ASTM D3-18

Method of Test for Toughness of Rock (Withdrawn 1964)

General Information

• Status: Withdrawn
• Technical Committee: D04 - Road and Paving Materials

Standards Content (Sample)

AMERICAN SOCIETY FOR TESTING MATERIALS
1916 RACE .ST., PHILADELPHIA 3, PA.
Reprinted from C< pyrighted Book of ASTM Standards~ P~rt •·
Standard Method of Test for
1
TOUGHNESS OF ROCK
ASTM Designation: D 3 - 18
AnOPTED 1908; REVISED, 1918.
1
Reapproved in 1968 Without Change.
This Standard of the American Society for Testing Materials is issued under
the fixed designation D 3; the final number indicates the year of original
adoption as stanrlard or, in the case of revision, the year of last revision.
NoTE.--This method was editorially revised and rear­
ranged in 1939.
Scope
so as to fall freely between suitable
guides.
1 This method of test covers the pro­
(c) A plunger made of hardened steel
cedure for determining the toughness of
and weighing 1 kg, arranged to slide
rock.
freely in a vertical direction in a sleeve,
Toughness the lower end of the plunger being
spherical in shape with a radius of 1 em.
2. Toughness, as applied to rock, is
(d) Means for raising the hammer
the resistance offered to fracture under
and for dropping it upon the plunger
impact, expressed as the final height of
from any specified height from 1 to not
blow required of a standard hammer to
75 em, and means for deter­
less than
cause fracture of a cylindrical test
mining the height of fall within approxi-
specimen of given dimensions.
mately 1 nim. ·
Apparatus (e) Means for holding the cylindrical
test specimen securely on the anvil with­
3. Any form of impact machine which
out rigid lateral support, and under the
will comply with the following essentials
plunger in such a way that the center of
may be used in making the test:
its upper surface shall, throughout the
(a) A cast-iron anvil weighing not
test, be tangent to the spherical end of
less than SO kg, firmly fixed upon a
the plunger at _its lowest po~t.
solid foundation.
(b) A hammer weighing 2 kg, arranged
Sampling
l Under the etandMdiution procedure of the
4. Quarry samples of rock from which
Society, this method is under the jurisdiction of
test specimens are to be prepared shall
)
the ABTM Committee D-.4 on Road and Paving
Materials. measure at least 6 in. on a side and at
564
13-15

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TEST FO:& ToUGHNESS OJ!' ROCK (p 3 - 18) 565
least 4 in. in thickness, and when possible the cylhders may be sawed by means
3
shall have the plane of structural weak­ of a bafd or diamond saw, or in any
ness of the rock plainly marked thereon. other W'i.Y which will not induce incipient
Samples
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