Standard Specification for Chemical-Resistant Masonry Units

SCOPE
1.1 This specification covers solid, kiln fired brick and tile made from clay, shale, or mixtures thereof, suitable for indoor and outdoor use in masonry construction subjected to chemical environments.
1.2 The physical and chemical properties of brick and tile differ from supplier to supplier, mainly because their composition is determined by the source of raw materials. Regardless of the differences, brick and tile are considered to be of three types as follows:
1.2.1 Type I--For use where low absorption and high acid resistance are not major factors.
1.2.2 Type II--For use where lower absorption and higher acid resistance are required.
1.2.3 Type III--For use where minimum absorption and maximum acid resistance are required.
Note 1-Types I, II, and III may not differ significantly in thermal shock resistance. The suitability of a given brick, for a particular application should be determined at the time of purchase by agreement between the purchaser and the supplier.Note 2--Types I and III were formerly designated Type "H'' and "L'' respectively.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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ASTM C279-88(1995)e1 - Standard Specification for Chemical-Resistant Masonry Units
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NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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.
e1
Designation: C 279 – 88 (Reapproved 1995)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Chemical-Resistant Masonry Units
This standard is issued under the fixed designation C 279; 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.
e NOTE—Keywords were added editorially in June 1995.
1. Scope Structural Clay Tile
C 397 Practice for Use of Chemically Setting Chemical-
1.1 This specification covers solid, kiln fired brick and tile
Resistant Silicate and Silica Mortars
made from clay, shale, or mixtures thereof, suitable for indoor
C 723 Practice for Chemical-Resistant Resin Grouts for
and outdoor use in masonry construction subjected to chemical
Brick or Tile
environments.
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
1.2 The physical and chemical properties of brick and tile
poses
differ from supplier to supplier, mainly because their compo-
sition is determined by the source of raw materials. Regardless
3. Physical Properties
of the differences, brick and tile are considered to be of three
3.1 Strength—The brick and tile when tested in accordance
types as follows:
with Test Methods C 67 shall conform to the requirements for
1.2.1 Type I—For use where low absorption and high acid
modulus of rupture (flexural strength) for the type specified, as
resistance are not major factors.
prescribed in Table 1.
1.2.2 Type II—For use where lower absorption and higher
3.2 Water Absorption—The brick and tile when tested in
acid resistance are required.
accordance with Test Methods C 20 shall conform to the
1.2.3 Type III—For use where minimum absorption and
requirements for water absorption (based on the 2 h boil) for
maximum acid resistance are required.
the type specified, as prescribed in Table 1.
NOTE 1—Types I, II, and III may not differ significantly in thermal
3.3 Sizes—The sizes of the brick and tile shall be as
shock resistance. The suitability of a given brick, for a particular
specified by the purchaser. The length, width, and depth
application should be determined at the time of purchase by agreement
measurements of the brick or tile shall be within 63 % of the
between the purchaser and the supplier.
specified dimensions when tested in accordance with Test
NOTE 2—Types I and III were formerly designated Type “H’’ and “L’’
respectively. Methods C 67.
3.4 Warpage—The brick and tile when tested in accordance
1.3 The values stated in inch-pound units are to be regarded
with Test Methods C 67 shall conform to the requirements as
as the standard. The values given in parentheses are for
shown in Table 2.
information only.
1.4 This standard does not purport to address all of the
NOTE 3—Caution: The above tolerances may not be consistent with
safety concerns, if any, associated with its use. It is the the recommended mortar joint sizes contained in Practices C 397 and
C 723. If brick or tile with tighter tolerances than those described in 3.3 or
responsibility of the user of this standard to establish appro-
3.4 are required, the purchaser shall negotiate such requirements with the
priate safety and health practices and determine the applica-
manufacturer.
bility of regulatory limitations prior to use.
3.5 Surface Textures—Brick or tile surfaces should be
2. Referenced Documents
textured in order to promote better bonding. Texturing may be
2.1 ASTM Standards: accomplished by scoring, wire cutting, matting, or other means
C 20 Test Methods for Apparent Porosity, Water Absorp- consistent with a manufacturer’s process. If texturing is done,
tion, Apparent Specific Gravity, and Bulk Density of the protrusion or indentation shall not exceed ⁄8 in. (3 mm) in
Burned Refractory Brick and Shapes by Boiling Water depth.
C 67 Test Methods of Sampling and Testing Brick and
4. Significance and Use
4.1 The brick and tile covered herein are intended essen-
This specification is under the jurisdiction of ASTM Committee C-15 on
tially for use in chemical environments where resistance to
Manufactured Masonry Units and is the direct responsibility of Subcommittee
C15.09 on Chemical-Resistant Units.
Current edition approved June 13, 1988. Published August 1988. Originally
published as C 279 – 51. Last previous edition C 279 – 79. 3
Annual Book of ASTM Standards, Vol 04.05.
Annual Book of ASTM Standards, Vol 15.01. 4
Annual Book of ASTM Standards, Vol 14.02.
C 279
TABLE 1 Physical and Chemical Requirements for Brick and Tile
7.1.6 Desiccator.
Modulus of Rupture Water Absorption H SO Solubility 7.1.7 Erlenmeyer Flask, 750-mL, of heat-resistant and
2 4
(Brick or Tile Flat- Maximum % by Maximum %
chemically resistant glass.
wise) min. psi (MPa) 2 h Boiling Test Weight Loss
Designation
7.1.8 Water-Cooled Condenser.
Average of 5 Average of 5
Average of 5
Brick or Tile Brick or Tile 7.1.9 Hot Plate.
Brick or Tile
Low Individual High Individual
7.1.10 Fritted-Glass Funnel, fine porosity.
Type I 1250 (8.6) 1000 (6.9) 6.0 7.0 20
7.1.11 Suction Pump.
Type II 1250 (8.6) 1000 (6.9) 4.0 5.0 12
Type III 1250 (8.6) 1000 (6.9) 1.0 1
...

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