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Title:

FLOW RATE AS AN INDEX OF SHAPE TEXTURE OF SANDS

Accession Number:

00600671

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309050162

Abstract:

The influence of particle shape and surface texture (roughness) on physical properties of soils, portland cement concretes, and asphalt cement concretes has been of interest to highway engineers for many years. These particle characteristics have shown effects on the compactibility, strength, and durability of these paving mixtures. However, the topic of this paper is concerned principally with those effects on properties related to compacted mixtures of asphaltic concrete. The classification of particle shape and surface texture for use in determining specific effects on the properties of asphaltic concrete has been based on visual examination, measurement of flow rate, or measurement of volume of voids. A method is presented for determining a shape-texture index (STI) by measuring a flow rate of the -No. 8 sieve size portion of fine aggregate. It is suggested that this simple, fast procedure could be used for field (construction) control of the -No. 8 material in a hot-bin. Data are presented to show STI value effects on (a) the compactibility of aggregate densified by three methods, (b) voids in the mineral aggregate of asphaltic concrete, (c) Marshall and Hveem stability values of asphaltic concretes, and (d) creep modulus of asphaltic concrete.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1259, Chip Seals, Friction Courses, and Asphalt Pavement Rutting 1990.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 #:

01410821

Authors:

Jimenez, R A

Pagination:

p. 120-132

Publication Date:

1990

Serial:

Transportation Research Record

Issue Number: 1259
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309050162

Features:

Appendices (1) ; Figures (10) ; Photos (1) ; References (18) ; Tables (8)

Uncontrolled Terms:

Flow rate

Old TRIS Terms:

Subject Areas:

Construction; Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials; I36: Aggregates

Files:

TRIS, TRB, ATRI

Created Date:

Oct 31 1990 12:00AM

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