ASTM D6390-99
(Test Method)Standard Test Method for Determination of Draindown Characteristics in Uncompacted Asphalt Mixtures
Standard Test Method for Determination of Draindown Characteristics in Uncompacted Asphalt Mixtures
SCOPE
1.1 This test method covers the determination of the amount of draindown in an uncompacted asphalt mixture sample when the sample is held at elevated tempertures comparable to those encountered during the production, storage, transport, and placement of the mixture. The test is particularly applicable to mixtures such as porous asphalt (open-graded friction course) and stone matrix asphalt (SMA).
1.2 The values stated in SI units are to be regarded as 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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Designation:D6390–99
Standard Test Method for
Determination of Draindown Characteristics in
Uncompacted Asphalt Mixtures
This standard is issued under the fixed designation D 6390; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope separates itself from the sample as a whole and is deposited
outside the wire basket during the test. The material which
1.1 This test method covers the determination of the amount
drains may be composed of either asphalt binder or a combi-
of draindown in an uncompacted asphalt mixture sample when
nation of asphalt binder, additives, or fine aggregate.
thesampleisheldatelevatedtemperaturescomparabletothose
encountered during the production, storage, transport, and
4. Summary of Test Method
placement of the mixture. The test is particularly applicable to
4.1 Asample of the asphalt mixture to be tested is prepared
mixtures such as porous asphalt (open-graded friction course)
in the laboratory or obtained from field production.The sample
and stone matrix asphalt (SMA)
is placed in a wire basket which is positioned on a plate or
1.2 The values stated in SI units are to be regarded as the
other suitable container of known mass. The sample, basket,
standard.
and plate or container are placed in a force draft oven for one
1.3 This standard does not purport to address all of the
hour at a pre-selected temperature. At the end of one hour, the
safety concerns, if any, associated with its use. It is the
basket containing the sample is removed from the oven along
responsibility of the user of this standard to establish appro-
with the plate or container and the mass of the plate or
priate safety and health practices and determine the applica-
containercontainingthedrainedmaterial,ifany,isdetermined.
bility of regulatory limitations prior to use.
The amount of draindown is then calculated.
2. Referenced Documents
5. Significance and Use
2.1 ASTM Standards:
5.1 This test method can be used to determine whether the
C 670 Practice for Preparing Precision and Bias Statements
2 amount of draindown measured for a given asphalt mixture is
for Test Methods for Construction Materials
3 within specified acceptable levels. The test provides an evalu-
D 979 Practice for Sampling Bituminous Paving Mixtures
ation of the draindown potential of an asphalt mixture during
D 1559 Test Method for Resistance to Plastic Flow of
3 mixture design and/or during field production. This test is
Bituminous Mixtures Using Marshall Apparatus
primarily used for mixtures with high coarse aggregate content
D 4753 Test Method for Evaluating, Selecting, and Speci-
such as porous asphalt (open-graded friction course) and stone
fying Balances and Scales, for Use in Testing Soil, Rock,
4 matrix asphalt (SMA).
and Related Construction Materials
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
6. Apparatus
poses
6.1 Forced Draft Oven, capable of maintaining the tempera-
ture in a range from 120 to 175°C. The oven should maintain
3. Terminology
the set temperature to within 6 2°C.
3.1 Definitions:
6.2 Plates, or other suitable containers of appropriate size.
3.1.1 draindown—for the purpose of this test method,
The plates or containers used should be of appropriate dura-
draindown is considered to be that portion of material which
bility to withstand the oven temperatures. Cake pans or pie tins
are examples of suitable types of containers.
This test method is under the jurisdiction of ASTM Committee D-4 on Road 6.3 Standard basket meeting the dimensions shown in Fig.
and Paving Materials and is the direct responsibility of Subcommittee D04.25 on
1.The basket shall be constructed using standard 6.3 mm sieve
Analysis of Bituminous Mixtures.
cloth as specified in Specification E 11.
Current edition approved Feb. 10, 1999. Published June 1999.
6.4 Balance—Abalance readable to 0.1g and conforming to
Annual Book of ASTM Standards, Vol 04.02.
Annual Book of ASTM Standards, Vol 04.03.
the requirements of Specification D 4753, GP2.
Annual Book of ASTM Standards, Vol 04.08.
Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D6390
Place the aggregate samples in an oven and heat to a tempera-
ture not to exceed the temperature established in 7.1.1.
7.1.5 Heat the asphalt binder to the temperature established
in 7.1.1.
7.1.6 Place the heated aggregate in the mixing bowl. Add
any stabilizers (see Note 2) and thoroughly mix the dry
components. Form a crater in the aggregate blend and add the
required amount of asphalt binder. The amount of asphalt
binder shall be such that the final sample has the same asphalt
content as the job-mix formula. At this point, the temperature
of the aggregate and asphalt binder shall be at the temperature
determined in 7.1.1. Mix the aggregate (and stabilizer if any)
and asphalt binder quickly until the aggregate is thoroughly
coated.
7.2 Plant Produced Samples:
7.2.1 Number of Samples—For plant produced samples,
triplicate samples should be tested at the plant production
temperature.
7.2.2 Samples should be obtained in accordance with Prac-
tice D 979 during plant production by sampling the mixture at
any appropriate location such as the trucks prior to the mixture
leaving the plant. Samples obtained during actual production
should be reduced to the proper test sample size.
NOTE 1—When using the test as part of the mixture design procedure,
the test should be performed at two temperatures in order to determine the
potential effect that plant temperature variation may have on the mixture
during production. When the test is used in the field durin
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