ASTM C878/C878M-03
(Test Method)Standard Test Method for Restrained Expansion of Shrinkage-Compensating Concrete
Standard Test Method for Restrained Expansion of Shrinkage-Compensating Concrete
SIGNIFICANCE AND USE
Since the potential for expansion, under conditions of controlled restraint, of concrete made with shrinkage-compensating cement cannot always be satisfactorily predicted from tests of mortars made in accordance with Test Method C 806, a need has been recognized for a test method in which concrete specimens are tested.
This test method can also be adapted readily to studies of expansion involving degrees of restraint, comparisons of cements, effects of cement contents, mixture proportions, schedules, or environmental treatments that differ from the standard procedures prescribed by this test method.
SCOPE
1.1 This test method covers the determination of the expansion of concrete made with shrinkage-compensating cement.
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 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.
General Information
Relations
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C878/C878M–03
Standard Test Method for
Restrained Expansion of Shrinkage-Compensating
1
Concrete
This standard is issued under the fixed designation C 878/C 878M; 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.
4
1. Scope 2.2 ACI Standards and Committee Reports:
116-R-90 Cement and Concrete Terminology
1.1 This test method covers the determination of the expan-
223-83 Standard Practice for the Use of Shrinkage-
sion of concrete made with shrinkage-compensating cement.
Compensating Concrete
1.2 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in
3. Terminology
each system may not be exact equivalents; therefore, each
3.1 Terms used in this test method are defined in Terminol-
system shall be used independently of the other. Combining
ogy C 219, Terminology C 125, and ACI 116-R-90.
values from the two systems may result in non-conformance
with the standard.
4. Significance and Use
1.3 This standard does not purport to address all of the
4.1 Since the potential for expansion, under conditions of
safety concerns, if any, associated with its use. It is the
controlled restraint, of concrete made with shrinkage-
responsibility of the user of this standard to establish appro-
compensating cement cannot always be satisfactorily predicted
priate safety and health practices and determine the applica-
from tests of mortars made in accordance with Test Method
bility of regulatory limitations prior to use.
C 806, a need has been recognized for a test method in which
concrete specimens are tested.
2. Referenced Documents
4.2 This test method can also be adapted readily to studies
2.1 ASTM Standards:
of expansion involving degrees of restraint, comparisons of
C 125 Terminology Relating to Concrete and Concrete
2
cements, effects of cement contents, mixture proportions,
Aggregates
schedules, or environmental treatments that differ from the
C 157/C 157M Test Method for Length Change of Hard-
2 standard procedures prescribed by this test method.
ened Hydraulic Cement, Mortar, and Concrete
C 192/C 192M Practice for Making and Curing Concrete
5. Apparatus
2
Test Specimens in the Laboratory
5.1 Molds, for casting test specimens, when used in con-
3
C 219 Terminology Relating to Hydraulic Cement
junction with the restraining cage described in 4.2, shall
C 403/C 403M TestMethodforTimeofSettingofConcrete
provide for forming prisms 76 mm [3 in.] square with a gage
2
Mixtures by Penetration Resistance
length of 250 mm [10 in.]. The molds shall otherwise conform
C 490 Practice for Use of Apparatus for the Determination
to the requirements for molds in Practice C 490, except that the
of Length Change of Hardened Cement Paste, Mortar, and
3 stud holder, gage studs, and spacer screws described in that
Concrete
practice will not be used.
C 670 Practice for Preparing Precision and Bias Statements
2 5.2 Restraining Cage, consisting of a threaded low-carbon
for Test Methods for Construction Materials
steel rod (plain or zinc-coated) with steel end plates held in
C 806 Test Method for Restrained Expansion of Expansive
3 place by hex nuts as shown in Fig. 1. The hex nuts outside the
Cement Mortar
3 cage shall be of stainless steel. Stainless steel cap nuts shall be
C 845 Specification for Expansive Hydraulic Cement
put on each end of the rod. When tested in tension, within the
elastic range, the rod shall have a strain of 2800 kN [0.0012 6
1
This method is under the jurisdiction of ASTM Committee C09 on Concrete
0.0001/630 lbf] of load (Note 1).
and Concrete Aggregates and is the direct responsibility of Subcommittee
NOTE 1—Itisintendedthatallrodsusedmeettheindicatedrequirement
C09.68 on Volume Change.
Current edition approved Jan. 10, 2003. Published April 2003. Originally
approved in 1978. Last previous edition approved in 1995 as C 878–95a.
2 4
Annual Book of ASTM Standards, Vol 04.02. Available fromAmerican Concrete Institute (ACI), P.O. Box 9094, Farmington
3
Annual Book of ASTM Standards, Vol 04.01. Hills, MI 48333.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
C878/C878M–03
Dimensions
Measurement
in. mm
9 1
A11 ⁄166 ⁄16 294 6 1.6
B 10 254 (gage length)
C3 76
31 1
D2 ⁄326 ⁄32 75 6 1
1
E1 ⁄2 38
31
F1 ⁄64 37.7
3
G ⁄8 10
3
H ⁄16 5
NOTE 1—All material is mild steel, except for stainless steel cap nuts.
FIG. 1 Restraining Cage
for strain. When a large number of rods are obtained as a single lot,
in.] in length, having at least t
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.