ASTM C144-04
(Specification)Standard Specification for Aggregate for Masonry Mortar
Standard Specification for Aggregate for Masonry Mortar
ABSTRACT
This specification covers aggregate for use in masonry mortar. Aggregate for use in masonry mortar shall consist of natural sand or manufactured sand. Manufactured sand is the product obtained by crushing stone, gravel, or air-cooled iron blast-furnace slag specially processed to ensure suitable gradation. Aggregate for use in masonry mortar shall be graded within the limits prescribed. The amount of deleterious substances in aggregate for masonry mortar, each determined on independent samples complying with the grading requirements. Except as herein provided, aggregate subjected to five cycles of the soundness test shall show a loss, weighted in accordance with the grading of a sample complying with the limitations set forth. A density test shall be performed. The air content of mortars shall be calculated.
SCOPE
1.1 This specification covers aggregate for use in masonry mortar.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 The following precautionary caveat pertains only to the test methods portion, Section 7, of this standard. This standard does not purport to address all of the safety problems, 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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American Association State Highway and Transportation Officials Standard
Designation: C144 – 04 AASHTO No.: M45-70 (1974)
Standard Specification for
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Aggregate for Masonry Mortar
This standard is issued under the fixed designation C144; 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 C142 Test Method for Clay Lumps and Friable Particles in
Aggregates
1.1 This specification covers aggregate for use in masonry
C270 Specification for Mortar for Unit Masonry
mortar.
C404 Specification for Aggregates for Masonry Grout
1.2 The values stated in SI units are to be regarded as the
D75 Practice for Sampling Aggregates
standard. The values given in parentheses are for information
only.
3. Materials and Manufacture
1.3 The following precautionary caveat pertains only to the
3.1 Aggregate for use in masonry mortar shall consist of
test methods portion, Section 7, of this standard. This standard
natural sand or manufactured sand. Manufactured sand is the
does not purport to address all of the safety problems, if any,
product obtained by crushing stone, gravel, or air-cooled iron
associated with its use. It is the responsibility of the user of this
blast-furnace slag specially processed to ensure suitable gra-
standard to establish appropriate safety and health practices
dation.
and determine the applicability of regulatory limitations prior
to use.
NOTE 1—Care should be taken to ensure a suitable particle shape, since
excessivequantitiesofflatandelongatedparticleshavehistoricallycaused
2. Referenced Documents
problems with workability.
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2.1 ASTM Standards:
4. Grading
C40 Test Method for Organic Impurities in FineAggregates
4.1 Aggregate for use in masonry mortar shall be graded
for Concrete
within the following limits, depending upon whether natural
C87 Test Method for Effect of Organic Impurities in Fine
sand or manufactured sand is to be used:
Aggregate on Strength of Mortar
Percent Passing
C88 Test Method for Soundness of Aggregates by Use of
Sieve Size Natural Sand Manufactured
Sodium Sulfate or Magnesium Sulfate
Sand
C117 TestMethodforMaterialsFinerthan75-µm(No.200)
4.75-mm (No. 4) 100 100
2.36-mm (No. 8) 95 to 100 95 to 100
Sieve in Mineral Aggregates by Washing
1.18-mm (No. 16) 70 to 100 70 to 100
C123 Test Method for Lightweight Particles in Aggregate
600-µm (No. 30) 40 to 75 40 to 75
C128 Test Method for Density, Relative Density (Specific
300-µm (No. 50) 10 to 35 20 to 40
150-µm (No. 100) 2 to 15 10 to 25
Gravity), and Absorption of Fine Aggregate
75-µm (No. 200) 0 to 5 0 to 10
C136 Test Method for Sieve Analysis of Fine and Coarse
Aggregates 4.2 The aggregate shall not have more than 50 % retained
between any two consecutive sieves of those listed in 4.1 nor
more than 25 % between 300-µm (No. 50) and the 150-µm
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(No. 100) sieve.
This specification is under the jurisdiction of ASTM Committee C12 on
Mortars for Unit Masonry and is the direct responsibility of Subcommittee C12.04
4.3 If the fineness modulus varies by more than 0.20 from
on Specifications for Aggregates for Mortar.
the value assumed in selecting proportions for the mortar, the
Current edition approved Dec. 1, 2004. Published January 2005. Originally
aggregate shall be rejected unless suitable adjustments are
approved in 1939. Last previous edition approved in 2003 as C144 – 03. DOI:
10.1520/C0144-04. made in proportions to compensate for the change in grading.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
NOTE 2—For heavy construction employing joints thicker than 12.5
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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mm ( ⁄2 in.), a coarser aggregate may be desirable; for such work a fine
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. aggregate conforming to Specification C404 is satisfactory.
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C144 – 04
4.4 When an aggregate fails the gradation limits specified in accordance with the grading of a sample complying with the
4.1 and 4.2, its use is permitted provided the mortar can be limitations set forth in Section 4, not greater than 10 % when
prepared to comply with the aggregate ratio, water retention, sodium sulfate is used or 15 % when magnesium sulfate is
air content, and compressive strength requirements of the used.
property specifications of Specification C270. 6.2 Aggregate
...
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