ASTM C470/C470M-23

Standard Specification for Molds for Forming Concrete Test Cylinders Vertically

ABSTRACT
This specification deals with molds for forming concrete test cylinders vertically. Molds shall be constructed in the form of right circular cylinders and have a nominal inside height equal to twice the nominal inside diameter. The following are types of molds covered: reusable molds and single-use molds. Reusable molds shall be made of nonabsorptive materials and shall be tested for water leakage. Single-use molds may be made of sheet metal, plastic, suitably treated paper products, or other materials. These materials shall conform to the following requirements: water leakage, absorptivity, and elongation. The following are additional requirements for the types of single-use molds: plastic mold—wall thickness, bottom design, and material; paper molds—side walls, bottom caps, and waterproofing; and sheet metal molds—metal thickness, bottom design, top edge, and coating. Test for elongation, absorption, and water leakage shall also be performed.
SCOPE
1.1 This specification covers molds for use in forming cylindrical concrete specimens. The provisions of this specification include the requirements for both reusable and single-use molds.  
Note 1: Sizes included are molds having diameters from 50 mm [2 in.] to 900 mm [36 in.].  
1.2 The text of this standard refers to notes and footnotes that which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and the values from the two systems shall not be combined.  
1.4 The following safety hazards caveat pertains only to the test method described in this specification: 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.  
1.5 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.

General Information

• Status: Published
• Publication Date: 31-May-2023
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.61 - Testing for Strength

Standards Content (Sample)

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: C470/C470M − 23
Standard Specification for
1
Molds for Forming Concrete Test Cylinders Vertically
This standard is issued under the fixed designation C470/C470M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This specification covers molds for use in forming
C31/C31M Practice for Making and Curing Concrete Test
cylindrical concrete specimens. The provisions of this specifi-
Specimens in the Field
cation include the requirements for both reusable and single-
C33/C33M Specification for Concrete Aggregates
use molds.
C125 Terminology Relating to Concrete and Concrete Ag-
NOTE 1—Sizes included are molds having diameters from 50 mm [2 in.]
gregates
to 900 mm [36 in.].
C192/C192M Practice for Making and Curing Concrete Test
1.2 The text of this standard refers to notes and footnotes Specimens in the Laboratory
that which provide explanatory material. These notes and C1077 Practice for Agencies Testing Concrete and Concrete
footnotes (excluding those in tables and figures) shall not be Aggregates for Use in Construction and Criteria for
considered as requirements of the standard. Testing Agency Evaluation
D256 Test Methods for Determining the Izod Pendulum
1.3 The values stated in either SI units or inch-pound units
Impact Resistance of Plastics
are to be regarded separately as standard. The values stated in
D570 Test Method for Water Absorption of Plastics
each system are not necessarily exact equivalents; therefore, to
ensure conformance with the standard, each system shall be
3. Terminology
used independently of the other, and the values from the two
3.1 Definitions:
systems shall not be combined.
3.1.1 For definitions of terms used in this test specification,
1.4 The following safety hazards caveat pertains only to the refer to Terminology C125.
test method described in this specification: This standard does
4. General Requirements
not purport to address all of the safety concerns, if any,
associated with its use. It is the responsibility of the user of this
4.1 The following provisions apply to both reusable and
standard to establish appropriate safety, health, and environ-
single-use molds:
mental practices and determine the applicability of regulatory
4.1.1 Molds shall be constructed in the form of right circular
limitations prior to use.
cylinders which stand with the cylindrical axis vertical and the
top open to receive the concrete. They shall be made of
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard- materials that do not react with concrete containing portland or
other hydraulic cements. They shall be watertight and suffi-
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- ciently strong and tough to permit their use without tearing,
crushing, or deforming.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
NOTE 2—Reusable lids may be used on molds to reduce moisture loss.
4.1.2 Molds shall have a nominal inside height equal to
twice the nominal inside diameter. The diameter of a mold,
1
This specification is under the jurisdiction of ASTM Committee C09 on
Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee
2
C09.61 on Testing for Strength. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved June 1, 2023. Published July 2023. Originally approved contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
in 1961. Last previous edition approved in 2015 as C470/C470M – 15. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C0470_C0470M-23. the ASTM website.
*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
1

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C470/C470M − 23
consisting of the average of two measurements taken at right 6.2 Physical Requirements—The molds as prepared for use
angles to each other at the top of the mold, shall not differ from shall comply with the following:
the nominal diameter by more than 1 %. The height, deter- 6.2.1 Wa
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C470/C470M − 15 C470/C470M − 23
Standard Specification for
1
Molds for Forming Concrete Test Cylinders Vertically
This standard is issued under the fixed designation C470/C470M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification covers molds for use in forming cylindrical concrete specimens. The provisions of this specification include
the requirements for both reusable and single-use molds.
NOTE 1—Sizes included are molds having diameters from 50 mm [2 in.] to 900 mm [36 in.].
1.2 The text of this standard references refers to notes and footnotes that which provide explanatory material. These notes and
footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.
1.3 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 beare not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be
used independently of the other. Combining other, and the values from the two systems may result in non-conformance with the
standard. The inch-pound units are shown in brackets.shall not be combined.
1.4 The following safety hazards caveat pertains only to the test method described in this specification: 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.
1.5 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C31/C31M Practice for Making and Curing Concrete Test Specimens in the Field
C33C33/C33M Specification for Concrete Aggregates
C125 Terminology Relating to Concrete and Concrete Aggregates
C192/C192M Practice for Making and Curing Concrete Test Specimens in the Laboratory
C1077 Practice for Agencies Testing Concrete and Concrete Aggregates for Use in Construction and Criteria for Testing Agency
Evaluation
1
This specification is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.61 on
Testing for Strength.
Current edition approved Feb. 1, 2015June 1, 2023. Published March 2015July 2023. Originally approved in 1961. Last previous edition approved in 20092015 as
C470/C470M – 09. DOI: 10.1520/C0470_C0470M-15.15. DOI: 10.1520/C0470_C0470M-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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
1

---------------------- Page: 1 ----------------------
C470/C470M − 23
D256 Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics
D570 Test Method for Water Absorption of Plastics
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this test specification, refer to Terminology C125.
4. General Requirements
4.1 The following provisions apply to both reusable and single-use molds:
4.1.1 Molds shall be constructed in the form of right circular cylinders which stand with the cylindrical axis vertical and the top
open to receive the concrete. They shall be made of materials that do not react with concrete containing portland or other hydraulic
cements. They shall be watertight and sufficiently strong and tough to permit their use without tearing, crushing, or deforming.
NOTE 2—Reusable lids may be used on molds to reduce moisture loss.
4.1.2 Molds shall have a nominal inside height equal to twice the nominal inside diameter. The diam
...