PAVING ASPHALT PROPERTIES
AN INVESTIGATION OF CHANGES IN THE ASPHALT CONTAINED IN ASPHALTIC MIXES WAS UNDERTAKEN TO GAIN AN UNDERSTANDING OF THE FACTORS AFFECTING THE DURABILITY OF ASPHALT PAVEMENTS. PAVEMENTS WERE CONSTRUCTED TO DETERMINE PENETRATION-ABSOLUTE VISCOSITY RELATIONSHIPS FOR THE DIFFERENT ASPHALTS USED. SIX DIFFERENT ASPHALTS WERE USED, VARYING IN PENETRATION AND ABSOLUTE VISCOSITY. THREE PAVEMENTS WERE CONSTRUCTED BY USING THE SAME 6 ASPHALTS, BUT EACH WAS CONSTRUCTED WITH DIFFERENT AGGREGATE TYPES. INVESTIGATIONS WERE CONFINED TO THE WEARING COURSE. THE TEST PAVEMENTS WERE ASPHALTIC CONCRETE OVERLAYS ON PORTLAND CEMENT CONCRETE. FIELD DATA WERE ACCUMULATED DURING CONSTRUCTION AND PERIODICALLY AFTER CONSTRUCTION. PENETRATION, ABSOLUTE VISCOSITY, AND ASPHALTENE DETERMINATIONS WERE MADE. RESULTS FROM THESE PROJECTS INDICATE THAT A LOW-VISCOSITY ASPHALT (90 TO 100 PENETRATION AND 900 PLUS OR MINUS 200 POISE VISCOSITY) IS PERFORMING AS WELL AS OR BETTER THAN THE OTHER ASPHALTS. THIS IS BASED ON A RATING SYSTEM, DEVISED BY THE AUTHORS, RELATING PHYSICAL AND CHEMICAL CHANGES WITH AIR VOID CHANGES WITH TIME. /AUTHOR/
- Record URL:
-
Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309019621
-
Supplemental Notes:
- Sponsored by Committee on Characteristics of Bituminous Materials and presented at the 50th Annual Meeting. 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.
-
Authors:
- Gotolski, William H
- Smith, Richard W
- Roberts, James M
-
Conference:
- 50th Annual Meeting of the Highway Research Board
- Location: Washington District of Columbia, United States
- Date: 1971-1-18 to 1971-1-22
- Publication Date: 1971
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: pp 46-61
- Monograph Title: Symposium on viscosity grading of asphalts
-
Serial:
- Highway Research Record
- Issue Number: 350
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Air voids; Asphalt; Asphalt concrete; Asphalt pavements; Asphaltene; Bituminous mixtures; Chemical properties; Concrete hardening; Durability; Graphics; Hardness; Pendulum tests; Physical properties; Viscosity; Wearing course (Pavements)
- Uncontrolled Terms: Change; Graphical analysis; Relationships
- Old TRIS Terms: Air voids content
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 00211685
- Record Type: Publication
- ISBN: 0309019621
- Files: TRIS, TRB
- Created Date: Oct 3 1971 12:00AM