ASTM C403/C403M-06
(Test Method)Standard Test Method for Time of Setting of Concrete Mixtures by Penetration Resistance
Standard Test Method for Time of Setting of Concrete Mixtures by Penetration Resistance
SIGNIFICANCE AND USE
Since the setting of concrete is a gradual process, any definition of time of setting must necessarily be arbitrary. In this test method, the times required for the mortar to reach specified values of resistance to penetration are used to define times of setting.
This test method can be used to determine the effects of variables, such as water content; brand, type and amount of cementitious material; or admixtures, upon the time of setting of concrete. This test method may also be used to determine compliance with specified time-of-setting requirements.
This test method may also be applied to prepared mortars and grouts. However, when the setting time of concrete is desired, the test shall be performed on mortar sieved from the concrete mixture and not on a prepared mortar intended to simulate the mortar fraction of the concrete; it has been shown that the initial and final setting times may be increased when using the prepared mortar.
SCOPE
1.1 This test method covers the determination of the time of setting of concrete, with slump greater than zero, by means of penetration resistance measurements on mortar sieved from the concrete mixture.
1.2 This test method is suitable for use only when tests of the mortar fraction will provide the information required.
1.3 This test method may also be applied to prepared mortars and grouts.
1.4 This test method is applicable under controlled laboratory conditions, as well as under field conditions.
1.5 The values stated in either inch-pound units or SI units shall be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without combining values in any way.
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.
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Standards Content (Sample)
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Designation:C403/C403M–06
Standard Test Method for
Time of Setting of Concrete Mixtures by Penetration
1
Resistance
ThisstandardisissuedunderthefixeddesignationC403/C403M;thenumberimmediatelyfollowingthedesignationindicatestheyear
of original adoption or, in the case of revision, the year of last revision.Anumber 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* C192/C192M Practice for Making and Curing Concrete
Test Specimens in the Laboratory
1.1 Thistestmethodcoversthedeterminationofthetimeof
C231 Test Method for Air Content of Freshly Mixed
setting of concrete, with slump greater than zero, by means of
Concrete by the Pressure Method
penetrationresistancemeasurementsonmortarsievedfromthe
C670 Practice for Preparing Precision and Bias Statements
concrete mixture.
for Test Methods for Construction Materials
1.2 This test method is suitable for use only when tests of
D1558 Test Method for Moisture Content Penetration Re-
the mortar fraction will provide the information required.
sistance Relationships of Fine-Grained Soils
1.3 This test method may also be applied to prepared
E1 Specification forASTM Liquid-in-GlassThermometers
mortars and grouts.
E11 Specification for Wire Cloth and Sieves for Testing
1.4 This test method is applicable under controlled labora-
Purposes
tory conditions, as well as under field conditions.
1.5 The values stated in either inch-pound units or SI units
3. Terminology
shall be regarded separately as standard. The values stated in
3.1 Definitions—Definitions are given in Terminology
each system may not be exact equivalents; therefore, each
C125.
system must be used independently of the other, without
combining values in any way.
4. Summary of Test Method
1.6 This standard does not purport to address all of the
4.1 Amortar sample is obtained by sieving a representative
safety concerns, if any, associated with its use. It is the
sample of fresh concrete. The mortar is placed in a container
responsibility of the user of this standard to establish appro-
and stored at a specified ambient temperature. At regular time
priate safety and health practices and determine the applica-
intervals, the resistance of the mortar to penetration by stan-
bility of regulatory limitations prior to use.
dardneedlesismeasured.Fromaplotofpenetrationresistance
versus elapsed time, the times of initial and final setting are
2. Referenced Documents
2 determined.
2.1 ASTM Standards:
C125 Terminology Relating to Concrete and Concrete
5. Significance and Use
Aggregates
5.1 Since the setting of concrete is a gradual process, any
C 143/C 143M Test Method for Slump of Hydraulic-
definition of time of setting must necessarily be arbitrary. In
Cement Concrete
this test method, the times required for the mortar to reach
C172 Practice for Sampling Freshly Mixed Concrete
specified values of resistance to penetration are used to define
C173/C173M Test Method for Air Content of Freshly
times of setting.
Mixed Concrete by the Volumetric Method
5.2 This test method can be used to determine the effects of
variables, such as water content; brand, type and amount of
cementitious material; or admixtures, upon the time of setting
1
This test method is under the jurisdiction of ASTM Committee C09 on
of concrete. This test method may also be used to determine
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
compliance with specified time-of-setting requirements.
C09.23 on Chemical Admixtures.
5.3 This test method may also be applied to prepared
Current edition approved Dec. 15, 2006. Published January 2007. Originally
approved in 1957. Last previous edition approved in 2005 as C403/C403M–05.
mortarsandgrouts.However,whenthesettingtimeofconcrete
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
is desired, the test shall be performed on mortar sieved from
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the concrete mixture and not on a prepared mortar intended to
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. simulate the mortar fraction of the concrete; it has been shown
*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.
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C403/C403M–06
that the initial and final setting times may be increased when 7.2.2 For other tests, prepare three test specimens from one
using the prepared mortar. batch of concrete for each test variable.
7.3 Record the time at which initial contact was mad
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