For definitions of terms, see Terminology D 8.
3.2 For descriptions of mixing plant terms, see Mixing Plants, Specification D 995.
4. Significance and Use
4.1The4.1 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 such as specified in Specification D3515 or
with cold-mixed, cold-laid bituminous paving mixtures such as specified in Specification D 4215.
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.
5. Apparatus
3
5.1 Sieves, 9.5 mm ([ ⁄8 in.)in.] and 4.75 mm (No. 4).[No. 4]. The sieves shall conform to Specification E 11.
1
This practice is under the jurisdiction ofASTM Committee D04 on Road and Paving Materials and is the direct responsibility of Subcommittee D04.23 on Plant-Mixed
Bituminous Surfaces and Bases.
Current edition approved July 10, 2002. Published October 2002. Originally published as D2489–66 T. Last previous edition D2489–00.
Current edition approved Dec. 1, 2008. Published December 2008. Originally approved in 1966. Last previous edition approved in 2002 as D 2489 – 02.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM Standards
, Vol 04.03.volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D 2489/D 2489M – 08
5.2 Stopwatch, for checking actual mixing time of batch plants.
5.3 Thermometer, range at least from 10°C (50°F)[50°F] to 204°C (400°F). [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
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.