ASTM D979-96
(Practice)Standard Practice for Sampling Bituminous Paving Mixtures
Standard Practice for Sampling Bituminous Paving Mixtures
SCOPE
1.1 This practice covers sampling of bituminous paving mixtures at points of manufacture, storage, delivery, or in place.
1.2 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.
1.3 The values stated in SI units are to be regarded as the standard. The values in parentheses are provided for information purposes only.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
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Designation: D 979 – 96
Standard Practice for
Sampling Bituminous Paving Mixtures
This standard is issued under the fixed designation D 979; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope same process (for example, a day’s production or a specific
mass of volume).
1.1 This practice covers sampling of bituminous paving
3.1.4 test portion, n—a quantity of the material of sufficient
mixtures at points of manufacture, storage, delivery, or in
size extracted from the larger field sample by a procedure
place.
designed to ensure accurate representation of the field sample,
1.2 This standard does not purport to address all of the
and thus of the unit sampled.
safety concerns, if any, associated with its use. It is the
3.1.5 unit, n—a batch or finite subdivision of a lot of bulk
responsibility of the user of this standard to establish appro-
material (for example, a truck load or a specific area covered).
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
4. Significance and Use
1.3 The values stated in SI units are to be regarded as the
4.1 General:
standard. The values in parentheses are provided for informa-
4.1.1 Sampling is equally as important as the testing, and
tion purposes only.
the sampler shall take every precaution to obtain samples that
2. Referenced Documents will yield an acceptable estimate of the nature and conditions
of the materials which they represent.
2.1 ASTM Standards:
4.1.2 Samples for the development of preliminary data are
C 702 Practice for Reducing Field Samples of Aggregate to
2 obtained by the party responsible for the development of the
Testing Size
data. Samples for control of the product at the source of
D 2234 Test Method for Collection of a Gross Sample of
manufacture or storage, or at the site of use, are obtained by the
Coal
manufacturer, contractor, or other parties responsible for ac-
D 3665 Practice for Random Sampling of Construction
complishing the work. Samples for tests to be used in accep-
Materials
tance or rejection decisions by the purchaser are obtained by
E 105 Practice for Probability Sampling of Materials
the purchaser or his authorized representative.
E 122 Practice for Choice of Sample Size to Estimate a
Measure of Quality for a Lot or Process
5. Procedure
E 141 Practice for Acceptance of Evidence Based on the
5 5.1 Inspection—The material shall be inspected to deter-
Results of Probability Sampling
mine discernible variations. The seller shall provide equipment
3. Terminology needed for safe and appropriate inspection and sampling.
5.2 Sampling—The procedures for selecting locations or
3.1 Definitions of Terms Specific to This Standard:
times for sampling are described in Practice D 3665.
3.1.1 field sample, n—a quantity of the material to be tested
5.2.1 Sampling from a Conveyor Belt—Stop the conveyor
of sufficient size to provide an acceptable estimate of the
belt. Randomly select at least three areas of approximately
average quality of a unit.
equal size on the belt for sampling. In each of the locations to
3.1.2 increment, n—part of a sample.
be sampled, insert templates, the shape of which conform to the
3.1.3 lot, n—a sizable isolated quantity of bulk material
shape of the belt. From the selected areas obtain approximately
from a single source, assumed to have been produced by the
equal increments of material which will form a sample whose
quantity equals or exceeds the minimum recommended in
This practice is under the jurisdiction of ASTM Committee D-4 on Road and
4.3.2. Carefully scoop all material between templates into a
Paving Materials and are the direct responsibility of Subcommittee D04.30 on
suitable container.
Methods of Sampling.
Current edition approved Nov. 10, 1996. Published January 1997. Originally
5.2.2 Sampling from Truck Transports—By a random
published as D 979 – 48 T. Last previous edition D 979 – 89.
method, select the units to be sampled from the production of
Annual Book of ASTM Standards, Vol 04.02.
3 materials delivered. Obtain at least three approximately equal
Annual Book of ASTM Standards, Vol 05.05.
increments. Avoid sampling the extreme top surface. Select at
Annual Book of ASTM Standards, Vol 04.03.
Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
D 979
random from the unit being sampled and combine to form a of, and variation in, the properties to be measured. Designate
field sample whose quantity equals or exceeds the minimum each unit from which a field sample is to be obtained prior to
recommended in 5.3.2. The sample may be obtained by sampling. The number of field samples from the production
collecting the increments with a scoop or shovel. should be sufficient to give the desired confidence in test
results.
5.2.3 Sampling from the Roadway Prior to Compaction—
When only one sample is to be taken, obtain at least three
NOTE 1—Guidance for determining the number of samples required to
approximately equal increments, selected at random from the
obtain the desired level of confidence in test results may be found in
unit being sampled, and combine to form a field sample whose
Method D 2234, Practice E 105, Practice E 122, and Practice E 141.
quantity equals or exceeds the minimum recommended in NOTE 2—The unit to be represented by a single field sample should not
be so large as to mask the effects of significant variability within the unit.
5.3.2.
Nor should a unit be so small as to be affected by the inherent variability
5.2.3.1 When three or more samples are to be taken in order
between small portions of any bulk material.
to evaluate a lot of material, utilize a random method to
NOTE 3—A unit of bulk material composed of graded aggregate or
determine the locations to be sampled. Select a sample,
aggregate mixtures might consist of a full truckload. If it were possible,
consisting of approximately three equal increments, from each
the entire load might be tested as a practical matter. A field sample is
composed of three or more increments chosen at random from the material
location,
...
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