Effects of Aggregate Top Size on Bituminous Concrete
Publication: Journal of Materials in Civil Engineering
Volume 5, Issue 4
Abstract
An experimental program consisting of resilient modulus and creep‐rebound testing was conducted to determine the effects of aggregate top size on the stiffness and resistance to permanent deformation of bituminous concrete mixtures. Three aggregates (two pit‐run alluvial deposits and one crushed limestone) were investigated at three top sizes (19.1 mm, 25.4 mm, and 31.8 mm). Stiffness and resistance to permanent deformation were found to decrease with increasing top size when alluvial aggregates were used and to increase when crushed limestone was used. This is attributed to the percentage of fractured faces that occur near the top size of the aggregate's gradation. For the alluvial aggregates, the percentage of fractured faces decreased with increasing aggregate top size. For the crushed limestone, the percentage of fractured faces was essentially 100% for all top sizes studied.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 5 • Issue 4 • November 1993
Pages: 531 - 544
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Feb 14, 1992
Published online: Nov 1, 1993
Published in print: Nov 1993
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