ASTM C995-94

Standard Test Method for Time of Flow of Fiber-Reinforced Concrete Through Inverted Slump Cone

SCOPE
1.1 This test method covers the determination of the inverted slump-cone time of fiber-reinforced concrete, both in the laboratory and in the field.  
1.2 This test method is considered applicable to freshly mixed concrete having coarse aggregate up to 1 1/2 in. (38 mm) in size. It is not applicable to concrete that flows freely through the cone.  
1.3 The values stated in inch-pound units are to be regarded as the standard. SI units are for information only.  
1.4 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.

General Information

• Status: Historical
• Publication Date: 09-Nov-2001
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.42 - Fiber-Reinforced Concrete

Relations

• Replaced By: ASTM C995-01 - Standard Test Method for Time of Flow of Fiber-Reinforced Concrete Through Inverted Slump Cone (Withdrawn 2008)
• Effective Date: 10-Nov-2001
• Referred By: ASTM C1140/C1140M-11(2019) - Standard Practice for Preparing and Testing Specimens from Shotcrete Test Panels
• Effective Date: 10-Nov-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 995 – 94
Standard Test Method for
Time of Flow of Fiber-Reinforced Concrete Through Inverted
Slump Cone
This standard is issued under the fixed designation C 995; 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 and workability of fiber-reinforced concrete.
4.2 The inverted slump-cone time is a better indicator than
1.1 This test method covers the determination of the in-
slump of the appropriate level of workability for fiber-
verted slump-cone time of fiber-reinforced concrete, both in
reinforced concrete placed by vibration because such concrete
the laboratory and in the field.
can exhibit very low slump due to the presence of the fibers and
1.2 This test method is considered applicable to freshly
1 still be easily consolidated.
mixed concrete having coarse aggregate up to 1 ⁄2 in. (38 mm)
4.3 The results may be used for mixture proportioning,
in size. It is not applicable to concrete that flows freely through
quality control both in the laboratory and in the field, and in
the cone.
development and research.
1.3 The values stated in inch-pound units are to be regarded
4.4 The results obtained using this test method may be
as the standard. SI units are for information only.
influenced by vibrator diameter, amplitude, and frequency.
1.4 This standard does not purport to address all of the
4.5 This test method may not be applicable to some con-
safety concerns, if any, associated with its use. It is the
cretes reinforced with fibers flexible and long enough to wrap
responsibility of the user of this standard to establish appro-
around the vibrating element and dampen vibration.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Apparatus
2. Referenced Documents 5.1 Cone, shall be the mold specified in Test Method C 143.
5.2 Bucket—The container to receive the concrete shall be
2.1 ASTM Standards:
the 1-ft (30-L) capacity bucket specified in Test Method
C 29/C29M Test Method for Unit Weight and Voids in
C 29/ C 29M.
Aggregate
5.3 Positioning Device—A device of the type shown in Fig.
C 31 Practice for Making and Curing Concrete Test Speci-
1 shall be provided to center the cone in the bucket, prevent it
mens in the Field
from tilting, and maintain the small end of the cone 46 ⁄4 in.
C 143 Test Method for Slump of Hydraulic Cement Con-
(100 6 5 mm) from the bottom of the bucket.
crete
5.4 Vibrator, shall be of the internal type specified in
C 172 Practice for Sampling Freshly Mixed Concrete
Practices C 31 or C 192, except that the vibrating element shall
C 192 Practice for Making and Curing Concrete Test Speci-
be 16 ⁄8 in. (25 6 3 mm) in diameter.
mens in the Laboratory
5.5 Stopwatch—One that measures elapsed time to the
C 670 Practice for Preparing Precision and Bias Statements
nearest second or less.
for Test Methods for Construction Materials
5.6 Screeding Rod—The rod used for screeding shall be the
3. Summary of Test Method
tamping rod specified in Test Method C 143.
3.1 This test method determines the time required for
6. Sampling
fiber-reinforced concrete to flow through an inverted slump
6.1 The sample of concrete for the test shall be representa-
cone under internal vibration.
tive of the entire batch. It shall be obtained in accordance with
4. Significance and Use
Practice C 172, except that wet-sieving shall not be permitted.
4.1 This test method provides a measure of the consistency
7. Procedure
7.1 Dampen the bucket and place it on a level, rigid,
This test method is under the jurisdiction of ASTM Committee C-9 on Concrete
horizontal surface free of vibration and other disturbances.
and Concrete Aggregatesand is the direct responsibility of Subcommittee C09.42on
Fiber-Reinforced Concrete. Dampen the cone and
...