ASTM C170-90(1999)
(Test Method)Standard Test Method for Compressive Strength of Dimension Stone
Standard Test Method for Compressive Strength of Dimension Stone
SCOPE
1.1 This test method covers the sampling, preparation of specimens, and determination of the compressive strength of dimension stone.
1.2 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems 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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C170–90(Reapproved 1999)
Standard Test Method for
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 6. Sampling
1.1 This test method covers the sampling, preparation of 6.1 The sample shall be selected to represent a true average
specimens, and determination of the compressive strength of of the type or grade of stone under consideration and shall be
dimension stone. of the quality supplied to the market in finished form under the
1.2 This standard does not purport to address all of the type designation to be tested. The sample may be selected by
safety concerns, if any, associated with its use. It is the the purchaser or his authorized representative from quarried
responsibility of the user of this standard to establish appro- stone or taken from the natural ledge and shall be of adequate
priate safety and health practices and determine the applica- size to permit the preparation of the desired number of test
bility of regulatory limitations prior to use. specimens. When perceptible variations occur, the purchaser
may select as many samples as are necessary for determining
2. Referenced Documents
the variation in compressive strength.
2.1 ASTM Standards:
7. Test Specimens
C 119 Terminology Relating to Dimension Stone
E 4 Practices for Force Verification of Testing Machines 7.1 The test specimens may be cubes, square prisms, or
cylinders and shall be cut from the sample with saws or core
3. Terminology
drills. The diameter or lateral dimension (distance between
3.1 Definitions—All definitions are in accordance with Ter- opposite vertical faces) shall be not less than 2 in. (50.8 mm)
minology C 119.
(Explanatory Note 1), and the ratio of height (Explanatory
Note2)todiameterorlateraldimensionshouldbenotlessthan
4. Significance and Use
1:1. At least five specimens shall be prepared for each
4.1 Thistestmethodisusefulinindicatingthedifferencesin
condition of the test; that is, when the compressive strength is
compressive strength between the various dimension stones.
desiredforthewetanddryconditionsbutinonlyonedirection,
This test method also provides one element in comparing
such as perpendicular to the bed (or rift) (see Fig. 1( a)), ten
stones of the same type.
specimens will be required. For wet and dry strength tests both
perpendicular and parallel to the bed (or rift) (see Fig. 1(a) and
5. Apparatus
(b)), twenty specimens are required (Explanatory Note 3). The
5.1 Any testing machine conforming to Practices E 4 and to
load-bearing faces shall be finished by grinding to as nearly
thespeedoftestingrequirementsprescribedinSection9ofthis
true and parallel planes (Explanatory Note 4) as practicable.
test method may be used.
7.2 The load-bearing surfaces and the direction of bedding
5.2 In vertical testing machines, the spherical bearing block
(or rift) shall be marked on each specimen after finishing.
shall be suspended from the upper head of the machine in such
7.3 The load-bearing areas of the specimen shall be calcu-
a manner that the contact plate remains in a central position
lated from measurements taken midway between the load-
(spherical surfaces in full contact) when not loaded. The
bearing surfaces. The dimensions of the specimens shall be
spherical surfaces shall be well lubricated, and the center of
measured to the nearest 0.02 in. (0.5 mm) and the load-bearing
2 2
curvature shall lie in the surface of contact with the specimen.
areas calculated to the nearest 0.04 in. (0.26 cm ).
8. Conditioning
This test method is under the jurisdiction of ASTM Committee C-18 on
8.1 Before testing the specimens in a dry condition, dry
Dimension Stone and is the direct responsibility of Subcommittee C18.01 on Test
Methods. them for 48 h at 60 6 2°C (140 6 4°F).At the 46th, 47th, and
Current edition approved Sept. 28, 1990. Published November 1990. Originally
48th h, weigh the specimens to ensure that the weight is the
e1
published as C 170 – 41 T. Last previous edition C 170 – 87 .
same. If the weight continues to drop, continue to dry the
Annual Book of ASTM Standards, Vol 04.07.
specimens until there are 3 successive hourly readings with the
Annual Book of ASTM Standards, Vol 03.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C170
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 Rift
same weight. After removing the specimens from the oven, rift) as shown in Fig. 1(a) in a dry condition as the compressive
cool them to room temperature in a desiccator before testing strength perpendicular to the rift in a dry condition. Similarly
them. report the values perpendicular/wet, parallel/dry as shown in
8.2 Before testing the specimens in a wet condition, im- Fig. 1(b) and parallel/wet.All determinations shall be reported
merse them in water for 48 h at 22 6 2°C (72 6 4°F). Test as information.
them immediately upon removal from the bath, wiping the 11.2 The following additional information shall be reported:
11.2.1 Identification of the sample, including name and
specimens free of surface water.
location of the quarry, name or position of the ledge, date when
9. Procedure
sample was t
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.