ASTM C1621/C1621M-09a

Standard Test Method for Passing Ability of Self-Consolidating Concrete by J-Ring

SIGNIFICANCE AND USE
This test method provides a procedure to determine the passing ability of self-consolidating concrete mixtures. The difference between the slump flow and J-Ring flow is an indication of the passing ability of the concrete. A difference less than 25 mm [1 in.] indicates good passing ability and a difference greater than 50 mm [2 in.] indicates poor passing ability. The orientation of the mold for the J-Ring test and for the slump flow test without the J-Ring shall be the same.
This test method is applicable for laboratory use in comparing the passing ability of different concrete mixtures. It is also applicable in the field as a quality control test.
SCOPE
1.1 This test method covers determination of the passing ability of self-consolidating concrete by using the J-Ring in combination with a mold. The test method is limited to concrete with nominal maximum size of aggregate of up to 25 mm [1 in.].
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3 The text of this standard references notes that provide explanatory material. These notes (excluding those in tables and figures) shall not be considered as requirements of the standard.
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. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)

General Information

• Status: Historical
• Publication Date: 31-May-2009
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.47 - Self-Consolidating Concrete

Relations

• Replaces: ASTM C1621/C1621M-09 - Standard Test Method for Passing Ability of Self-Consolidating Concrete by J-Ring
• Effective Date: 01-Jun-2009
• Replaced By: ASTM C1621/C1621M-09b - Standard Test Method for Passing Ability of Self-Consolidating Concrete by J-Ring
• Effective Date: 01-Jul-2009

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:C1621/C1621M–09a
Standard Test Method for
1
Passing Ability of Self-Consolidating Concrete by J-Ring
This standard is issued under the fixed designation C 1621/C 1621M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* C 173/C 173M Test Method for Air Content of Freshly
Mixed Concrete by the Volumetric Method
1.1 This test method covers determination of the passing
C 1611/C 1611M Test Method for Slump Flow of Self-
ability of self-consolidating concrete by using the J-Ring in
Consolidating Concrete
combination with a mold. The test method is limited to
concrete with nominal maximum size of aggregate of up to 25
3. Terminology
mm [1 in.].
3.1 Definitions:
1.2 The values stated in either SI units or inch-pound units
3.1.1 For definitions of terms used in this test method, refer
are to be regarded separately as standard. The values stated in
to Terminology C 125.
each system may not be exact equivalents; therefore, each
3.2 Definitions of Terms Specific to This Standard:
system shall be used independently of the other. Combining
3.2.1 halo, n—an observed cement paste or mortar ring that
values from the two systems may result in non-conformance
has clearly separated from the coarse aggregate, around the
with the standard.
outside circumference of concrete after flowing from the mold.
1.3 The text of this standard references notes that provide
3.2.2 J-ring, n—an apparatus consisting of a rigid ring
explanatory material. These notes (excluding those in tables
5
supported on sixteen 16 mm [ ⁄8 in.] diameter rods equally
and figures) shall not be considered as requirements of the
spaced on a 300 mm [12 in.] diameter circle 100 mm [4 in.]
standard.
above a flat surface as shown in Fig. 1.
1.4 This standard does not purport to address all of the
3.2.3 J-ring flow, n—the distance of lateral flow of concrete
safety concerns, if any, associated with its use. It is the
using the J-Ring in combination with a mold.
responsibility of the user of this standard to establish appro-
3.2.4 passing ability, n—the ability of self-consolidating
priate safety and health practices and determine the applica-
concrete to flow under its own weight (without vibration) and
bility of regulatory limitations prior to use. (Warning—Fresh
fill completely all spaces within intricate formwork, containing
hydraulic cementitious mixtures are caustic and may cause
2 obstacles, such as reinforcement.
chemical burns to skin and tissue upon prolonged exposure.)
4. Summary of Test Method
2. Referenced Documents
3 4.1 Asample of freshly mixed concrete is placed in a mold,
2.1 ASTM Standards:
either in the upright or inverted position, that is concentric with
C 125 Terminology Relating to Concrete and Concrete
the J-Ring (Fig. 2). The concrete is placed in one lift without
Aggregates
tamping or vibration. The mold is raised, and the concrete is
C 143/C 143M Test Method for Slump of Hydraulic-
allowed to spread through the J-Ring (Fig. 3). After spreading
Cement Concrete
ceases, two diameters of the concrete mass are measured in
C 172 Practice for Sampling Freshly Mixed Concrete
approximately orthogonal directions. J-Ring flow is the aver-
age of the two diameters. The test is repeated without the
1
J-Ring to obtain the slump flow. The difference between the
This test method is under the jurisdiction of ASTM Committee C09 on
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
slump flow and J-Ring flow is an indicator of the passing
C09.47 on Self-Consolidating Concrete.
ability of the concrete.
CurrenteditionapprovedJune1,2009.PublishedJuly2009.Originallyapproved
in 2006. Last previous edition approved in 2009 as C 1621/C 1621M – 09.
5. Significance and Use
2
Section on Safety Precautions, Manual of Aggregate and Concrete Testing,
Annual Book of ASTM Standards, Vol. 04.02.
5.1 This test method provides a procedure to determine the
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
passing ability of self-consolidating concrete mixtures. The
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
difference between the slump flow and J-Ring flow is an
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. indication of the passing ability of the concrete. A difference
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C1621/C1621M–09a
FIG. 1 J-
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:C1621/C1621M–09 Designation:C1621/C1621M–09a
Standard Test Method for
1
Passing Ability of Self-Consolidating Concrete by J-Ring
This standard is issued under the fixed designation C 1621/C 1621M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This test method covers determination of the passing ability of self-consolidating concrete by using the J-Ring in
combination with a slump cone mold. The test method is limited to concrete with nominal maximum size of aggregate of up to
1 in [25 mm].25 mm [1 in.].
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard.Within the text, the SI units
are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used
independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3 The text of this standard references notes that provide explanatory material. These notes (excluding those in tables and
figures) shall not be considered as requirements of the standard.
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. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and
2
tissue upon prolonged exposure.)
2. Referenced Documents
3
2.1 ASTM Standards:
C 125 Terminology Relating to Concrete and Concrete Aggregates
C 143/C 143M Test Method for Slump of Hydraulic-Cement Concrete
C 172 Practice for Sampling Freshly Mixed Concrete
C 173/C 173M Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method
C 1611/C 1611M Test Method for Slump Flow of Self-Consolidating Concrete
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this test method, refer to Terminology C 125.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 halo, n—an observed cement paste or mortar ring that has clearly separated from the coarse aggregate, around the outside
circumference of concrete after flowing from the slump cone. mold.
5
3.2.2 J-ring, n—an apparatus consisting of a rigid ring supported on sixteen ⁄8 in. [16 mm] diameter rods equally spaced on
a 12 in. [300 mm] diameter circle 4 in. [100 mm] above a flat surface as shown in —an apparatus consisting of a rigid ring
5
supported on sixteen 16 mm [ ⁄8 in.] diameter rods equally spaced on a 300 mm [12 in.] diameter circle 100 mm [4 in.] above a
flat surface as shown in Fig. 1.
3.2.3 J-ring flow, n—the distance of lateral flow of concrete using the J-Ring in combination with a slump cone. mold.
3.2.4 passing ability, n—the ability of self-consolidating concrete to flow under its own weight (without vibration) and fill
completely all spaces within intricate formwork, containing obstacles, such as reinforcement.
4. Summary of Test Method
4.1 A sample of freshly mixed concrete is placed in a slump mold, either in the upright or inverted position, that is concentric
with the J-Ring (Fig. 2). The concrete is placed in one lift without tamping or vibration. The mold is raised, and the concrete is
allowed to spread through the J-Ring (Fig. 3). After spreading ceases, two diameters of the concrete mass are measured in
1
This test method is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.47 on
Self-Consolidating Concrete.
CurrenteditionapprovedMayJune1,2009.PublishedJuneJuly2009.Originallyapprovedin2006.Lastpreviouseditionapprovedin20082009asC 1621/C 1621M – 089.
2
Section on Safety Precautions, Manual of Aggregate and Concrete Testing, Annual Book of ASTM Standards, Vol. 04.02.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

--
...