macadam aggregate

macadam aggregate

A product manufactured by crushing stone, slag, or gravel and then screening it to a uniformly coarse size; when compacted, void spaces are relatively large.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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As an example, the application of Cooper's formula with D=14mm, F=4%, and n = 0.45 is presented in Figure 2, where it is very comparable to macadam aggregate grading in the British Standard (BS) 4987 in the UK [16].