WATER SENSITIVITY OF ASPHALT-AGGREGATE MIXES: TEST SELECTION
The research presented in this report was conducted to identify the important factors influencing the water sensitivity of asphalt paving mixtures, and to develop a test method to evaluate water sensitivity of asphalt concrete mixtures for mix design. The test method was to be performance related. A review of current procedures revealed that no single method was suitable for evaluation and related to field performance. Based on a hypothesis that air voids in the mixture may be the major source and cause of water damage, a test system was developed to evaluate the major factors that influence water sensitivity. The Environmental Conditioning System (ECS) was used to develop a test procedure that includes specimen preparation; measurement of permeability using air, water, or both; vacuum wetting; cycling at various temperatures; and continuous repeated loading while monitoring resilient modulus after each conditioning cycle. Results using four core mixtures indicated that the ECS can distinguish different materials and their relative water susceptibility. A tentative test procedure is recommended.
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Supplemental Notes:
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Corporate Authors:
Strategic Highway Research Program
National Research Council, 2101 Constitution Avenue, NW
Washington, DC United States 20418 -
Authors:
- Terrel, R L
- AL-SWAILMI, S
- Publication Date: 1994-6
Language
- English
Media Info
- Features: Appendices; Figures; References; Tables;
- Pagination: 183 p.
Subject/Index Terms
- TRT Terms: Asphalt concrete; Loss and damage; Methodology; Performance tests; Permeability; Sensitivity analysis
- Identifier Terms: Strategic Highway Research Program
- Old TRIS Terms: Damage control; Performance testing
- Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;
Filing Info
- Accession Number: 00666018
- Record Type: Publication
- ISBN: 0309058201
- Report/Paper Numbers: SHRP-A-403
- Files: TRIS, TRB, ATRI
- Created Date: Sep 15 1994 12:00AM