Effect Of Flat And Elongated Coarse Aggregate On Characteristics Of Gyratory Compacted Samples

Vavrik, William R.; Fries, Randy J.; Carpenter, Samuel H.; Aho, Brian D.

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https://hdl.handle.net/2142/46351 Copy

Description

Title

Effect Of Flat And Elongated Coarse Aggregate On Characteristics Of Gyratory Compacted Samples

Author(s)

• Vavrik, William R.
• Fries, Randy J.
• Carpenter, Samuel H.
• Aho, Brian D.

Issue Date

2000-03

Keyword(s)

Flat and Elongated Ratio (F&E), asphalt mixtures, Superpave Gyratory Compactor, air voids, gradation, aggregates

Abstract

This report presents findings on the effect of flat and elongated coarse aggregate particles on the volumetrics of Superpave Gyratory Compactor (SGC) prepared asphalt mixtures. Select aggregate sources were sampled to provide aggregate with varying levels of flat and elongated particles. The particles were hand separated and classified according to the flat and elongated ratio. Mixtures with specific gradations were assembled using the gravel and dolomite aggregates with controlled percentages of 3 to 1 and 5 to 1 particle shapes. Changes in the gradations of the compacted mixtures were noted and related to initial particle shapes and amounts and the aggregate source. No significant impact on mixture volumetrics could be assigned to the presence of flat and elongated particles.

Series/Report Name or Number

FHWA-IL-UI-276

ISSN

0197-9191

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/46351

Sponsor(s)/Grant Number(s)

Illinois Department of Transportation IHR-R22

Copyright and License Information

No restrictions. This document is available to the public through the National Technical Information Service, Springfield, Virginia 22161

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