Asphalt mix design: Discussion on the bulk specific gravity procedure influence on the results obtained from empirical, volumetric, and performance-based methods
The purpose of this paper is to shed light on the impact of laboratory procedures for air void content determination on the design and mechanical performance of an asphalt mixture. A dense-graded AC20 and gap-graded SMA12.5 mixtures were designed using empirical and volumetric design methods. Volumetric properties are determined based on several bulk gravity procedures: dry, SSD (saturated surface dry), paraffin coated, vacuum-sealed and dimensions. Relationships between the mixtures designed with bulk specific gravity procedures and their performance made it possible to analyze the impact of these procedures on the properties and performance of the mixtures. Global performance variations were relevant, although the differences were moderate considering the common procedures (less than 10%). Impact on a determined performance property can be considerable, with variations up to 70%. For specific applications, this can have a significant effect on the overall in-service performance.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/09500618
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Supplemental Notes:
- © 2022 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
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Authors:
- Gardete, Dinis
- Picado-Santos, Luís
- Capitão, Silvino
- Luzia, Rosa
- Publication Date: 2022-8-1
Language
- English
Media Info
- Media Type: Web
- Features: Figures; Illustrations; References; Tables;
- Pagination: 127870
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Serial:
- Construction and Building Materials
- Volume: 342
- Issue Number: 0
- Publisher: Elsevier
- ISSN: 0950-0618
- Serial URL: http://www.sciencedirect.com/science/journal/09500618?sdc=1
Subject/Index Terms
- TRT Terms: Air voids; Asphalt mixtures; Mix design; Pavement performance; Specific gravity
- Subject Areas: Design; Highways; Materials; Pavements;
Filing Info
- Accession Number: 01849958
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 27 2022 5:16PM