ASTM C943-02

Standard Practice for Making Test Cylinders and Prisms for Determining Strength and Density of Preplaced-Aggregate Concrete in the Laboratory

SIGNIFICANCE AND USE
This practice is used for making test cylinders or prisms of PA concrete. Cylinders are used for determining compressive strength and approximate density. Prisms, cut from cylinders, eliminate the surface effect and thus more accurately represent the actual density of PA concrete in place.
SCOPE
1.1 This practice covers procedures for making standard test cylinders used to determine the compressive strength and density of preplaced-aggregate (PA) concrete.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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

• Status: Historical
• Publication Date: 09-Dec-2002
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.41 - Hydraulic Cement Grouts

Relations

• Replaces: ASTM C943-96 - Standard Practice for Making Test Cylinders and Prisms for Determining Strength and Density of Preplaced-Aggregate Concrete in the Laboratory
• Effective Date: 10-Dec-2002
• Replaced By: ASTM C943-10 - Standard Practice for Making Test Cylinders and Prisms for Determining Strength and Density of Preplaced-Aggregate Concrete in the Laboratory
• Effective Date: 15-Jun-2010
• Referred By: ASTM C938-19 - Standard Practice for Proportioning Grout Mixtures for Preplaced-Aggregate Concrete
• Effective Date: 10-Dec-2002
• Referred By: ASTM C39/C39M-21 - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
• Effective Date: 10-Dec-2002

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C943–02
Standard Practice for
Making Test Cylinders and Prisms for Determining Strength
and Density of Preplaced-Aggregate Concrete in the
1
Laboratory
This standard is issued under the fixed designation C943; 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 Mixed Grouts for Preplaced-Aggregate Concrete in the
Laboratory
1.1 Thispracticecoversproceduresformakingstandardtest
cylinders used to determine the compressive strength and
3. Summary of Practice
density of preplaced-aggregate (PA) concrete.
3.1 Coarse aggregate is placed in a standard cylinder mold
1.2 The values stated in SI units are to be regarded as the
having end plates to which pipe fittings have been attached.
standard. The values given in parentheses are for information
Grout is pumped into the mold until full. The test cylinder,
only.
demolded after hardening, may be cured and used for deter-
1.3 This standard does not purport to address all of the
mination of strength or cut into prisms for the determination of
safety concerns, if any, associated with its use. It is the
unit weight.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Significance and Use
bility of regulatory limitations prior to use.
4.1 This practice is used for making test cylinders or prisms
of PA concrete. Cylinders are used for determining compres-
2. Referenced Documents
2
sive strength and approximate density. Prisms, cut from cylin-
2.1 ASTM Standards:
ders, eliminate the surface effect and thus more accurately
C192/C192M Practice for Making and Curing Concrete
represent the actual density of PA concrete in place.
Test Specimens in the Laboratory
C637 Specification for Aggregates for Radiation-Shielding
5. Apparatus
Concrete
5.1 Cylinder Molds (Fig. 1), cast iron or steel, for making
C937 Specification for Grout Fluidifier for Preplaced-
150 by 300-mm (6 by 12-in.) cylinders. Base and top plates
Aggregate Concrete
shall be arranged for tight assembly to the cylinder.All mating
C938 Practice for Proportioning Grout Mixtures for
and inside surfaces shall be machined smooth such that the
Preplaced-Aggregate Concrete
assembled mold will be essentially watertight. End plates shall
C939 Test Method for Flow of Grout for Preplaced-
be drilled and tapped at their centers for standard 19 mm
Aggregate Concrete (Flow Cone Method)
3
( ⁄4-in.) pipe nipples.The top end plate shall also be perforated,
C940 Test Method for Expansion and Bleeding of Freshly
as shown in Fig. 2.
5.2 Venting Fabric, white cotton cloth, free of oil and
1
This practice is under the jurisdiction of ASTM Committee C09 on Concrete
grease.
and Concrete Aggregates and is the direct responsibility of Subcommittee C09.41
5.3 Grouting Apparatus (Fig. 3), capable of delivering
on Concrete for Radiation Shielding.
3
grout at a uniform rate of 1.4 to 2.8 L (0.05 to 0.10 ft )/min at
Current edition approved Dec. 10, 2002. Published February 2003. Originally
pressures up to 345 kPa (50 psi).
approved in 1980. Last previous edition approved in 1996 as C943–96. DOI:
10.1520/C0943-02.
5.4 Mallet, with rubber or rawhide head weighing approxi-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1 1
mately ⁄4 kg ( ⁄2 lb).
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.5 Platform Scales,accuratetowithin0.3 %ofthetestload
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. at any point within the range of use.
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C943–02
9. Procedure
9.1 Temperature:
9.1.1 When test cylinders are prepared in the laboratory,
bring all materials to and maintain the laboratory in a tempera-
ture range of 23.0 6 2.0°C (73.5 6 3.5°F).
9.1.2 When test cylinders are prepared in the field, record
ambient temperature in the vicinity of test operation.
9.2 Place each cylinder mold upright on its bottom plate on
a firm, level surface.
9.3 Place the coarse aggregate in the mold in three approxi-
mately equal layers. Consolidate each layer by striking the
mold ten times around its periphery with the mallet. When the
moldhasbeenfilled,strikeoffthecontentssothatnoaggregate
particle projects above the plane of the top of the mold.
9.4 Place a single layer of venting fabric, in which a hole
3
has been cut to match the 19-mm ( ⁄4-in.) hole in the top end
plate, over the aggregate. Place the top pl
...