ASTM C744-99

Standard Specification for Prefaced Concrete and Calcium Silicate Masonry Units

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.
1.2 The 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.

General Information

• Status: Historical
• Publication Date: 09-Jan-1999
• ICS: 91.100.15 - Mineral materials and products
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C15 - Masonry – Manufactured Masonry Units, Mortars and Grouts
• Drafting Committee: C15.03 - Concrete Masonry Units and Related Units

Relations

• Replaced By: ASTM C744-04 - Standard Specification for Prefaced Concrete and Calcium Silicate Masonry Units
• Effective Date: 01-Dec-2004
• Referred By: ASTM C1232-21a - Standard Terminology for Masonry
• Effective Date: 10-Jan-1999
• Referred By: ASTM C1803-20 - Standard Guide for Abrasion Resistance of Mortar Surfaces Using a Rotary Platform Abraser
• Effective Date: 10-Jan-1999
• Referred By: ASTM G195-22 - Standard Guide for Conducting Wear Tests Using a Rotary Platform Abraser
• Effective Date: 10-Jan-1999

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C 744 – 99
Standard Specification for
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 (e) 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 * E 84 Test Method for Surface Burning Characteristics of
Building Materials
1.1 This specification covers prefaced concrete masonry
units with the exposed-to-view-in-place surfaces covered at the
3. Terminology
pointofmanufacturewithresin,resinandinertfiller,orcement
3.1 Terminology defined in Terminology C 1209 and C
and inert filler to produce a smooth resinous tile facing.
1232 shall apply for this specification.
1.2 The text of this standard references notes and footnotes
which provide explanatory material. These notes and footnotes
4. Materials
(excluding those in tables and figures) shall not be considered
4.1 Concrete masonry units on which prefaced surfaces are
as requirements of the standard.
molded shall meet the requirements of:
2. Referenced Documents 4.1.1 Specification C 55 for Concrete Building Brick.
4.1.2 Specification C 73 for Calcium Silicate Face Brick
2.1 ASTM Standards:
(Sand-Lime Brick).
C 55 Specification for Concrete Building Brick
4.1.3 Specification C 90 for Loadbearing Concrete Masonry
C 73 Specification for Calcium Silicate Face Brick (Sand-
Units.
Lime Brick)
4.1.4 Specification C 129 for Nonloadbearing Units.
C 90 Specification for Loadbearing Concrete Masonry
Units
NOTE 1—Thepurchaserofprefacedunitsshouldindicatetheapplicable
C 129 Specification for Nonloadbearing Concrete Masonry specificationandthetypeandgradeofunitrequired.Whereprefacedunits
are required for exterior use, the manufacturer should be consulted for
Units
material suitable for this purpose.
C 140 Test Methods for Sampling and Testing Concrete
Masonry Units and Related Units
5. Facing Requirements
C 501 Test Method for Relative Resistance to Wear of
3 5.1 Resistance to Crazing, Cracking, or Spalling—There
Unglazed Ceramic Tile by the Taber Abraser
shall be no crazing, cracking, or spalling of the facing material
C 1209 Terminology of Concrete Masonry Units and Re-
2 when the unit is tested in accordance with 7.2.
lated Units
5.2 Resistance to Chemicals—The condition of the surface
C 1232 Terminology of Masonry
shall show no change after testing with each of the chemicals
D 822 Practice for Conducting Tests on Paint and Related
listed in 7.3.
Coatings and Materials Using Filtered Open-Flame
4 5.3 Adhesion—When viewed without magnification, there
Carbon-Arc Light and Water Exposure Apparatus
shall be no failure of the adhesion of the facing material to the
D 2244 Test Method for Calculation of Color Differences
4 concrete masonry unit at the time of failure of the entire
from Instrumentally Measured Color Coordinates
prefaced unit when tested in compression in accordance with
D 2486 Test Method for Scrub Resistance of Interior Latex
5 7.4.
Flat Wall Paints
5.4 Abrasion—The wear index shall exceed 130 when
tested in accordance with 7.5.
1 5.5 Surface Burning Characteristics—When tested in ac-
This specification is under the jurisdiction of ASTM Committee C-15 on
Manufactured Masonry Units and is the direct responsibility of Subcommittee cordance with 7.6, the surfaces of the prefaced units shall have
C15.03 on Concrete Masonry Units and Related Units.
a flame spread classification not greater than 25 without
Current edition approved Jan. 10, 1999. Published June 1999. Originally
evidence of continued progressive combustion and shall have a
published as C 744 – 73. Last previous edition C 744 – 98.
smoke density rating not greater than 50.
Annual Book of ASTM Standards, Vol 04.05.
Annual Book of ASTM Standards, Vol 15.02.
Annual Book of ASTM Standards, Vol 06.01.
5 6
Annual Book of ASTM Standards, Vol 06.02. Annual Book of ASTM Standards, Vol 04.07.
*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.
C 744
5.6 Color,Tint,orTexture—Color,tint,ortextureshallbeas 7.5 Abrasion—Determine the wear index in accordance
specified. When tested in accordance with 7.7 and then with Test Method C 501 using Taber Abraser Research Model
compared with an unexposed unit, there shall be no change in
503 with a Taber CS-17 abrasive wheel and a 1000-g weight
texture, and color differences shall not exceed 5.0 Delta units.
for 500 wear cycles.
5.7 SoilingandCleansability—Thereshallbenotmorethan
7.6 Surface Burning—Determine flame spread and smoke
a trace of the stain visible when tested in accordance with
ratings in accordance with Test Method E 84.
7.8.1.Spottingmediashallbecompletelyremovedwhentested
7.7 Color Change—Determine color difference using CIE
in accordance with 7.8.2 and 7.8.3.
L*, a*, b*, or CIELAB (1976) with two-degree observer,
5.8 Report—Test reports shall show the results of tests
illuminant C, and specular excluded in accordance with Test
required by 5.1 through 5.7.
Method D 2244. Take measurements before and after 500 h of
6. Dimensional Tolerances accelerated weathering using the single-arc apparatus in accor-
dance with Practice D 822. Use test panels not less than 3 in.
6.1 Face Dimension—The total variation from specified
(76.2 mm) wide by 6 in. (152.4 mm) long.Test panels need not
dimensions in the finished face dimensions of the units shall
be conditioned.
not exceed 6 ⁄16 in. (1.6 mm) from specified dimensions.
6.2 Distortion—The distortion of the plane and edges of the
7.8 Soiling and Cleansability:
face of individual units from the corresponding plane surface
7.8.1 Staining Media—Pour a stain consisting of 0.5 g of
and edges of the concrete masonry unit shall not exceed ⁄16 in.
oil-soluble dye (C.I. Solvent Orange 7, C.I. 12140), 1.0 g of
(1.6 mm).
lanolin, and 5.0 g of SAE 10 oil one at a time on an area
approximately ⁄2 in. (12.7 mm) i
...