ASTM D448-12

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: D448 − 08 D448 − 12
Standard Classification for
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Sizes of Aggregate for Road and Bridge Construction
This standard is issued under the fixed designation D448; 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
1.1 This classification defines aggregate size number designations and standard size ranges for mechanical sieve analyses of
coarse aggregate and screenings for use in the construction and maintenance of various types of highways and bridges.
1.2 Units—The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information
only.standard. No other units of measurement are included in this standard.
NOTE 1—Sieve size is identified by its standard designation in Specification E11. The alternative designation given in parentheses is for information
only and does not represent a different standard sieve size.
1.3 The text of this classification 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 classification.
2. Referenced Documents
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2.1 ASTM Standards:
C136 Test Method for Sieve Analysis of Fine and Coarse Aggregates
D8 Terminology Relating to Materials for Roads and Pavements
D75 Practice for Sampling Aggregates
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
3. Terminology
3.1 Definition of terms, see Terminology D8.
4. Significance and Use
4.1 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.
5. Manufacture
5.1 The standard sizes of aggregate described in this classification are manufactured by means of any suitable process used to
separate raw material into the desired size ranges. Production of standard sizes by blending two or more different components is
permitted.
6. Standard Sizes
6.1 Standard aggregate sizes shall conform to the requirements prescribed in Table 1 for the size number specified.
Conformance shall be determined by means of laboratory sieves having square openings and conforming to Specification E11.
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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 Aggregate
Specifications.
Current edition approved July 1, 2008Dec. 1, 2012. Published July 2008December 2012. Originally approved in 1937. Last previous edition approved in 20032008 as
D448 – 03a.D448 – 08. DOI: 10.1520/D0448-08.10.1520/D0448-12.
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volume information, refer to the standard’s Document Summary page on the ASTM website.
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D448 − 12
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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
...