Percent Fractured Face Test
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A sample retained on the 4.75 mm (No. 4) sieve is collected and the number of particles with fractured faces is compared to the number of particles without fractured faces. A fractured face is defined as an "angular, rough, or broken surface of an aggregate particle created by crushing, by other artificial means, or by nature" (ASTM, 20001). In order for a face to be considered fractured it must constitute at least 25 percent of the maximum cross-sectional area of the rock particle.
Standard Test Methods
- ASTM D 5821: Determining the Percentage of Fractured Particles in Coarse Aggregate
Coarse aggregate angularity (fractured faces)
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Cite this page
APA
Pavement Interactive. (2026, November 1). Percent fractured face test. HeadLight. Retrieved [the date you read it], from https://pavementinteractive.org/reference-desk/testing/aggregate-tests/percent-fractured-face-test/
ASCE
Pavement Interactive. (2026). “Percent Fractured Face Test.” HeadLight, <https://pavementinteractive.org/reference-desk/testing/aggregate-tests/percent-fractured-face-test/> ([the date you read it]).
BibTeX
@misc{pavint-percent-fractured-face-test,
author = {{Pavement Interactive}},
title = {Percent Fractured Face Test},
year = {2026},
publisher = {HeadLight},
howpublished = {\url{https://pavementinteractive.org/reference-desk/testing/aggregate-tests/percent-fractured-face-test/}},
note = {Accessed [date]}
}Sources (1)
- American Society for Testing and Materials (ASTM) (2000). Annual Book of ASTM Standards, Section four: Construction. Vol. 4.03. American Society for Testing and Materials. West Conshohocken, PA. ↩