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; intended for use in masonry supplying structural and/or facing components to the structure. 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
4.3).
1.2 The requirements of this specification apply at the time of purchase. The use of results from testing of brick extracted from masonry structures for determining compliance with the requirements of this specification is beyond the intent of this standard.
1.3 This specification does not cover brick intended for use as paving brick (see Specification C902).
1.4 Brick covered by this specification are ceramic products manufactured primarily 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. Additives or recycled materials are permitted to be included at the option of the manufacturer. (See “firing” and “firing bond” in Terminology C1232.)
1.4.1 This specification and its individual requirements shall not be used to qualify or corroborate the performance of a masonry unit made from other materials, or made with other forming methods, or other means of binding the materials.
1.5 Four types of hollow brick in each of two grades and two classes are covered.
1.6 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.
1.7 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.
1.8 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.
1.9 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.
ASTM C652-22 Referenced Document
ASTM C1232 Standard Terminology for Masonry*, 2023-12-15 Update
ASTM C212 Standard Specification for Structural Clay Facing Tile
ASTM C216 Standard Specification for Facing Brick (Solid Masonry Units Made From Clay Or Shale)
ASTM C34 Standard Specification for Structural Clay Load-Bearing Wall Tile
ASTM C62 Standard Specification for Building Brick (Solid Masonry Units Made From Clay Or Shale)
ASTM C67/C67M Standard Test Methods for Sampling and Testing Brick and Structural Clay Tile*, 2023-06-01 Update
ASTM C902 Standard Specification for Pedestrian and Light Traffic Paving Brick
ASTM C652-22 history
2022ASTM C652-22 Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2021ASTM C652-21 Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2019ASTM C652-19b Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2019ASTM C652-19a Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2019ASTM C652-19 Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2017ASTM C652-17a Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2017ASTM C652-17 Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2015ASTM C652-15 Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2014ASTM C652-14 Standard Specification for Hollow Brick 40;Hollow Masonry Units Made From Clay or Shale41;
2013ASTM C652-13 Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2012ASTM C652-12a Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2012ASTM C652-12 Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2011ASTM C652-11 Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2010ASTM C652-10 Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2009ASTM C652-09 Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2007ASTM C652-07 Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2005ASTM C652-05a Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2005ASTM C652-05 Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2004ASTM C652-04a Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2004ASTM C652-04 Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2001ASTM C652-01a Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2001ASTM C652-01 Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
2000ASTM C652-00a Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
1977ASTM C652-77 Standard Specification for Hollow Brick (Hollow Masonry Units Made From Clay Or Shale)