ASTM C170-06

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:C170–06
Standard Test Method for
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Compressive Strength of Dimension Stone
This standard is issued under the fixed designation C 170; 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 a manner that the contact plate remains in a central position
(spherical surfaces in full contact) when not loaded. The
1.1 This test method covers the sampling, preparation of
spherical surfaces shall be well lubricated, and the center of
specimens, and determination of the compressive strength of
curvature shall lie in the surface of contact with the specimen.
dimension stone.
1.2 This standard does not purport to address all of the
6. Sampling
safety concerns, if any, associated with its use. It is the
6.1 The sample shall be selected to represent a true average
responsibility of the user of this standard to establish appro-
of the type or grade of stone under consideration and shall be
priate safety and health practices and determine the applica-
of the quality supplied to the market in finished form under the
bility of regulatory limitations prior to use.
type designation to be tested. The sample may be selected by
2. Referenced Documents the purchaser or his authorized representative from quarried
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stone or taken from the natural ledge and shall be of adequate
2.1 ASTM Standards:
size to permit the preparation of the desired number of test
C119 Terminology Relating to Dimension Stone
specimens. When perceptible variations occur, the purchaser
E4 Practices for Force Verification of Testing Machines
may select as many samples as are necessary for determining
3. Terminology
the variation in compressive strength.
3.1 Definitions—All definitions are in accordance with Ter-
7. Test Specimens
minologyC119.
7.1 The test specimens may be cubes or cylinders and shall
4. Significance and Use be cut from the sample with saws or core drills. The diameter
or lateral dimension (distance between opposite vertical faces)
4.1 Thistestmethodisusefulinindicatingthedifferencesin
shallbenotlessthan2in.(50.8mm)(ExplanatoryNote1),and
compressive strength between the various dimension stones.
the ratio of height (Explanatory Note 2) to diameter or lateral
This test method also provides one element in comparing
dimension shall be 1:1. At least five specimens shall be
stones of the same type.
prepared for each condition of the test; that is, when the
5. Apparatus
compressive strength is desired for the wet and dry conditions
but in only one direction, such as perpendicular to the bed (or
5.1 Any testing machine conforming to PracticesE4 and to
rift)(seeFig.1(a)),tenspecimenswillberequired.Forwetand
thespeedoftestingrequirementsprescribedinSection9ofthis
dry strength tests both perpendicular and parallel to the bed (or
test method may be used.
rift) (see Fig. 1(a) and (b)), twenty specimens are required
5.2 In vertical testing machines, the spherical bearing block
(Explanatory Note 3). The load-bearing faces shall be finished
shall be suspended from the upper head of the machine in such
by grinding to as nearly true and parallel planes (Explanatory
Note 4) as practicable.
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This test method is under the jurisdiction of ASTM Committee C18 on
7.2 The load-bearing surfaces and the direction of bedding
Dimension Stone and is the direct responsibility of Subcommittee C18.01 on Test
(or rift) shall be marked on each specimen after finishing.
Methods.
7.3 The load-bearing areas of the specimen shall be calcu-
Current edition approved Oct. 15, 2006. Published November 2006. Originally
approved in 1941. Last previous edition approved in 1999 as C 170 – 90(1999).
lated from measurements taken midway between the load-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
bearing surfaces. The dimensions of the specimens shall be
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
measured to the nearest 0.02 in. (0.5 mm) and the load-bearing
Standards volume information, refer to the standard’s Document Summary page on
2 2
the ASTM website. areas calculated to the nearest 0.04 in. (0.26 cm ).
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C170–06
NOTE 1—Dashed lines indicate direction of bedding or rift. Arrows indicate direction of loading.
(a) Loading Perpendicular to Bedding or Rift (b) Loading Parallel to Bedding or Rift
FIG. 1 Methods of Applying Load with Reference to Bedding or Rif
...