ASTM C1634-06

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: C1634 – 06
Standard Specification for
Concrete Facing Brick
This standard is issued under the fixed designation C1634; 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 C140 Test Methods for Sampling and Testing Concrete
Masonry Units and Related Units
1.1 This specification covers solid, dry-cast, concrete facing
C150 Specification for Portland Cement
brick intended for interior and exterior use in constructing
C331 Specification for Lightweight Aggregates for Con-
structural and facing masonry components and are made from
crete Masonry Units
portlandcement,water,andsuitablemineralaggregateswithor
C426 Test Method for Linear Drying Shrinkage of Concrete
without the inclusion of other materials.
Masonry Units
NOTE 1—Specification C55 addresses concrete building brick used in
C595 Specification for Blended Hydraulic Cements
non-facing, utilitarian applications (previously referred to in earlier
C618 Specification for Coal Fly Ash and Raw or Calcined
editions of Specification C 55C55 as Grade S—for general use where
Natural Pozzolan for Use in Concrete
moderate strength and resistance to frost action and moisture penetration
C989 Specification for Slag Cement for Use in Concrete
are required). This specification differs from Specification C55 in that it
and Mortars
includes expanded consideration for properties of concrete brick used in
facing applications and other exposures (previously referred to in earlier
C1157 Performance Specification for Hydraulic Cement
editions of Specification C55 as Grade N—for use as architectural veneer
C1209 Terminology of Concrete Masonry Units and Re-
and facing units in exterior walls and for use where high strength and 3
lated Units
resistance to moisture penetration and severe frost action are desired).
C1232 Terminology of Masonry
1.2 The text of this specification references notes and
3. Terminology
footnotes which provide explanatory material. These notes and
footnotes (excluding those in tables and figures) shall not be
3.1 Terminology defined in Terminology C1209 and Termi-
considered as requirements of the standard.
nology C1232 shall apply for this specification.
1.3 The values stated in inch-pound units are to be regarded
3.2 Definitions of Terms Specific to This Standard:
as the standard. The values given parentheses are for informa-
3.3 concrete building brick, n—a concrete masonry unit,
tion only.
with a maximum width of four (4) inches and of a weight that
will typically permit it to be lifted and placed with one hand,
NOTE 2—Concrete facing brick covered by this specification are made
that is manufactured for general use in non-facing, utilitarian
from lightweight or normal weight aggregates, or both.
applications.
NOTE 3—When particular features are desired, such as density classi-
fication, high compressive strength, surface textures for appearance or
3.4 concrete facing brick, n—a concrete masonry unit, with
bond, finish, color, fire resistance, insulation, acoustical properties, or
a maximum width of four (4) inches and of a weight that will
other special features, such properties should be specified separately by
typically permit it to be lifted and placed with one hand, that is
the purchaser. Suppliers should be consulted as to the availability of
manufactured to be typically used in an application where one
concrete facing brick having the desired features.
or more faces of the unit is intended to be exposed.
2. Referenced Documents
4. Materials and Manufacture
2.1 ASTM Standards:
4.1 Cementitious Materials—Materials shall conform to the
C33 Specification for Concrete Aggregates
following applicable specifications:
C55 Specification for Concrete Building Brick
4.1.1 Portland Cement—Specification C150.
4.1.2 Modified Portland Cement—Portland cement con-
forming to Specification C150, modified as follows:
This specification is under the jurisdiction of ASTM Committee C15 on
4.1.2.1 Limestone—Calcium carbonate, with a minimum
Manufactured Masonry Units and is the direct responsibility of Subcommittee
85 % CaCO content, is permitted to be added to the cement,
C15.03 on Concrete Masonry Units and Related Units.
provided these requirements of Specification C150 as modified
Current edition approved Dec. 15, 2006. Published January 2007. DOI: 10.1520/
C1634-06.
are met:
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 Withdrawn. The last approved version of this historical standard is referenced
the ASTM website. on www.astm.org.
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C1634 – 06
(1) Limitation on Insoluble Residue—1.5 %. 6.2 For cored concrete facing brick, the net cross-sectional
(2) Limitation on Air Content of Mortar—Volume percent, area in any plane parallel to the surface containing the cores
22 % max. shall be at least 75 % of the gross cross-sectional area
(3) Limitation on Loss on Ignition—7%. measured in the same plane. No part of any hole shall be less
4.1.3 Blended Hydraulic Cements—Specification C595. than ⁄4 in. (19.1 mm) from any edge of the unit.
4.1.4 Hydraulic Cement—Specification C1157.
4.1.5 Pozzolans—Specification C618.
7. Finish and Appearance
4.1.6 Blast Furnace Slag Cement—Specification C989.
7.1 All units shall be sound and free of cracks or other
4.2 Aggregates—Aggregates shall conform to the following
defects that interfere with the proper placement of the units or
specifications, except that grading requirements shall not
significantlyimpairthestrengthorpermanenceoftheconstruc-
necessarily apply:
tion. Minor cracks incidental to the usual method of manufac-
4.2.1 Normal Weight Aggregates—Specification C33.
ture or minor chipping resulting from customary methods of
4.2.2 Lightweight Aggregates—Specification C331.
handling in shipment and delivery are not grounds for rejec-
4.3 Other Constituents—Air-entraining agents, coloring
tion.
pigments, integral water repellents, finely ground silica, and
7.2 Where un
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