LABORATORY TESTING OF FABRIC INTERLAYERS FOR ASPHALT CONCRETE PAVING. FINAL REPORT
Because of the proliferation of paving products being presented as reflection crack retarders, the need developed for laboratory tests that can be used as a screening device to avoid the extensive costs and delays associated with full-scale field tests. This resulted in an FHWA-financed research project to generate laboratory tests for estimating the effect of various fabric interlayers on AC overlay properties such as: 1. water permeability; 2. susceptibility to flexural fatigue reflection cracking; 3. susceptibility to vertical shear fatgue reflection cracking; 4. susceptibility to horizontal shear failure (slipping). Testing was also done to characterize popular fabrics in terms of physical/mechanical properties such as tensile strength, elongation, modulus, weight, thickness, and heat resistance. Possible correlation between these fabric properties and the above four overlay properties was investigated. In addition, methods of estimating a fabric's optimum asphalt tack coat application rate were developed. As a subproject to this research, a finite element analysis of fabric interlayers was also conducted, and is summarized in the appendix. (Author)
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Supplemental Notes:
- Study was conducted in cooperation with the Federal Highway Administration, under the research project entitled Laboratory Evaluation of Thin Interlayers for AC Reflection Crack Retardation.
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Corporate Authors:
California Department of Transportation
Transportation Laboratory
5900 Folsom Boulevard
Sacramento, CA United States 95819Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Smith, R D
- Publication Date: 1984-6
Media Info
- Features: Appendices; Figures; References; Tables;
- Pagination: v.p.
Subject/Index Terms
- TRT Terms: Asphalt concrete; Fabrics; Failure; Interfaces; Laboratory tests; Modulus; Overlays (Pavements); Permeability; Reflection cracking; Tensile strength; Thermal resistance; Thickness
- Uncontrolled Terms: Interlayers
- Old TRIS Terms: Shear failures
- Subject Areas: Geotechnology; Highways; Materials; Pavements; I35: Miscellaneous Materials;
Filing Info
- Accession Number: 00395927
- Record Type: Publication
- Report/Paper Numbers: FHWA-CA-TL-84-06
- Contract Numbers: F78TL03
- Files: TRIS, ATRI, USDOT, STATEDOT
- Created Date: Feb 28 1986 12:00AM