ASTM C1856/C1856M-17

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C1856/C1856M − 17
Standard Practice for
Fabricating and Testing Specimens of Ultra-High
Performance Concrete
This standard is issued under the fixed designation C1856/C1856M; 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 1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard-
1.1 This practice covers procedures for fabricating and
ization established in the Decision on Principles for the
testing specimens in the laboratory and the field using a
Development of International Standards, Guides and Recom-
representative sample of ultra-high performance concrete
mendations issued by the World Trade Organization Technical
(UHPC), for the purpose of determining the properties of the
Barriers to Trade (TBT) Committee.
material. This practice is applicable to UHPC with a specified
compressive strength of at least 120 MPa (17 000 psi), with
2. Referenced Documents
nominal maximum size aggregate of less than 5 mm [ ⁄4 in.]
2.1 ASTM Standards:
andaflowbetween200and250mm[8and10in.]asmeasured
C31/C31M Practice for Making and Curing Concrete Test
by the modified flow table test described in Section 6.
Specimens in the Field
1.2 The values stated in either SI units or inch-pound units
C39/C39M Test Method for Compressive Strength of Cylin-
are to be regarded separately as standard. The values stated in
drical Concrete Specimens
each system may not be exact equivalents; therefore, each
C42/C42M Test Method for Obtaining and Testing Drilled
system shall be used independently of the other. Combining
Cores and Sawed Beams of Concrete
values from the two systems may result in non-conformance
C125 Terminology Relating to Concrete and Concrete Ag-
with the standard.
gregates
1.3 If required results obtained from another standard are C157/C157M Test Method for Length Change of Hardened
not reported in the same system of units as used by this
Hydraulic-Cement Mortar and Concrete
standard, it is permitted to convert those results using the C191 TestMethodsforTimeofSettingofHydraulicCement
conversion factors found in the SI Quick Reference Guide (1).
by Vicat Needle
C192/C192M Practice for Making and Curing Concrete Test
1.4 The text of this standard references notes and footnotes
Specimens in the Laboratory
that provide explanatory material. These notes and footnotes
C219 Terminology Relating to Hydraulic Cement
(excluding those in tables and figures) shall not be considered
C230/C230M Specification for Flow Table for Use in Tests
as requirements of this standard.
of Hydraulic Cement
1.5 This standard does not purport to address all of the
C341/C341M Practice for Preparation and Conditioning of
safety concerns, if any, associated with its use. It is the
Cast, Drilled, or Sawed Specimens of Hydraulic-Cement
responsibility of the user of this standard to establish appro-
Mortar and Concrete Used for Length Change Measure-
priate safety and health practices and determine the applica-
ments
bilityofregulatorylimitationspriortouse.[WARNING—Fresh
C469/C469M Test Method for Static Modulus of Elasticity
hydraulic cementitious mixtures are caustic and may cause
and Poisson’s Ratio of Concrete in Compression
chemical burns to exposed skin and tissue upon prolonged
C512/C512M Test Method for Creep of Concrete in Com-
exposure. Hand protection should be worn when handling
pression
UHPC.]
C666/C666M Test Method for Resistance of Concrete to
Rapid Freezing and Thawing
This practice is under the jurisdiction of ASTM Committee C09 on Concrete
C944/C944M Test Method for Abrasion Resistance of Con-
andConcreteAggregatesandisthedirectresponsibilityofSubcommitteeC09.61on
crete or Mortar Surfaces by the Rotating-Cutter Method
Testing for Strength.
Current edition approved May 15, 2017. Published June 2017. DOI: 10.1520/
C1856_C1856M-17.
2 4
The boldface numbers in parentheses refer to the list of references at the end of For referenced ASTM standards, visit the ASTM website, www.astm.org, or
this standard. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
SeesectiononSafetyPrecautions, Manual ofAggregates 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.
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C1856/C1856M − 17
C1202/C1202M Test Method for Electrical Indication of 7. Making and Curing Test Specimens
Concrete’s Ability to Resist Chloride Ion Penetration
7.1 General Requirements:
C1437 Test Method for Flow of Hydraulic Cement Mortar
7.1.1 If making test specimens of UHPC in the field, make
C1609/C1609M Test Method for Flexural Performance of
and initially cure the specimens in accordance with Practice
Fiber-ReinforcedConcrete(UsingBeamWithThird-Point
C31/C31M, with the exceptions described in this Practice.
Loading)
7.1.2 Make and cure test specimens made in the laboratory
in accordance with Practice C192/C192M, with the exceptions
3. Terminology
described in this Practice.
7.1.3 Obtain specimens from structures in accordance with
3.1 Definitions:
3.1.1 For definitions of terms used in this practice, refer to Test Method C42/C42M.
7.1.4 The size of specimens shall comply with Section 8, as
Terminologies C125 and C219.
3.2 Definitions of Terms Specific to This Standard: summarized in Table 1.
3.2.1 concrete, ultra-high performance, n—a cementitious
7.2 Molding of Specimens:
mixture that has a specified compressive strength of at least
7.2.1 Fill cylinder molds in one layer.
120MPa[17 000psi],generallycontainingfibersandhasother
7.2.2 Fill prism molds from one end, in one layer.
properties measured by standard test methods that comply with
7.2.3 Consolidate all specimens by tapping the sides of the
specified durability, ductility and toughness requirements.
mold 30 times with the mallet.
7.2.4 Tamping rods and internal vibrators shall not be used
4. Significance and Use
in fabricating and consolidating specimens from UHPC.
4.1 This practice includes procedures for measuring prop-
7.3 Curing:
erties of fresh UHPC and procedures for making and testing
7.3.1 Cure field-fabricated specimens in accordance with
specimens of hardened UHPC. The practice refers to existing
Practice C31/C31M and cure laboratory-fabricated specimens
practices and test methods and includes modifications to these
in accordance with Practice C192/C192M, with the following
referenced standards for application to UHPC.
exception.
7.3.1.1 Within 1 min after finishing the top surface, cover
5. Sampling of Fresh UHPC
the specimen to prevent drying of the top surface.
5.1 The sample shall be taken from the mixer following the
NOTE 2—UHPC contains low quantities of mixing water and virtually
completion of the mixing cycle. no bleed water, resulting in surface drying that may impact the hardened
properties, therefore it is important to cover the surface of the specimen
5.2 The sample shall be of sufficient size to complete the
with a plastic sheet or equivalent as quickly as possible.
testing and shall be at least 10 L [0.35 ft ].
7.4 Thermal Treatment:
7.4.1 If required by the specifier of tests, specimens shall be
6. Testing of Fresh Properties
thermally treated after demolding.
6.1 Flow:
7.4.2 If thermal treatment is required, place a temperature
6.1.1 Determine the flow of freshly mixed UHPC in accor-
sensor at the center of at least one cylinder.
dance withTest Method C1437, with the following exceptions.
7.4.3 Thermal treatment shall be conducted in accordance
6.1.1.1 The mold and flow table shall meet the requirements with Table 2.
of Specification C230/C230M. The concrete pedestal and cork
gasket are not required.
6.1.1.2 Fill the mold in a single layer with the fresh UHPC.
TABLE 1 Summary of Specimen Sizes
6.1.1.3 Do not tamp the UHPC in the mold and do not drop
Nominal Specimen
the table.
Property Test Method Comments
Sizes
6.1.1.4 After lifting the mold, wait until a time of 2 min 6
Compressive Strength C39/C39M 75 mm by 150 mm
5 s has elapsed.
[3 in. by 6 in.]
Flexural Strength C1609/ See 8.2.2 Sizes change
6.1.1.5 Measure the diameter of the UHPC along the lines
C1609M with fiber length
of maximum and minimum diameter, with a ruler or tape
Static Modulus of Elasticity C469/C469M 75 mm by 150 mm
measure, recording each diameter to the nearest 1 mm [ ⁄16
and Poisson’s Ratio [3 in. by 6 in.]
Creep in Compression C512/C512M 75 mm by 150 mm At least six
in.].Calculate the average of the two diameters measured. The
[3 in. by 6 in.] specimens
flow value is this average.
Length Change C157/C157M 75 mm by 75 mm
or by 285 mm
6.2 Time of Setting:
C341/C341M [3 in. by 3 in. by
6.2.1 Determine the time of setting in accordance with Test 1
11 ⁄4in.]
Resistance to Abrasion C944/C944M Minimum size to
Method C191, except the material used shall be UHPC poured
accommodate the
into the conical ring without consolidation and at the given
device
consistency referenced.
Resistance to Freezing and C666/C666M No limits Refer to C666/
Thawing C666M
NOTE 1—The consistency of the UHPC sample used to determine time
Penetration of Chloride C1202/ 100 mm [4 in.]
of setting should be the consistency specified for the mix or project and Ions C1202M diameter
not the normal consistency in Test Method C191.
C1856/C185
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