TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

VOIDS IN ONE-SIZE SURFACE TREATMENT AGGREGATES AND DISCUSSION

Accession Number:

00210278

Record Type:

Component

Abstract:

A FUNDAMENTAL CONCEPT USED IN THE DESIGN OF SURFACE TREATMENTS IS THAT THE QUANTITY OF BITUMINOUS MATERIAL NEEDED IS DETERMINED AS THE AMOUNT REQUIRED TO FILL THE VOIDS BETWEEN THE AGGREGATES TO AN OPTIMUM DEPTH. THIS STUDY WAS PERFORMED TO DETERMINE THE INFLUENCE OF AGGREGATE CHARACTERISTICS ON THE VOID SPACE IN A ONE-SIZE SURFACE TREATMENT AGGREGATE. THE LABORATOTY INVESTIGATION WAS CONDUCTED BY SPREADING THE AGGREGATE ONE LAYER THICK IN A FLAT BOTTOM PAN AND POURING KNOWN VOLUMES OF WATER INTO THE CONTAINER BETWEEN THE AGGREGATE. BY MEASURING THE DEPTH OF THE WATER AND THE VOLUME OF THE VOIDS, THE PERCENT VOIDS COULD BE COMPUTED. THE VOLUME OF THE VOIDS DID NOT VARY IN DIRECT PROPORTION WITH THE DEPTH WITHIN THE AGGREGATE, AS IS ASSUMED IN CURRENT DESIGN METHODS. IN GENERAL, THE MORE ROUNDED AGGREGATES, SUCH AS THE GRAVELS, HAD A SMALLER VOLUME OF VOIDS THAN THE MORE ANGULAR CRUSHED STONE. IN SOME INSTANCES, THE DIFFERENCE IN THE PERCENT VOIDS PRODUCED BY A CHANGE IN SHAPE OF THE AGGREGATE WAS QUITE LARGER. REGARDLESS OF THE SHAPE OF THE AGGREGATE, THE SMALLER AGGREGATES HAD GREATER PERCENT VOIDS THAN THE LARGER AGGREGATES. THE AGGREGATE PARTICLES, WHEN PLACED WITH THEIR LEAST DIMENSION IN A VERTICAL DIRECTION, HAD LESS VOIDS THAN WHEN IN RANDOM ARRANGEMENT. /AUTHOR/

Supplemental Notes:

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 #:

01410060

Authors:

Saner, John L
Herrin, Moreland

Discussers:

Davis, Richard L; Saner, John L; Herrin, Moreland

Pagination:

pp 60-77

Publication Date:

1965

Serial:

Highway Research Record

Issue Number: 104
Publisher: Highway Research Board

Media Type:

Digital/other

Features:

Figures (16) ; References (6) ; Tables (3)

Uncontrolled Terms:

Aggregate shape

Old TRIS Terms:

Subject Areas:

Design; Geotechnology; Highways; Materials

Files:

TRIS, TRB

Created Date:

Oct 7 1994 12:00AM

More Articles from this Serial Issue: