ASTM C744-08
(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.
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Designation: C744 – 08
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* C501 Test Method for Relative Resistance to Wear of
Unglazed Ceramic Tile by the Taber Abraser
1.1 This specification covers prefaced concrete masonry
C1209 Terminology of Concrete Masonry Units and Re-
units with the exposed-to-view-in-place surfaces covered at the
3
lated Units
pointofmanufacturewithresin,resinandinertfiller,orcement
C1232 Terminology of Masonry
and inert filler to produce a smooth resinous tile facing. This
D822 Practice for Filtered Open-Flame Carbon-Arc Expo-
specification does not address, and therefore is not applicable
sures of Paint and Related Coatings
to, ground-face concrete masonry units that are manufactured
D2244 Practice for Calculation of Color Tolerances and
by grinding a thin layer off the surface of a concrete masonry
Color Differences from Instrumentally Measured Color
unit to expose aggregates within and polishing to produce a
Coordinates
smooth, architectural finish.
D2486 Test Methods for Scrub Resistance of Wall Paints
1.2 The text of this specification references notes and
E84 Test Method for Surface Burning Characteristics of
footnotes which provide explanatory material. These notes and
Building Materials
footnotes (excluding those in tables and figures) shall not be
considered as requirements of the standard.
3. Terminology
1.3 The values stated in inch-pound units are to be regarded
3.1 Terminology defined in Terminology C1209 and C1232
as standard. The values given in parentheses are mathematical
shall apply for this specification.
conversions to SI units that are provided for information only
and are not considered standard.
4. Materials
4.1 Concrete masonry units on which prefaced surfaces are
2. Referenced Documents
2 molded shall meet the requirements of:
2.1 ASTM Standards:
4.1.1 Specification C55 for Concrete Building Brick.
C55 Specification for Concrete Building Brick
4.1.2 Specification C73 for Calcium Silicate Face Brick
C73 Specification for Calcium Silicate Brick (Sand-Lime
(Sand-Lime Brick).
Brick)
4.1.3 Specification C90 for Loadbearing Concrete Masonry
C90 Specification for Loadbearing Concrete Masonry Units
Units.
C129 Specification for Nonloadbearing Concrete Masonry
4.1.4 Specification C129 for Nonloadbearing Units.
Units
C140 Test Methods for Sampling and Testing Concrete
NOTE 1—Thepurchaserofprefacedunitsshouldindicatetheapplicable
Masonry Units and Related Units specificationandthetypeandgradeofunitrequired.Whereprefacedunits
are required for exterior use, the manufacturer should be consulted for
material suitable for this purpose.
1
This specification is under the jurisdiction of ASTM Committee C15 on
5. Facing Requirements
Manufactured Masonry Units and is the direct responsibility of Subcommittee
C15.03 on Concrete Masonry Units and Related Units.
5.1 Resistance to Crazing, Cracking, or Spalling—There
Current edition approved Aug. 1, 2008. Published September 2008. Originally
shall be no crazing, cracking, or spalling of the facing material
approved in 1973. Last previous edition approved in 2005 as C744 – 05. DOI:
10.1520/C0744-08. when the unit is tested in accordance with 7.2.
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
3
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.
*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 – 08
TABLE 1 Resistance to Chemicals
5.2 Resistance to Chemicals—The condition of the surface
shall show no change after testing with each of the chemicals Duration of
Chemical
Test, h
listed in 7.3.
Acetic acid (CH COOH) (5 %) 24
5.3 Adhesion—When viewed without magnification, there 3
Hydrochloric acid (HCl) (10 %) 3
shall be no failure of the adhesion of the facing material to the
Potassium hydroxide (KOH) (10 %) 3
concrete masonry unit at the time of failure of the entire
Trisodium phosphate (Na PO )(5%) 24
3 4
Hydrogen peroxide (H O )(3%) 24
prefaced unit when tested in compression in accord
...
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:C744–05 Designation: C 744 – 08
Standard Specification for
1
Prefaced Concrete and Calcium Silicate Masonry Units
This standard is issued under the fixed designation C 744; 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.
Note— Sections 5.7 and 7.1 were corrected and the year date changed onApril 14, 2005.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1This 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.
1.2The text of this standard 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.
1.1 This specification covers prefaced concrete masonry units with the exposed-to-view-in-place surfaces covered at the point
ofmanufacturewithresin,resinandinertfiller,orcementandinertfillertoproduceasmoothresinoustilefacing.Thisspecification
does not address, and therefore is not applicable to, ground-face concrete masonry units that are manufactured by grinding a thin
layeroffthesurfaceofaconcretemasonryunittoexposeaggregateswithinandpolishingtoproduceasmooth,architecturalfinish.
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:
C 55 Specification for Concrete Building Brick
C 73 Specification for Calcium Silicate Face Brick (Sand-Lime Brick)
C 90 Specification for Loadbearing Concrete Masonry Units
C 129 Specification for Nonloadbearing Concrete Masonry Units
C 140 Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
C 501 Test Method for Relative Resistance to Wear of Unglazed Ceramic Tile by the Taber Abraser
C 1209 Terminology of Concrete Masonry Units and Related Units
C 1232 Terminology of Masonry
D 822Practice for Conducting Tests on Paint and Related Coatings and Materials Using Filtered Open-Flame Carbon-Arc Light
and Water Exposure Apparatus Practice for Filtered Open-Flame Carbon-Arc Exposures of Paint and Related Coatings
D 2244Test Method Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color
Coordinates
D 2486Test Method for Scrub Resistance of Interior Latex Flat Wall Paints Test Methods for Scrub Resistance of Wall Paints
E 84 Test Method for Surface Burning Characteristics of Building Materials
3. Terminology
3.1 Terminology defined in Terminology C 1209 and C 1232 shall apply for this specification.
4. Materials
4.1 Concrete masonry units on which prefaced surfaces are molded shall meet the requirements of:
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 April 14, 2005. Published April 2005. Originally approved in 1973. Last previous edition approved in 2004 as C744–04.
Current edition approved Aug. 1, 2008. Published September 2008. Originally approved in 1973. Last previous edition approved in 2005 as C 744 – 05.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM 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, PA19428-2959, United States.
1
---------------------- Page: 1 ----------------------
C744–08
4.1.1 Specification C 55 for Concrete Building Brick.
4.1.2 Specification C 73 for Calcium Silicate Face Brick (San
...
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:C744–05 Designation: C 744 – 08
Standard Specification for
1
Prefaced Concrete and Calcium Silicate Masonry Units
This standard is issued under the fixed designation C 744; 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.
Note— Sections 5.7 and 7.1 were corrected and the year date changed onApril 14, 2005.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1This 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.
1.2The text of this standard 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.
1.1 This specification covers prefaced concrete masonry units with the exposed-to-view-in-place surfaces covered at the point
ofmanufacturewithresin,resinandinertfiller,orcementandinertfillertoproduceasmoothresinoustilefacing.Thisspecification
does not address, and therefore is not applicable to, ground-face concrete masonry units that are manufactured by grinding a thin
layeroffthesurfaceofaconcretemasonryunittoexposeaggregateswithinandpolishingtoproduceasmooth,architecturalfinish.
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 Face Brick (Sand-Lime Brick)
C90 Specification for Loadbearing Concrete Masonry Units
C 129 Specification for Nonloadbearing Concrete Masonry Units
C 140 Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
C 501 Test Method for Relative Resistance to Wear of Unglazed Ceramic Tile by the Taber Abraser
C 1209 Terminology of Concrete Masonry Units and Related Units
C 1232 Terminology of Masonry
D 822 PracticeforConductingTestsonPaintandRelatedCoatingsandMaterialsUsingFilteredOpen-FlameCarbon-ArcLight
and Water Exposure Apparatus Practice for Filtered Open-Flame Carbon-Arc Exposures of Paint and Related Coatings
D 2244 Test Method Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color
Coordinates
D 2486 Test Method for Scrub Resistance of Interior Latex Flat Wall Paints Test Methods for Scrub Resistance of Wall Paints
E84 Test Method for Surface Burning Characteristics of Building Materials
3. Terminology
3.1 Terminology defined in Terminology C 1209 and C 1232 shall apply for this specification.
4. Materials
4.1 Concrete masonry units on which prefaced surfaces are molded shall meet the requirements of:
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 April 14, 2005. Published April 2005. Originally approved in 1973. Last previous edition approved in 2004 as C744–04.
Current edition approved Aug. 1, 2008. Published September 2008. Originally approved in 1973. Last previous edition approved in 2005 as C 744 – 05.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM 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, PA19428-2959, United States.
1
---------------------- Page: 1 ----------------------
C744–08
4.1.1 Specification C 55 for Concrete Building Brick.
4.1.2 Specification C 73 for Calcium Silicate Face Brick (Sand-Lime Brick).
4
...
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