ASTM C1372-23
(Specification)Standard Specification for Dry-Cast Segmental Retaining Wall Units
Standard Specification for Dry-Cast Segmental Retaining Wall Units
ABSTRACT
This specification covers dry–cast segmental retaining wall units of concrete, machine–made from hydraulic cement, water, and suitable mineral aggregates with or without the inclusion of other materials. The units are intended for use in the construction of mortarless segmental retaining walls. The material composition of retaining wall units consists of cementitious materials like portland cement and its modified form, limestone, hydraulic cement, blended hydraulic cement, pozzolans, blast furnace slag cement, aggregates, and other constituents which include air-entraining agents, coloring pigments, integral water repellents, and finely ground silica. All units shall be sound and free of cracks or other defects that interfere with the proper placement of the unit or significantly impair the strength or permanence of the construction.
SCOPE
1.1 This specification covers dry-cast segmental retaining wall units of concrete, machine–made from hydraulic cement, water, and suitable mineral aggregates with or without the inclusion of other materials. The units are intended for use in the construction of mortarless segmental retaining walls.
Note 1: When particular features are desired, such as density classification, higher compressive strength, surface texture, finish, color, or other special features, such properties should be specified separately by the purchaser. Suppliers should be consulted as to availability of units having the desired features.
1.2 The text of this standard references notes and footnotes that 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 inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 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.
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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: C1372 − 23
Standard Specification for
1
Dry-Cast Segmental Retaining Wall Units
This standard is issued under the fixed designation C1372; 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* Concrete Masonry Units
C595/C595M Specification for Blended Hydraulic Cements
1.1 This specification covers dry-cast segmental retaining
C618 Specification for Coal Ash and Raw or Calcined
wall units of concrete, machine–made from hydraulic cement,
Natural Pozzolan for Use in Concrete
water, and suitable mineral aggregates with or without the
C979/C979M Specification for Pigments for Integrally Col-
inclusion of other materials. The units are intended for use in
ored Concrete
the construction of mortarless segmental retaining walls.
C989/C989M Specification for Slag Cement for Use in
NOTE 1—When particular features are desired, such as density
Concrete and Mortars
classification, higher compressive strength, surface texture, finish, color,
C1157/C1157M Performance Specification for Hydraulic
or other special features, such properties should be specified separately by
Cement
the purchaser. Suppliers should be consulted as to availability of units
C1232 Terminology for Masonry
having the desired features.
C1240 Specification for Silica Fume Used in Cementitious
1.2 The text of this standard references notes and footnotes
Mixtures
that provide explanatory material. These notes and footnotes
C1262/C1262M Test Method for Evaluating the Freeze-
(excluding those in tables and figures) shall not be considered
Thaw Durability of Dry-Cast Segmental Retaining Wall
as requirements of the standard.
Units and Related Concrete Units
1.3 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
3. Terminology
conversions to SI units that are provided for information only
3.1 Terminology defined in Terminology C1232 shall apply
and are not considered standard.
for this specification.
1.4 This international standard was developed in accor-
3.2 Definitions:
dance with internationally recognized principles on standard-
3.2.1 Dry-cast, adj—manufacturing concrete products using
ization established in the Decision on Principles for the
low frequency, high amplitude vibration to consolidate con-
Development of International Standards, Guides and Recom-
crete of stiff or extremely dry consistency in a form.
mendations issued by the World Trade Organization Technical
3.2.2 segmental retaining wall unit, n—unit manufactured
Barriers to Trade (TBT) Committee.
of concrete for the construction of dry-stacked earth retaining
walls.
2. Referenced Documents
2
3.2.3 segmental retaining wall unit, dry-cast, n—a segmen-
2.1 ASTM Standards:
tal retaining wall unit manufactured of concrete using a
C33/C33M Specification for Concrete Aggregates
dry-cast process.
C140/C140M Test Methods for Sampling and Testing Con-
crete Masonry Units and Related Units
4. Materials
C150/C150M Specification for Portland Cement
C331/C331M Specification for Lightweight Aggregates for
4.1 Cementitious Materials—Cementitious materials shall
conform to the following applicable specifications:
4.1.1 Portland Cements—Specification C150/C150M.
1
This specification is under the jurisdiction of ASTM Committee C15 on
4.1.2 Modified Portland Cement—Portland cement con-
Manufactured Masonry Units and is the direct responsibility of C15.03 on Concrete
forming to Specification C150/C150M, modified as follows:
Masonry Units and Related Units.
(1) Limestone—If calcium carbonate is added to the
Current edition approved Dec. 1, 2023. Published December 2023. Originally
cement, the CaCO content shall not be less than 85 %.
approved in 1997. Last previous edition approved in 2022 as C1372 – 22. DOI:
3
10.1520/C1372-23.
(2) Limitation on Insoluble Residue—1.5 %.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
(3) Limitation on Air Content of Mortar—Volume percent,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
22 % max.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. (4) Limitation on Loss of Ignition—7 %.
*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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C1372 − 23
4.1.3 Blended Hydraulic
...
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: C1372 − 22 C1372 − 23
Standard Specification for
1
Dry-Cast Segmental Retaining Wall Units
This standard is issued under the fixed designation C1372; 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*
1.1 This specification covers dry-cast segmental retaining wall units of concrete, machine–made from hydraulic cement, water,
and suitable mineral aggregates with or without the inclusion of other materials. The units are intended for use in the construction
of mortarless segmental retaining walls.
NOTE 1—When particular features are desired, such as density classification, higher compressive strength, surface texture, finish, color, or other special
features, such properties should be specified separately by the purchaser. Suppliers should be consulted as to availability of units having the desired
features.
1.2 The text of this standard references notes and footnotes that 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 inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.4 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:
C33/C33M Specification for Concrete Aggregates
C140/C140M Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
C150/C150M Specification for Portland Cement
C331/C331M Specification for Lightweight Aggregates for Concrete Masonry Units
C595/C595M Specification for Blended Hydraulic Cements
C618 Specification for Coal Ash and Raw or Calcined Natural Pozzolan for Use in Concrete
C979/C979M Specification for Pigments for Integrally Colored Concrete
C989/C989M Specification for Slag Cement for Use in Concrete and Mortars
C1157/C1157M Performance Specification for Hydraulic Cement
C1232 Terminology for Masonry
C1240 Specification for Silica Fume Used in Cementitious Mixtures
1
This specification is under the jurisdiction of ASTM Committee C15 on Manufactured Masonry Units and is the direct responsibility of C15.03 on Concrete Masonry
Units and Related Units.
Current edition approved Dec. 15, 2022Dec. 1, 2023. Published January 2023December 2023. Originally approved in 1997. Last previous edition approved in 20172022
as C1372 – 17.C1372 – 22. DOI: 10.1520/C1372-22.10.1520/C1372-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. 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 ----------------------
C1372 − 23
C1262/C1262M Test Method for Evaluating the Freeze-Thaw Durability of Dry-Cast Segmental Retaining Wall Units and
Related Concrete Units
3. Terminology
3.1 Terminology defined in Terminology C1232 shall apply for this specification.
3.2 Definitions:
3.2.1 Dry-cast, adj—manufacturing concrete products using low frequency, high amplitude vibration to consolidate concrete of
stiff or extremely dry consistency in a form.
3.2.2 segmental retaining wall unit, n—unit manufactured of concrete for the construction of dry-stacked earth retaining walls.
3.2.3 segmental retaining wall unit, dry-cast, n—a segmental retaining wall unit manufactured of concrete using a dry-cast
process.
4. Materials
4.1 Cementitious Materials—Materials Cementitious materials shall conform to the following applicable specifications:
4.1.1 Portland Cements—Specification C150/C150M.
4.1.2 Modified Portland Cement—Portland cement conforming to Specification C150/C150M, modified as follows:
(1) Limestone—If calcium carbonate is added to the cement, the CaCO content shall not be less tha
...
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