ANALYTICAL FORMULAS FOR FILM THICKNESS IN COMPACTED ASPHALT MIXTURE
Recently, several researchers have proposed asphalt film thickness as a criterion for ensuring the durability of asphalt mixtures. However, they suggested that the standard film thickness equation, which dates back to the 1940s, needs to be examined by modern technology and improved. A presumable background on which the Asphalt Institute surface area factors are based was recovered and analyzed in detail. A fundamentally sound model for film thickness calculation was developed using a model of asphalt concrete in which the aggregates are spherical but have an arbitrary size distribution. A recent result from statistical geometry is applied to determine the film thickness for any volume fraction of aggregates and any volume fraction of effective asphalt. The analytical formulas are presented, the details of the calculation are summarized, and examples are provided.
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Availability:
- Find a library where document is available. Order URL: http://www.trb.org/Main/Public/Blurbs/153236.aspx
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Supplemental Notes:
- This paper appears in Transportation Research Record No. 1829, Bituminous Binders 2003.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Radovskiy, B
- Publication Date: 2003
Language
- English
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 26-32
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Serial:
- Transportation Research Record
- Issue Number: 1829
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Asphalt mixtures; Durability; Equations; Films (Coatings); Formulas; Mathematical models; Thickness
- Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;
Filing Info
- Accession Number: 00965001
- Record Type: Publication
- ISBN: 0309085624
- Files: TRIS, TRB, ATRI
- Created Date: Oct 31 2003 12:00AM