ASTM C1712-09
(Test Method)Standard Test Method for Rapid Assessment of Static Segregation Resistance of Self-Consolidating Concrete Using Penetration Test
Standard Test Method for Rapid Assessment of Static Segregation Resistance of Self-Consolidating Concrete Using Penetration Test
SIGNIFICANCE AND USE
This test method is for the rapid assessment of the static segregation resistance of self-consolidating concrete.
The method is useful for rapid assessment of the static segregation resistance of self-consolidating concrete during mixture development in the laboratory as well as prior to placement of the mixture in the field. Test Method C1610/C1610M for static segregation of SCC is not sufficiently rapid, and the non-mandatory Visual Stability Index as determined through the procedure described in Appendix X1 of Test Method C1611/C1611M is highly subjective and qualitative.
Appendix X1 provides non-mandatory criteria that may be used to indicate the degree of static segregation resistance of self-consolidating concrete mixtures.
SCOPE
1.1 This test method covers the rapid assessment of static segregation resistance of normal-weight self-consolidating concrete (SCC). The test does not measure static segregation resistance directly, but provides an assessment of whether static segregation is likely to occur.
1.2 The test apparatus and protocol were developed based on tests with SCC mixtures containing saturated surface dry (SSD) coarse aggregates ranging in relative density from 2.67 to 2.79 and in nominal maximum size from 9.5 mm to 25 mm. For SCC mixtures outside these ranges, testing is recommended to establish a correlation between penetration depth and static segregation measured in accordance with Test Method C1610/C1610M. This test method shall not be used to assess the static segregation resistance of self-consolidating concrete containing lightweight aggregates or heavyweight aggregates without prior testing to establish a correlation.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes shall not be considered as requirements of the standard.
1.5 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. )
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Designation: C1712 − 09
StandardTest Method for
Rapid Assessment of Static Segregation Resistance of Self-
Consolidating Concrete Using Penetration Test
This standard is issued under the fixed designation C1712; 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 2. Referenced Documents
1.1 This test method covers the rapid assessment of static 2.1 ASTM Standards:
segregation resistance of normal-weight self-consolidating C125 Terminology Relating to Concrete and Concrete Ag-
concrete (SCC). The test does not measure static segregation gregates
resistance directly, but provides an assessment of whether C143/C143M Test Method for Slump of Hydraulic-Cement
static segregation is likely to occur. Concrete
C172 Practice for Sampling Freshly Mixed Concrete
1.2 The test apparatus and protocol were developed based
C173/C173M Test Method forAir Content of Freshly Mixed
on tests with SCC mixtures containing saturated surface dry
Concrete by the Volumetric Method
(SSD) coarse aggregates ranging in relative density from 2.67
C192/C192M Practice for Making and Curing Concrete Test
to 2.79 and in nominal maximum size from 9.5 mm to 25 mm.
Specimens in the Laboratory
For SCC mixtures outside these ranges, testing is recom-
C1610/C1610M Test Method for Static Segregation of Self-
mended to establish a correlation between penetration depth
Consolidating Concrete Using Column Technique
and static segregation measured in accordance with Test
C1611/C1611M Test Method for Slump Flow of Self-
Method C1610/C1610M. This test method shall not be used to
Consolidating Concrete
assess the static segregation resistance of self-consolidating
concrete containing lightweight aggregates or heavyweight
3. Terminology
aggregates without prior testing to establish a correlation.
3.1 Definitions:
1.3 The values stated in SI units are to be regarded as
3.1.1 For definitions of terms used in this test method, refer
standard. No other units of measurement are included in this
to Terminology C125.
standard.
3.2 Definitions of Terms Specific to This Standard:
1.4 The text of this standard references notes and footnotes
3.2.1 static segregation resistance, n—resistance of a con-
that provide explanatory material. These notes and footnotes
crete mixture to segregation of the mortar component from the
shall not be considered as requirements of the standard.
coarse aggregate while the concrete is at rest and before initial
setting.
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary of Test Method
responsibility of the user of this standard to establish appro-
4.1 This test method uses a penetration apparatus (shown in
priate safety and health practices and determine the applica-
Figs. 1 and 2) and an inverted slump mold (Fig. 3). A sample
bility of regulatory limitations prior to use. (Warning—Fresh
of freshly mixed self-consolidating concrete is placed in an
hydraulic cementitious mixtures are caustic and may cause
inverted slump mold without tamping or vibration. The hollow
chemical burns to skin and tissue upon prolonged exposure. )
cylinder attached to a metal rod is aligned in the center of the
inverted slump mold as shown in Fig. 3. The hollow cylinder
This test method is under the jurisdiction of ASTM Committee C09 on
is then lowered onto the surface of the concrete and released to
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
C09.47 on Self-Consolidating Concrete.
Current edition approved Oct. 1, 2009. Published November 2009. DOI: For referenced ASTM standards, visit the ASTM website, www.astm.org, or
10.1520/C1712-09. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Section on Safety Precautions, Manual of Aggregate and Concrete Testing, Standards volume information, refer to the standard’s Document Summary page on
Annual Book of ASTM Standards, Vol. 04.02. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C1712 − 09
FIG. 1 Dimension of Penetration Apparatus
FIG. 2 Penetration Apparatus
freely penetrate into the fresh concrete. The penetration depth 5. Significance and Use
(Pd) is determined and used to assess the static segregation
5.1 This test method is for the rapid assessment of the static
resistance of the self-consolidating concrete mixture (1-5).
segregation resistance of self-consolidating concrete.
5.2 The method is useful for rapid assessment of the static
segregation resistance of self-consolidating concrete during
The boldface numbers in parentheses refer to a list of references at the end of
this standard. mixture development in the laboratory as well as prior to
C1712 − 09
FIG. 3 Penetration Test
NOTE 1—The number and size of the holes may be chosen to be greater
placement of the mixture in the field. Test Method C1610/
than the minimum stated in 6.2 to achieve the required mass (45 61g)
C1610M for static segregation of SCC is not sufficiently rapid,
of the penetration head. The hollow cylinder shown in Fig. 2 is made of
and the non-mandatory Visual Stability Index as determined
Polyvinyl Chloride (PVC) and has six holes on the top surface; each hole
through the procedure described in Appendix X1 of Test
has a diameter of approximately 10 mm.
Method C1611/C1611M is highly subjective and qualitative. NOTE 2—This enables the top of the metal rod to be used as the mark
for taking both the initial and final readings since it will always lie within
5.3 Appendix X1 provides non-mandatory criteria that may
the range of the reading scale when the surface of the concrete in the mold
beusedtoindicatethedegreeofstaticsegregationresistanceof
is properly leveled (see Section 8.5).
self-consolidating concrete mixtures.
6.3 Base Plate (Optional)—As described in Test Method
C1611/C1611M.
6. Apparatus
6.4 Strike-off Bar—As described in Test Method C173/
6.1 Mold—The slump mold is used in this test method and
C173M.
shall conform to Test Method C143/C143M.
6.5 Sample Receptacle—The receptacle shall be a heavy-
6.2 Penetration Apparatus—The penetration apparatus,
gauge metal pan or wheelbarrow of sufficient capacity to allow
shown in Fig. 1, consists of a support frame, a metal sleeve, a
easy remixing of the entire sample with a shovel, trowel, or
set screw, a penetration head and a reading scale. The penetra-
scoop.
tion head, consisting of a non-corrosive hollow cylinder and a
metal rod, has a mass of 45 6 1 g. The rod is bolted vertically 6.6 Small Tools—Tools and items such as shovels, plastic
into the center of the top of the hollow cylinder and acts as a
pails, trowels, scoops, and rubber gloves shall be provided.
unit with the cylinder. The inner diameter, wall thickness, and
height of the hollow cylinder are 75 6 1 mm, 1.5 6 0.1 mm, 7. Sample
and 50 6 1 mm, respectively. Holes are symmetrically drilled
7.1 Obtain a sample of freshly mixed self-consolidating
on the top surface of the hollow cylinder to allow air to escape
concrete in accordance with Practice C172 or Practice C192/
during the penetration test.At least two holes with a minimum
C192M, and place it in the sample receptacle.
diameter of 6 mm must be provided (see Note 1). The reading
scale shall be 55 mm long and marked in 1 mm increments.
8. Procedure
The scale is mounted on the support frame and adjacent to the
8.1 Perform the rapid static segregation resistance test on a
metal rod, as shown in Figs. 1 and 2. With both the support
flat
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