ASTM D448−12 Standard Classification for Sizes of Aggregate for Road and Bridge Construction
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ASTM D448−12 Standard Classification for Sizes of Aggregate for Road and Bridge Construction
ASTM D448−12 Standard Classification for Sizes of Aggregate for Road and Bridge Construction
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 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.
ASTM D448−12 Standard Classification for Sizes of Aggregate for Road and Bridge Construction
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.
ASTM D448−12 Standard Classification for Sizes of Aggregate for Road and Bridge Construction
ASTM D448−12 Standard Classification for Sizes of Aggregate for Road and Bridge Construction
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 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.
ASTM D448−12 Standard Classification for Sizes of Aggregate for Road and Bridge Construction
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.
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