TEST FOR EFFICIENCY OF MIXING OF RECYCLED ASPHALT PAVING MIXTURES
The increasing costs of construction materials, along with environmental conditions, have given great impetus to current interests in recycling. In recent years, reuse or recycling of existing pavement materials has emerged as a workable rehabilitation and maintenance alternative because it offers several advantages over the use of conventional materials and techniques. Although the equipment and technology of recycling have been developed, there still is no standardized or widely accepted method for testing recycled mixtures. The practice of using a small amount of recycling agent is coupled with the problem of quality control. There is no suitable method of detecting how well the recycling agent mixes with the aged pavement materials. A study is described whose primary objective was to develop a test method that could be conducted in the field with a minimum of equipment and training. As a result, the dye chemistry technique was found to be the most practical method of measuring the extent of mixing during a recycling operation. Ten field projects involving various plant types were conducted to demonstrate the application of such a technique to full-scale construction conditions. The overall mixing efficiency of a specific operation can be evaluated by statistically analyzing the resulting dye distributions. Consequently, the mixing process or plant design can be optimized by obtaining such information. (Author)
- Record URL:
- Record URL:
-
Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309035546
-
Supplemental Notes:
- Publication of this paper sponsored by Committee on Characteristics of Bituminous Paving Mixtures to Meet Structural 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
-
Authors:
- Lee, Teh-Chang
- Terrel, Ronald L
- Mahoney, Joe P
- Publication Date: 1983
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 51-60
- Monograph Title: Asphalt materials, mixtures, construction, moisture effects and sulfur
-
Serial:
- Transportation Research Record
- Issue Number: 911
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Asphalt mixtures; Economic efficiency; Mixing; Quality control; Recycled materials
- Uncontrolled Terms: Efficiency
- Subject Areas: Economics; Highways; Materials; I31: Bituminous Binders and Materials;
Filing Info
- Accession Number: 00390790
- Record Type: Publication
- ISBN: 0309035546
- Files: TRIS, TRB
- Created Date: Dec 30 1984 12:00AM