ASTM C97-96e1

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Designation: C 97 – 96
Standard Test Methods for
Absorption and Bulk Specific Gravity of Dimension Stone
ThisstandardisissuedunderthefixeddesignationC 97;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
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.
e NOTE—Two editorial changes were made in 6.1 in July 2000.
1. Scope his authorized representative from the quarried stone or taken
from the natural ledge and shall be of adequate size to permit
1.1 These test methods cover the tests for determining the
the preparation of at least three test specimens. When percep-
absorption and bulk specific gravity of all types of dimension
tible variations occur, the purchaser may select as many
stone, except slate.
samples as are necessary for determining the range in proper-
1.2 The values stated in SI units are to be regarded as the
ties.
standard. The values given in parentheses are for information
only.
6. Test Specimens
1.3 This standard does not purport to address the safety
6.1 The specimens may be cubes, prisms, cylinders, or any
concerns, if any, associated with its use. It is the responsibility
regular form with least dimension not under 50.8 mm (2 in.)
of the user of this standard to establish appropriate safety and
and greatest dimension not over 76.2 mm (3 in.) but the ratio
health practices and determine the applicability of regulatory
of volume to surface area shall not be less than 8.5 nor greater
limitations prior to use.
than 12.7 when measuring in millimetres (0.3 and 0.5 when
2. Referenced Documents measuring in inches).All surfaces shall be reasonably smooth.
Saw or core drill surfaces are considered satisfactory, but
2.1 ASTM Standards:
rougher surfaces shall be finished with No. 80 abrasive. No
C 119 Terminology Relating to Dimension Stone
chisels or similar tools shall be used at any stage of preparing
3. Terminology
the specimens.At least three specimens shall be prepared from
each sample.
3.1 Definitions—All definitions are in accordance with Ter-
minology C 119.
7. Procedure
4. Significance and Use
7.1 Dry the specimens for 48 h in a ventilated oven at a
temperature of 60 6 2°C (140 6 4°F). At the 46th, 47th, and
4.1 These test methods are useful in indicating the differ-
48th hour, weigh the specimens to ensure that the weight is the
ences in absorption between the various dimension stones.
same. If the weight continues to drop, continue to dry the
These test methods also provide one element in comparing
specimens until there are three successive hourly readings with
stones of the same type.
the same weight.
ABSORPTION
7.2 After drying, cool the specimens in the room for 30 min
and weigh. When the specimens cannot be weighed immedi-
5. Sampling
ately after cooling, store them in a desiccator. Determine the
5.1 The sample shall be selected to represent a true average
weights to the nearest 0.02 g.
of the type or grade of stone under consideration and shall be
7.3 Immerse the specimens completely in filtered or dis-
of the quality supplied to the market under the type designation
tilled water at 22 6 2°C (72 6 4°F) for 48 h.At the end of this
to be tested. The sample may be selected by the purchaser or
period remove them from the water bath one at a time, surface
dry with a damp cloth, and weigh to the nearest 0.02 g.
These test methods are under the jurisdiction of ASTM Committee C-18 on
8. Calculation and Report
Dimension Stone and are the direct responsibility of Subcommittee C18.01 on Test
8.1 Calculate the weight percentage absorption (Note 1) for
Methods.
Current edition approved Feb. 10, 1996. Published April 1996. Originally each specimen as follows:
published as C 97 – 30. Last previous edition C 97 – 90 (1994).
2 Absorption, weight % 5 [~B 2 A!/A] 3 100 (1)
Annual Book of ASTM Standards, Vol 04.07.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C97–96
where:
A = weight of the dried specimen, and
B = weight of the specimen after immersion.
NOTE 1—If the percentage of absorption by volume is desired it will be
necessary to determine the bulk specific gravity and multiply each value
of percentage absorption by weight by the corresponding bulk specific
gravity value.
8.2 Report the average of all t
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