ASTM C744-09
(Specification)Standard Specification for Prefaced Concrete and Calcium Silicate Masonry Units
Standard Specification for Prefaced Concrete and Calcium Silicate Masonry Units
ABSTRACT
This specification covers prefaced concrete and calcium silicate masonry units with the exposed-to-view-in-place surfaces are coated with resin, resin and inert filler, or cement and inert filler during manufacture. The coatings are intended to produce smooth resinous tile facing. Facings should be tested according to the prescribed procedures and should meet the requirements for resistance to crazing, cracking, or spalling, resistance to chemicals, adhesion, abrasion, surface-burning characteristics, color, tint, texture, and soiling and cleansability.
SCOPE
1.1 This specification covers prefaced concrete masonry units with the exposed-to-view-in-place surfaces covered at the point of manufacture with resin, resin and inert filler, or cement and inert filler to produce a smooth resinous tile facing. This specification does not address, and therefore is not applicable to, ground-face concrete masonry units that are manufactured by grinding a thin layer off the surface of a concrete masonry unit to expose aggregates within and polishing to produce a smooth, architectural finish.
1.2 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 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.
General Information
Relations
Buy Standard
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C744 – 09
Standard Specification for
1
Prefaced Concrete and Calcium Silicate Masonry Units
This standard is issued under the fixed designation C744; 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* D822 Practice for Filtered Open-Flame Carbon-Arc Expo-
sures of Paint and Related Coatings
1.1 This specification covers prefaced concrete masonry
D2244 Practice for Calculation of Color Tolerances and
units with the exposed-to-view-in-place surfaces covered at the
Color Differences from Instrumentally Measured Color
pointofmanufacturewithresin,resinandinertfiller,orcement
Coordinates
and inert filler to produce a smooth resinous tile facing. This
D2486 Test Methods for Scrub Resistance of Wall Paints
specification does not address, and therefore is not applicable
E84 Test Method for Surface Burning Characteristics of
to, ground-face concrete masonry units that are manufactured
Building Materials
by grinding a thin layer off the surface of a concrete masonry
unit to expose aggregates within and polishing to produce a
3. Terminology
smooth, architectural finish.
3.1 Terminology defined in Terminology C1232 shall apply
1.2 The text of this specification references notes and
for this specification.
footnotes which provide explanatory material. These notes and
footnotes (excluding those in tables and figures) shall not be
4. Materials
considered as requirements of the standard.
4.1 Concrete masonry units on which prefaced surfaces are
1.3 The values stated in inch-pound units are to be regarded
molded shall meet the requirements of:
as standard. The values given in parentheses are mathematical
4.1.1 Specification C55 for Concrete Building Brick.
conversions to SI units that are provided for information only
4.1.2 Specification C73 for Calcium Silicate Face Brick
and are not considered standard.
(Sand-Lime Brick).
4.1.3 Specification C90 for Loadbearing Concrete Masonry
2. Referenced Documents
2 Units.
2.1 ASTM Standards:
4.1.4 Specification C129 for Nonloadbearing Units.
C55 Specification for Concrete Building Brick
C73 Specification for Calcium Silicate Brick (Sand-Lime
NOTE 1—Thepurchaserofprefacedunitsshouldindicatetheapplicable
Brick) specificationandthetypeandgradeofunitrequired.Whereprefacedunits
are required for exterior use, the manufacturer should be consulted for
C90 Specification for Loadbearing Concrete Masonry Units
material suitable for this purpose.
C129 Specification for Nonloadbearing Concrete Masonry
Units
5. Facing Requirements
C140 Test Methods for Sampling and Testing Concrete
5.1 Resistance to Crazing, Cracking, or Spalling—There
Masonry Units and Related Units
shall be no crazing, cracking, or spalling of the facing material
C501 Test Method for Relative Resistance to Wear of
when the unit is tested in accordance with 7.2.
Unglazed Ceramic Tile by the Taber Abraser
5.2 Resistance to Chemicals—The condition of the surface
C1232 Terminology of Masonry
shall show no change after testing with each of the chemicals
listed in 7.3.
1
This specification is under the jurisdiction of ASTM Committee C15 on
5.3 Adhesion—When viewed without magnification, there
Manufactured Masonry Units and is the direct responsibility of Subcommittee
shall be no failure of the adhesion of the facing material to the
C15.03 on Concrete Masonry Units and Related Units.
concrete masonry unit at the time of failure of the entire
Current edition approved Dec. 1, 2009. Published December 2009. Originally
approved in 1973. Last previous edition approved in 2005 as C744 – 08. DOI: prefaced unit when tested in compression in accordance with
10.1520/C0744-09.
7.4.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.4 Abrasion—The wear index shall exceed 130 when
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
tested in accordance with 7.5.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
*ASummary 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 ----------------------
C744 – 09
5.5 Surface Burning Characteristics—When tested in ac- clean cloth.The condition of the test area shall show no change
cordance with 7.6, the surfaces of the prefaced units shall have after testing with each chemical for the specified time pre-
a flame spread classification not greater than 25 without scribed in Ta
...
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:C744–08 Designation: C744 – 09
Standard Specification for
1
Prefaced Concrete and Calcium Silicate Masonry Units
This standard is issued under the fixed designation C744; 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*
1.1This1.1 This specification covers prefaced concrete masonry units with the exposed-to-view-in-place surfaces covered at the
point of manufacture with resin, resin and inert filler, or cement and inert filler to produce a smooth resinous tile facing. This
specification does not address, and therefore is not applicable to, ground-face concrete masonry units that are manufactured by
grinding a thin layer off the surface of a concrete masonry unit to expose aggregates within and polishing to produce a smooth,
architectural finish.
1.2 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 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C55 Specification for Concrete Building Brick
C73 Specification for Calcium Silicate Brick (Sand-Lime Brick)
C90 Specification for Loadbearing Concrete Masonry Units
C129 Specification for Nonloadbearing Concrete Masonry Units
C140 Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
C501 Test Method for Relative Resistance to Wear of Unglazed Ceramic Tile by the Taber Abraser C1209Terminology of
Concrete Masonry
Units and Related
Units
C1232 Terminology of Masonry
D822 Practice for Filtered Open-Flame Carbon-Arc Exposures of Paint and Related Coatings
D2244 Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
D2486 Test Methods for Scrub Resistance of Wall Paints
E84 Test Method for Surface Burning Characteristics of Building Materials
3. Terminology
3.1Terminology defined in Terminology C1209 and
3.1 Terminology defined in Terminology C1232 shall apply for this specification.
4. Materials
4.1 Concrete masonry units on which prefaced surfaces are molded shall meet the requirements of:
4.1.1 Specification C55 for Concrete Building Brick.
4.1.2 Specification C73 for Calcium Silicate Face Brick (Sand-Lime Brick).
4.1.3 Specification C90 for Loadbearing Concrete Masonry Units.
4.1.4 Specification C129 for Nonloadbearing Units.
1
This specification is under the jurisdiction of ASTM Committee C15 on Manufactured Masonry Units and is the direct responsibility of Subcommittee C15.03 on
Concrete Masonry Units and Related Units.
Current edition approved Aug.Dec. 1, 2008.2009. Published September 2008.December 2009. Originally approved in 1973. Last previous edition approved in 2005 as
C744 – 058. DOI: 10.1520/C0744-089.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For AnnualBookofASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*ASummary 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 ----------------------
C744 – 09
NOTE 1—The purchaser of prefaced units should indicate the applicable specification and the type and grade of unit required. Where prefaced units
are required for exterior use, the manufacturer should be consulted for material suitable for this purpose.
5. Facing Requirements
5.1 Resistance to Crazing, Cracking, or Spalling—There shall be no crazing, cracking, or spalling of the facing material when
the unit is tested in accordance with 7.2.
5.2 Resistance to Chemicals—The condition of the surface shall show no change after testing with each of the chemicals listed
in 7.3.
5.3 Adhesion—When viewed without magnification, there shall be no failure of the adhesion of the facing material to the
concrete masonry unit at the time of failure of the entire
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.