Standard Classification for Sizes of Aggregate for Road and Bridge Construction

SIGNIFICANCE AND USE
Some contract documents specify certain aggregate sizes for specific uses or may suggest one or more of these sizes as appropriate for the preparation of various end-product mixtures. In some cases, closer limits on variability of the aggregate grading are required.
SCOPE
1.1 This classification defines aggregate size designations and ranges in mechanical analyses for standard sizes of coarse aggregate and screenings for use in the construction and maintenance of various types of highways and bridges.
1.2 With regard to sieve sizes and the size of aggregate as determined by the use of testing sieves, the values in inch-pound units are shown for the convenience of the user; however, the standard sieve designation shown in parentheses is the standard value as stated in Specification E 11.
1.3 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.

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Publication Date
30-Nov-2003
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ASTM D448-03a - Standard Classification for Sizes of Aggregate for Road and Bridge Construction
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation: D 448 – 03a
Standard Classification for
1
Sizes of Aggregate for Road and Bridge Construction
This standard is issued under the fixed designation D 448; 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 E11 Specification for Wire Cloth and Sieves for Testing
Purposes
1.1 This classification defines aggregate size designations
and ranges in mechanical analyses for standard sizes of coarse
3. Significance and Use
aggregate and screenings for use in the construction and
3.1 Some contract documents specify certain aggregate
maintenance of various types of highways and bridges.
sizes for specific uses or may suggest one or more of these
1.2 With regard to sieve sizes and the size of aggregate as
sizes as appropriate for the preparation of various end-product
determined by the use of testing sieves, the values in inch-
mixtures. In some cases, closer limits on variability of the
pound units are shown for the convenience of the user;
aggregate grading are required.
however, the standard sieve designation shown in parentheses
is the standard value as stated in SpecificationE11.
4. Manufacture
1.3 The text of this standard references notes and footnotes
4.1 The standard sizes of aggregate described in this clas-
which provide explanatory material. These notes and footnotes
sification are manufactured by means of any suitable process
(excluding those in tables and figures) shall not be considered
used to separate raw material into the desired size ranges.
as requirements of the standard.
Production of standard sizes by blending two or more different
components is permitted.
2. Referenced Documents
2
2.1 ASTM Standards:
5. Standard Sizes
C 136 Test Method for Sieve Analysis of Fine and Coarse
5.1 Standard sizes of coarse aggregate shall comply with the
Aggregates
sizes given in Table 1. All sizes shall be determined by means
D75 Practice for Sampling Aggregates
of laboratory sieves having square openings and conforming to
SpecificationE11.
1
This classification is under the jurisdiction of ASTM Committee D04 on Road
and Paving Materials and is the direct responsibility of Subcommittee D04.50 on
6. Basis of Classification
Aggregate Specifications.
6.1 Classification is based upon the size number and size
Current edition approved Dec. 1, 2003. Published December 2003. Originally
approved in 1937. Last previous edition approved in 2003 as D 448 – 03. ranges shown in Table 1 with the aggregate sampled in
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
accordance with PracticeD75 and tested for grading by Test
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Method C 136.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D 448 – 03a
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TABLE 1 Standard Sizes of Processed Aggregate
Amounts Finer than Each Laboratory Sieve (Square Openings), mass percent
Nominal Size,
90- 300- 150-
Size
100- 75- 4.75- 2.36- 1.18-
Square
mm 63-mm 50-mm 37.5-mm 25.0-mm 19.0-mm 12.5-mm 9.5-mm µm µm
Number
mm mm mm mm mm
Openings
1 1 1 3 1 3
(3 ⁄2-in.) (2 ⁄2-in.) (2-in.) (1 ⁄2-in.) (1-in.) ( ⁄4-in.) ( ⁄2-in.) ( ⁄8-in.) (No. (No.
(4-in.) (3-in.) (No. 4) (No. 8) (No. 16)
50) 100)
1 90 to 37.5-mm 100 90 to 100 . 25 to 60 . 0 to 15 . 0 to 5 . . . . . . .
1 1
(3 ⁄2 to 1 ⁄2-in.)
2 63 to 37.5-mm . . 100 90 to 100 35 to 70 0 to 15 . 0 to 5 . . . . . . .
1 1
(2 ⁄2 to 1 ⁄2-in.)
24 63 to 19.0-mm . . 100 90 to 100 . 25 to 60 . 0 to 10 0 to 5 . . . . . .
1 3
(2 ⁄2 to ⁄4-in.)
3 50 to 25.0-mm . . . 100 90 to 100 35 to 70 0 to 15 . 0 to 5 . . . . . .
(2 to 1-in.)
357 50 to 4.75-mm . . . 100 95 to 100 . 35 to 70 . 10 to 30 . 0 to 5 . . . .
(2-in. to No. 4)
4 37.5 to 19.0-mm . . . . 100 90 to 100 20 to 55 0 to 15 . 0 to 5 . . . . .
1 3
(1 ⁄2 to ⁄4-in.)
467 37.5 to 4.75-mm . . . . 100 95 to 100 . 35 to 70 . 10 to 30 0 to 5 . . . .
1
(1 ⁄2-in. to No. 4)
5 25.0 to 12.5-mm. . . . . . 100 90 to 100 20 to 55 0 to 10 0 to 5 . . . . .
1
(1 to ⁄2-in.)
56 25.0 to 9.5-mm . . . . . 100 90 to 100 40 to 85 10 to 40 0 to 15 0 to 5 . . . .
3
(1 to ⁄8-in.)
57 25.0 to 4.75-mm . . . . . 100 95 to 100 . 25 to 60 . 0 to 10 0 to 5
...

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