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Title:

QUALITATIVE ASSESSMENT OF THE SIOUX QUARTZITE IN ASPHALT HOT MIXES

Accession Number:

00472632

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/309041163

Abstract:

Quartzite is known to be a more expensive material than natural aggregate (natural gravel and sand) to use in asphalt hot mixes. Therefore many engineers are reluctant to use it in order to keep construction costs down, particularly during periods of difficult economic times. This point of view did no justice to quartzite, particularly when the engineering properties of quartzite are recognized by many professionals as being superior to natural aggregate. A study was conducted to determine the feasibility of using quartzite in hot mixes in lieu of natural aggregate in areas near the quartzite outcrops. Laboratory tests indicated that mixes made with quartzite yielded better air voids, flow, density, and voids in mineral aggregates (VMA). Field performances proved that quartzite surfaces possess higher Dynaflect values as well as higher skid resistance numbers. Economic analysis revealed that during a reasonable lifespan of a pavement, the total expenses incurred (initial investment, maintenance, etc.) are less for quartzite surfaces than for natural aggregate surfaces. At the break-even point between quartzite and natural aggregate, the difference in costs can be used to transport quartzite greater distances. Computer programs were developed to determine the distance quartzite can justifiably be used without adding any more expenses to the pavement.

Supplemental Notes:

Publication of this paper sponsored by Committee on Characteristics of Bituminous-Aggregate Combinations to Meet Surface Requirements. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

Monograph Accession #:

01418832

Authors:

SELIM, A A

Pagination:

pp 120-127

Publication Date:

1986

Serial:

Transportation Research Record

Issue Number: 1096
Publisher: Transportation Research Board
ISSN: 0361-1981

Conference:

65th Annual Meeting of the Transportation Research Board

Location: Washington District of Columbia, United States
Date: 1986-1-13 to 1986-1-16

ISBN:

309041163

Media Type:

Print

Features:

Figures (6) ; References (3) ; Tables (5)

Uncontrolled Terms:

Field performance

Subject Areas:

Economics; Finance; Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials; I36: Aggregates

Files:

TRIS, TRB

Created Date:

Aug 31 1987 12:00AM

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