ASTM C652-12

Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)

ABSTRACT
This specification covers hollow building brick and hollow facing brick made from clay, shale, fire clay, or mixtures thereof, and fired to incipient fusion. Hollow brick shall be understood to mean hollow clay masonry units whose net cross-sectional area (solid area) in any plane parallel to the surface, containing the cores, cells, or deep frogs, is less than 75 % of its gross cross-sectional area measured in the same plane. The bricks are manufactured from clay, shale, or similar naturally occurring substances and subjected to a heat treatment at elevated temperatures (firing). The heat treatment shall develop sufficient fired bond between the particulate constituents to provide the strength and durability requirements specified. Bricks that are colored by flashing or textured by sanding, where sand does not form a continuous coating, shall not be considered as surface-colored brick. Hollow bricks require greater shell and web thicknesses and higher minimum compressive strength than structural clay tile, but permit greater void area and lesser distance from exposed edge to core hole than solid brick. Therefore, environmental and structural performance may be different in elements constructed of hollow brick from those constructed of structural clay tile or solid brick. The hollow bricks can be classified into Grades SW and MW according to their degree of resistance to frost action and disintegration by weathering. According to their physical properties, the bricks can be classified into Types HBS, HBX, HBA, and HBB. In terms of size of void areas or hollow spaces, the bricks can be designated into Classes H40V and H60V. The brick shall be free of defects, deficiencies, and surface treatments, including coatings, that would interfere with the proper laying of the brick or significantly impair the strength or performance of the construction. Physical properties like compressive strength, water absorption, saturation coefficient, breakage, and cracks shall be determined.
SCOPE
1.1 This specification covers hollow building brick and hollow facing brick made from clay, shale, fire clay, or mixtures thereof, and fired to incipient fusion. Four types of hollow brick in each of two grades and two classes are covered. In this specification, the term hollow brick shall be understood to mean hollow clay masonry units whose net cross-sectional area (solid area) in any plane parallel to the surface, containing the cores, cells, or deep frogs, is less than 75 % of its gross cross-sectional area measured in the same plane (see 3.3). This specification does not cover brick intended for use as paving brick (see Specification C902).  
1.2 The property requirements of this specification apply at the time of purchase. The use of results from testing of brick extracted from masonry structures for determining conformance or nonconformance to the property requirements (Section 5) of this standard is beyond the scope of this specification.  
1.3 Brick covered by this specification are manufactured from clay, shale, or similar naturally occurring substances and subjected to a heat treatment at elevated temperatures (firing). The heat treatment shall develop sufficient fired bond between the particulate constituents to provide the strength and durability requirements of this specification. (See “firing” and “firing bond” in Terminology C1232.)  
1.4 Hollow brick differ from unglazed structural clay tile (Specifications C34 and C212) and solid brick (Specifications C62 and C216). Hollow brick require greater shell and web thicknesses and higher minimum compressive strength than structural clay tile, but permit greater void area and lesser distance from exposed edge to core hole than solid brick. Therefore, environmental and structural performance may be different in elements constructed of hollow brick from those constructed of structural clay tile or solid brick.  
1.5 The text of this specification references notes and ...

General Information

• Status: Historical
• Publication Date: 30-Jun-2012
• ICS: 91.100.15 - Mineral materials and products
• Technical Committee: C15 - Manufactured Masonry Units
• Drafting Committee: C15.02 - Brick and Structural Clay Tile

Relations

• Replaces: ASTM C652-11 - Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
• Effective Date: 01-Jul-2012
• Replaced By: ASTM C652-12a - Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
• Effective Date: 01-Dec-2012
• Referred By: ASTM E2266-22 - Standard Guide for Design and Construction of Low-Rise Frame Building Wall Systems to Resist Water Intrusion
• Effective Date: 01-Jul-2012
• Referred By: ASTM C1232-21a - Standard Terminology for Masonry
• Effective Date: 01-Jul-2012
• Referred By: ASTM C1283-15(2021) - Standard Practice for Installing Clay Flue Lining
• Effective Date: 01-Jul-2012

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:C652 −12
StandardSpecification for
Hollow Brick (Hollow Masonry Units Made From Clay or
1
Shale)
This standard is issued under the fixed designation C652; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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 Department of Defense.
1. Scope* 1.5 The text of this specification references notes and
footnotes which provide explanatory material.These notes and
1.1 This specification covers hollow building brick and
footnotes (excluding those in tables and figures) shall not be
hollow facing brick made from clay, shale, fire clay, or
considered as requirements of the specification.
mixtures thereof, and fired to incipient fusion. Four types of
hollowbrickineachoftwogradesandtwoclassesarecovered. 1.6 The values stated in inch-pound units are to be regarded
In this specification, the term hollow brick shall be understood as standard. The values given in parentheses are mathematical
to mean hollow clay masonry units whose net cross-sectional conversions to SI units that are provided for information only
area(solidarea)inanyplaneparalleltothesurface,containing and are not considered standard.
the cores, cells, or deep frogs, is less than 75% of its gross
2. Referenced Documents
cross-sectional area measured in the same plane (see 3.3).This
2
specification does not cover brick intended for use as paving 2.1 ASTM Standards:
brick (see Specification C902).
C34Specification for Structural Clay Load-Bearing Wall
Tile
1.2 The property requirements of this specification apply at
C62Specification for Building Brick (Solid Masonry Units
the time of purchase. The use of results from testing of brick
Made From Clay or Shale)
extracted from masonry structures for determining confor-
C67Test Methods for Sampling and Testing Brick and
mance or nonconformance to the property requirements (Sec-
Structural Clay Tile
tion5)ofthisstandardisbeyondthescopeofthisspecification.
C212Specification for Structural Clay Facing Tile
1.3 Brick covered by this specification are manufactured
C216Specification for Facing Brick (Solid Masonry Units
from clay, shale, or similar naturally occurring substances and
Made from Clay or Shale)
subjected to a heat treatment at elevated temperatures (firing).
C902Specification for Pedestrian and Light Traffic Paving
The heat treatment shall develop sufficient fired bond between
Brick
the particulate constituents to provide the strength and dura-
C1232Terminology of Masonry
bility requirements of this specification. (See “firing” and
E835/E835MGuide for Modular Coordination of Clay and
“firing bond” in Terminology C1232.) 3
Concrete Masonry Units (Withdrawn 2011)
1.4 Hollow brick differ from unglazed structural clay tile
3. Classification
(Specifications C34 and C212) and solid brick (Specifications
C62 and C216). Hollow brick require greater shell and web 3.1 Grades—Two grades of hollow brick are covered:
thicknesses and higher minimum compressive strength than 3.1.1 Grade SW—Hollow brick intended for use where a
structural clay tile, but permit greater void area and lesser high and uniform degree of resistance to frost action and
distance from exposed edge to core hole than solid brick. disintegration by weathering is desired and the exposure is
Therefore, environmental and structural performance may be suchthatthehollowbrickmaybefrozenwhenpermeatedwith
different in elements constructed of hollow brick from those water.
constructed of structural clay tile or solid brick. 3.1.2 Grade MW—Hollow brick intended for use where a
moderate and somewhat nonuniform degree of resistance to
1 2
This specification is under the jurisdiction of ASTM Committee C15 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Manufactured Masonry Units and is the direct responsibility of Subcommittee contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
C15.02 on Brick and Structural Clay Tile. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved July 1, 2012. Published September 2012. Originally the ASTM website.
3
approved in 1970. Last previous edition approved in 2011 as C652–11. DOI: The last approved version of this historical standard is referenced on
10.1520/C0652-12. www.astm.org.
*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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C652−12
frost action is permissible or where they are unlikely to be nis
...

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: C652 − 11 C652 − 12
Standard Specification for
Hollow Brick (Hollow Masonry Units Made From Clay or
1
Shale)
This standard is issued under the fixed designation C652; 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 Department of Defense.
1. Scope*
1.1 This specification covers hollow building brick and hollow facing brick made from clay, shale, fire clay, or mixtures thereof,
and fired to incipient fusion. Four types of hollow brick in each of two grades and two classes are covered. In this specification,
the term hollow brick shall be understood to mean hollow clay masonry units whose net cross-sectional area (solid area) in any
plane parallel to the surface, containing the cores, cells, or deep frogs, is less than 75 % of its gross cross-sectional area measured
in the same plane (see 3.3). This specification does not cover brick intended for use as paving brick (see Specification C902).
1.2 The property requirements of this sspecificationspecification apply at the time of purchase. The use of results from testing
of brick extracted from masonry structures for determining conformance or nonconformance to the property requirements (Section
5) of this standard is beyond the scope of this specification.
1.3 Brick covered by this specification are manufactured from clay, shale, or similar naturally occurring substances and
subjected to a heat treatment at elevated temperatures (firing). The heat treatment shall develop sufficient fired bond between the
particulate constituents to provide the strength and durability requirements of this specification. (See “firing” and “firing bond” in
Terminology C1232.)
1.4 Hollow brick differ from unglazed structural clay tile (Specifications C34 and C212) and solid brick (Specifications C62 and
C216). Hollow brick require greater shell and web thicknesses and higher minimum compressive strength than structural clay tile,
but permit greater void area and lesser distance from exposed edge to core hole than solid brick. Therefore, environmental and
structural performance may be different in elements constructed of hollow brick from those constructed of structural clay tile or
solid brick.
1.5 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of the specification.
1.6 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C34 Specification for Structural Clay Load-Bearing Wall Tile
C62 Specification for Building Brick (Solid Masonry Units Made From Clay or Shale)
C67 Test Methods for Sampling and Testing Brick and Structural Clay Tile
C212 Specification for Structural Clay Facing Tile
C216 Specification for Facing Brick (Solid Masonry Units Made from Clay or Shale)
C902 Specification for Pedestrian and Light Traffic Paving Brick
C1232 Terminology of Masonry
3
E835/E835M Guide for Modular Coordination of Clay and Concrete Masonry Units (Withdrawn 2011)
1
This specification is under the jurisdiction of ASTM Committee C15 on Manufactured Masonry Units and is the direct responsibility of Subcommittee C15.02 on Brick
and Structural Clay Tile.
Current edition approved Aug. 15, 2011July 1, 2012. Published August 2011 September 2012. Originally approved in 1970. Last previous edition approved in 20102011
as C652 – 10.C652 – 11. DOI: 10.1520/C0652-11.10.1520/C0652-12.
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.
3
The last approved version of this historical standard is referenced on www.astm.org.
*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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C652 − 12
3. Classification
3.1 Grades—Two grades of hollow brick are covered
...