ASTM D1075-96(2005)
(Test Method)Standard Test Method for Effect of Water on Compressive Strength of Compacted Bituminous Mixtures
Standard Test Method for Effect of Water on Compressive Strength of Compacted Bituminous Mixtures
SCOPE
1.1 This test method covers measurement of the loss of compressive strength resulting from the action of water on compacted bituminous mixtures containing asphalt cement. A numerical index of reduced compressive strength is obtained by comparing the compressive strength of freshly molded and cured specimens with the compressive strength of duplicate specimens that have been immersed in water under prescribed conditions.
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.
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American Association State
Designation:D1075–96 (Reapproved 2005) Highway and Transportation Officials Standard
AASHTO No.: T165
Standard Test Method for
Effect of Water on Compressive Strength of Compacted
Bituminous Mixtures
This standard is issued under the fixed designation D 1075; 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 sufficient size to permit total immersion of the test specimens.
They shall be so designed and equipped as to permit accurate
1.1 This test method covers measurement of the loss of
and uniform control of the immersion temperature within
compressive strength resulting from the action of water on
61°C (1.8°F). They shall be constructed of or lined with
compacted bituminous mixtures containing asphalt cement. A
copper, stainless steel, or other nonreactive material.The water
numerical index of reduced compressive strength is obtained
used for the wet storage of the specimens shall be either
by comparing the compressive strength of freshly molded and
distilled or otherwise treated to eliminate electrolytes and the
cured specimens with the compressive strength of duplicate
bath shall be emptied, cleaned, and refilled with fresh water for
specimens that have been immersed in water under prescribed
each series of tests.
conditions.
4.2 A manually or automatically controlled water bath also
1.2 This standard does not purport to address all of the
shall be provided for bringing the immersed specimens to the
safety concerns, if any, associated with its use. It is the
temperature of 25 6 1°C (77 6 1.8°F) for the compression
responsibility of the user of this standard to establish appro-
test.Any convenient pan or tank may be used provided it is of
priate safety and health practices and determine the applica-
sufficient size to permit total immersion of the specimens.
bility of regulatory limitations prior to use.
4.3 A balance and a water bath with suitable accessory
2. Referenced Documents
equipment will be required for weighing the test specimens in
air and in water in order to determine their densities, the
2.1 ASTM Standards:
amount of absorption, and any changes in specimen volume
C 670 Practice for Preparing Precision and Bias Statements
resulting from the immersion test.
for Test Methods for Construction Materials
4.4 A supply of flat transfer plates of glass or other
D 1074 Test Method for Compressive Strength of Bitumi-
non-reactivematerialwillberequired.Oneoftheseplatesshall
nous Mixtures
be kept under each of the specimens during the immersion
D 2726 Test Method for Bulk Specific Gravity of Com-
period and during subsequent handling, except when weighing
pacted Bituminous Mixtures Using Saturated Surface-Dry
and testing, in order to prevent breakage or distortion of the
Specimens
specimens.
3. Significance and Use
5. Test Specimens
3.1 This test method is useful as an indicator of the
5.1 At least six 101.6 by 101.6-mm (4 by 4-in.) cylindrical
susceptibility to moisture of compacted bitumen-aggregate
specimens shall be made for each test. The procedures de-
mixtures.
scribed in Test Method D 1074 shall be followed in preparing
4. Apparatus
the loose mixtures and in molding and curing the test speci-
mens.
4.1 One or more automatically controlled water baths shall
beprovidedforimmersingthespecimens.Thebathsshallbeof
NOTE 1—This test method was developed to measure the loss of
compressive strength due to water for specimens designed at approxi-
mately 6 % air voids by the compaction procedures of Test Method
This test method is under the jurisdiction of ASTM Committee D04 on Road
D 1074. When used with mixtures designed by other test methods, it is
and Paving Materials and is the direct responsibility of Subcommittee D04.22 on
possible that the specimens will be compacted to some other void level
Effect of Water and Other Elements on Bituminous Coated Aggregates.
which may influence the results. Some agencies have established an air
Current edition approved Dec. 1, 2005. Published December 2005. Originally
void or percent density target to which the specimens should be com-
approved in 1949. Last previous edition approved in 2000 as D 1075 – 96 (2000).
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