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Title: Early-Age Structural Properties of Base Material Treated with Asphalt Emulsion (With Discussion and Closure)
Accession Number: 01336725
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: The objectives of this research were to investigate the early-age structural properties of base materials stabilized with asphalt emulsion and to assess the rate at which emulsion-treated base (ETB) design properties are achieved. Three experimental sections were established along a pavement reconstruction project near Saratoga Springs, Utah. Field tests were performed to assess the structural properties of the ETB immediately after construction and at 2, 3, 7, and 14 days; 4 months; and 1 year. Measured values were plotted against time to determine trends in ETB strength development and to determine pavement capacity. Modulus values were consistently low in all three sections during the first 2 weeks after construction, increased dramatically by 4 months, and then decreased considerably by 1 year. In the first 2 weeks after construction, the average ETB structural coefficient was 0.04. Only two of the three sections reached the design structural coefficient of 0.25, which occurred after approximately 3 months; however, the average structural coefficient measured for all three sections after 1 year of curing, which included a winter, was only 47% of the design strength. The results of this research showed that, while pavement capacity was sufficient at 4 months, it was severely reduced during the first 2 weeks and at 1 year. Trafficking under these reduced capacities would be expected to greatly compromise long-term pavement performance. For this reason, trafficking of materials similar to those investigated in this research is not recommended during at least the first 2 weeks after construction.
Monograph Title: Monograph Accession #: 01358796
Report/Paper Numbers: 11-2775
Language: English
Authors: Quick, TylerGuthrie, W SpencerDiscussers: Thomas, Todd
Pagination: pp 40-50
Publication Date: 2011
ISBN: 9780309222891
Media Type: Print
Features: Figures
(4)
; Photos
(1)
; References
(26)
; Tables
(3)
TRT Terms: Geographic Terms: Subject Areas: Geotechnology; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials
Files: TRIS, TRB
Created Date: Feb 17 2011 6:17PM
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