ASTM D1188-96(2002)
(Test Method)Standard Test Method for Bulk Specific Gravity and Density of Compacted Bituminous Mixtures Using Paraffin-Coated Specimens
Standard Test Method for Bulk Specific Gravity and Density of Compacted Bituminous Mixtures Using Paraffin-Coated Specimens
SCOPE
1.1 This test method covers the determination of bulk specific gravity of specimens of Parafilm-coated, compacted bituminous mixtures as defined in Terminology E 12.
1.2 This method should be used with samples that contain open or interconnecting voids or absorb more than 2% of water by volume, or both, as determined by Section 8.
1.3 The bulk specific gravity of the compacted bituminous mixtures may be used in calculating the unit weight of the mixture.
1.4 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: D 1188 – 96 (Reapproved 2002)
Standard Test Method for
Bulk Specific Gravity and Density of Compacted Bituminous
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Mixtures Using Coated Samples
This standard is issued under the fixed designation D1188; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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 3. Significance and Use
1.1 This test method covers the determination of bulk 3.1 This test method is useful in calculating percent air
specific gravity of specimens of Parafilm-coated, compacted voids as given in Test Method D3203. Since specific gravity
bituminous mixtures as defined in Terminology E12. has no units, it must be converted to density when this type of
1.2 This method should be used with samples that contain measurement is required. This conversion is made by multi-
open or interconnecting voids or absorb more than 2% of plyingthespecificgravityatagiventemperaturebythedensity
water by volume, or both, as determined by Section 8. of water at the same temperature.
1.3 The bulk specific gravity of the compacted bituminous
4. Apparatus
mixtures may be used in calculating the unit weight of the
mixture. 4.1 Balance, with ample capacity, and with sufficient sensi-
tivity to enable bulk specific gravities to the specimens to be
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the calculated to at least four significant figures, that is, to at least
three decimal places. It shall be equipped with a suitable
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- apparatus to permit weighing the specimen while it is sus-
pended in water. The balance shall conform to Specification
bility of regulatory limitations prior to use.
D4753 as a class GP2 balance.
2. Referenced Documents
4.1.1 Since there are no more significant figures in the
2.1 ASTM Standards: quotient (bulk specific gravity) than appear in either the
2
D979 Practice for Sampling Bituminous Paving Mixtures dividend(themassofthespecimeninair)orinthedivisor(the
D1461 Test Method for Moisture or Volatile Distillates in volume of the specimen, obtained from the difference in mass
2
Bituminous Paving Mixtures ofthespecimeninairandinwater),thismeansthatthebalance
D2726 Test Method for Bulk Specific Gravity and Density must have a sensitivity capable of providing both mass and
2
of Non-Absorptive Compacted Bituminous Mixtures volume values to at least four figures. For example, a sensi-
D3203 Test Method for Percent Air Voids in Compacted tivity of 0.1 g would provide four significant figures for the
2
Dense and Open Bituminous Paving Mixtures determination of a mass in the range from 130.0 to 999.9 g
D4753 Specification for Evaluating, Selecting and Speci- when the specific gravity is 2.300.
fying Balances and Scales for Use in Testing Soil, Rock, 4.2 Water Bath, for immersing the specimen in water while
3
and Related Construction Materials suspended, equipped with either an overflow outlet for main-
E12 Terminology Relating to Density and Specific Gravity taining a constant water level or an electronic tare feature on
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of Solids, Liquids, and Gases the scale.
5. Materials
5.1 Parafilm—Is an elastomeric film obtainable from most
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This test method is under the jurisdiction of ASTM Committee D04 on Road
scientific suppliers.
and Paving Materials and is the direct responsibility of Subcommittee D04.21 on
5.2 Polyurethane Foam—A foam mat of a minimum of
Specific Gravity and Density of Bituminous Mixtures.
Current edition approved Aug. 10, 1996. Published October 1996. Originally
50 350cm(20 320in.)shallbeusedfortheworkingsurface
published as D1188–51. Last previous edition D1188–89.
by about 12.5 mm (0.5 in.) thick.Additionally, a minimum of
2
Annual Book of ASTM Standards, Vol 04.03.
3
one foam pad with a size approximately equal to the top
Annual Book of ASTM Standards, Vol 04.08.
4
Annual Book of ASTM Standards, Vol 15.05. surface dimensions of the sample shall be on hand.
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D 1188 – 96 (2002)
5.3 Calibration Cylinder—An approximately 100-mm (4- stretched to an approximately 150 3150-mm (6 36-in.)
in.) diameter by 60-mm (2.5-in.) smooth-sided aluminum square. Take care not to create holes in the film.
cylinder. 8.2.4 Place the stretched film over one end of the specimen
and press the sides of the film around the sam
...
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