ASTM C995-01

Standard Test Method for Time of Flow of Fiber-Reinforced Concrete Through Inverted Slump Cone (Withdrawn 2008)

SIGNIFICANCE AND USE
This test method provides a measure of the consistency and workability of fiber-reinforced concrete.
The inverted slump-cone time is a better indicator than slump of the appropriate level of workability for fiber-reinforced concrete placed by vibration because such concrete can exhibit very low slump due to the presence of the fibers and still be easily consolidated. Mixtures with a time of flow less than 8 s, or with a slump greater than 2 in. (50 mm) shall be evaluated in terms of slump because the time of flow is too short to determine with satisfactory precision, or may not be determinable because the fiber-reinforced concrete flows freely through the inverted cone.
The results may be used for mixture proportioning, quality control both in the laboratory and in the field, and in development and research.
The results obtained using this test method may be influenced by vibrator diameter, amplitude, and frequency.
This test method may not be applicable to some concretes reinforced with fibers flexible and long enough to wrap around the vibrating element and dampen vibration.
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.
WITHDRAWN RATIONALE
This test method covers the determination of the inverted slump-cone time of fiber-reinforced concrete, both in the laboratory and in the field.
Formerly under the jurisdiction of Committee C09 on Concrete and Concrete Aggregates, this test method was withdrawn without replacement in December 2008 because subcommittee C09.42 members reported that it was not being used and its continued maintenance was not warranted.

General Information

• Status: Withdrawn
• Publication Date: 09-Nov-2001
• Withdrawal Date: 14-Dec-2008
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.42 - Fiber-Reinforced Concrete

Relations

• Replaces: ASTM C995-94 - Standard Test Method for Time of Flow of Fiber-Reinforced Concrete Through Inverted Slump Cone
• 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 withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C995–01
Standard Test Method for
Time of Flow of Fiber-Reinforced Concrete Through Inverted
1
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 4. Significance and Use
1.1 This test method covers the determination of the in- 4.1 This test method provides a measure of the consistency
verted slump-cone time of fiber-reinforced concrete, both in and workability of fiber-reinforced concrete.
the laboratory and in the field. 4.2 The inverted slump-cone time is a better indicator than
1.2 This test method is considered applicable to freshly slump of the appropriate level of workability for fiber-
1
mixed concrete having coarse aggregate up to 1 ⁄2 in. (38 mm) reinforced concrete placed by vibration because such concrete
in size. It is not applicable to concrete that flows freely through canexhibitverylowslumpduetothepresenceofthefibersand
the cone. still be easily consolidated. Mixtures with a time of flow less
1.3 The values stated in inch-pound units are to be regarded than 8 s, or with a slump greater than 2 in. (50 mm) shall be
as the standard. SI units are for information only. evaluated in terms of slump because the time of flow is too
1.4 This standard does not purport to address all of the short to determine with satisfactory precision, or may not be
safety concerns, if any, associated with its use. It is the determinable because the fiber-reinforced concrete flows freely
responsibility of the user of this standard to establish appro- through the inverted cone.
priate safety and health practices and determine the applica- 4.3 The results may be used for mixture proportioning,
bility of regulatory limitations prior to use. quality control both in the laboratory and in the field, and in
development and research.
2. Referenced Documents
4.4 The results obtained using this test method may be
2.1 ASTM Standards: influenced by vibrator diameter, amplitude, and frequency.
C 29/C 29M Test Method for Unit Weight and Voids in 4.5 This test method may not be applicable to some con-
2
Aggregate
cretes reinforced with fibers flexible and long enough to wrap
C 31/C 31M Practice for Making and Curing Concrete Test around the vibrating element and dampen vibration.
2
Specimens in the Field
5. Apparatus
C 143/C 143M Test Method for Slump of Hydraulic Ce-
2
ment Concrete 5.1 Cone, shall be the mold specified in Test Method C 143.
2
C 172 Practice for Sampling Freshly Mixed Concrete 5.2 Bucket—The container to receive the concrete shall be
3
C 192 Practice for Making and Curing Concrete Test Speci- the 1-ft (30-L) capacity bucket specified in Test Method
2
mens in the Laboratory C 29/ C 29M.
C 670 Practice for Preparing Precision and Bias Statements 5.3 Positioning Device—Adevice of the type shown in Fig.
2
for Test Methods for Construction Materials 1 shall be provided to center the cone in the bucket, prevent it
1
from tilting, and maintain the small end of the cone 4 6 ⁄4 in.
3. Summary of Test Method
(100 6 5 mm) from the bottom of the bucket.
3.1 This test method determines the time required for 5.4 Vibrator, shall be of the internal type specified in
fiber-reinforced concrete to flow through an inverted slump
Practices C 31/C 31M or C 192, except that the vibrating
1
cone under internal vibration. element shall be 1 6 ⁄8 in. (25 6 3 mm) in diameter.
5.5 Stopwatch—One that measures elapsed time to the
1 nearest second or less.
This test method is under the jurisdiction of ASTM Committee C09 on
Concrete and Concrete Aggregatesand is the direct responsibility of Subcommittee 5.6 Screeding Rod—The rod used for screeding shall be the
C09.42on Fiber-Reinforced Concrete.
tamping rod specified in Test Method C 143/C 143M.
Current edition approved Nov. 10, 2001. Published January 2002. Originally
published as C 995 – 83. Last previous edition C 995 – 94.
2
Annual Book of ASTM Standards, Vol 04.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C995
during the filling process.This effect is minimized by ensuring the volume
of the first layer of concrete placed is large enough to bridge the opening
in the cone.
7.2 Start the vibrator. Simultaneously start the stopwatch
andinsertthevibratingelementcentrallyandverticallyintothe
top of the sample in the cone. Let it descend at a rate such that
it touches the bottom of the bucket in 3 6 1 s. Maintain
...