00205730

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http://onlinepubs.trb.org...s/hrr/1968/239/239-003.pdf

AN INVESTIGATION WAS CONDUCTED THAT COMBINES CURRENT AND ESTABLISHED MIX DESIGN AND THICKNESS DESIGN METHODS WITH LAYERED SYSTEM ANALYSIS FOR DESIGN OF EMULSIFIED ASPHALT TREATED BASES. A FIELD SURVEY WAS CONDUCTED OF IN-SERVICE PROJECTS CONSTRUCTED WITH ASPHALT EMULSION TREATED BASES TO: (1) OBTAIN UNDISTURBED SAMPLES OF STABILIZED BASE FOR LABORATORY TESTING, AND (2) OBSERVE THE PERFORMANCE OF PAVEMENTS CONSTRUCTED WITH EMULSION TREATED BASES UNDER A VARIETY OF ENVIRONMENTS. OBJECTIVES WERE TO: (1) DESCRIBE RESULTS OF FIELD CONDITION SURVEYS OF PAVEMENTS CONSTRUCTED WITH EMULSION STABILIZED BASES, (2) EXPLORE POSSIBLE USES OF LAYERED ELASTIC THEORY FOR THICKNESS DESIGN, (3) STUDY THE INFLUENCE OF CURING TIME ON PERFORMANCE, AND (4) PRESENT A METHOD FOR MIX DESIGN ADEQUATE TO RESIST DEFORMATION. CONDITION SURVEY RESULTS SHOW THAT EMULSION STABLIZED BASES ARE PROVIDING SATISFACTORY PERFORMANCE UNDER A VARIETY OF ENVIRONMENTS AND LOADING CONDITIONS. BY COMBINING THEORETICAL CONCEPTS WITH THE EXISTING DESIGN METHODS OF THE ASPHALT INSTITUTE, A PROCEDURE WAS FOUND THAT APPEARS TO PROVIDE A REASONABLE APPROACH FOR THE DESIGN OF EMULSION STABILIZED BASES. A NOMOGRAPH IS PRESENTED WHICH MAKES IT POSSIBLE TO ESTIMATE THE RESILIENT MODULUS OF THE STABILIZED BASE WITHOUT RESORTING TO COMPLICATED LABORATORY TESTS INVOLVING CARRYING PROCEDURES. MIX DESIGN AND MATERIAL RECOMMENDATIONS TO PREVENT PERMANENT DEFORMATION UNDERLOAD ARE PRESENTED. THESE PROCEDURES ARE BASED ON WELL- ESTABLISHED METHODS FOR EVALUATING THE SHEAR STRENGTH OF MIXES.

Paper sponsored by Committee on Flexible Pavement Design and presented at the 47th Annual Meeting .Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01410183

pp 54-75

1968

Highway Research Record

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Figures (6) ; References (28) ; Tables (8)

Bituminous bases; Bituminous materials; Concrete curing; Condition surveys; Design; Elasticity (Mechanics); Emulsified asphalt; Laboratory tests; Mix design; Nomographs; Pavement performance; Shear strength; Soil stabilization; Thickness; Time; Undisturbed samples

Design criteria

Design; Geotechnology; Highways; Pavements

TRIS, TRB

Jan 31 1994 12:00AM

• A Statewide Deflection Study of Continuously Reinforced Concrete Pavement in Texas
• A SYSTEMS ANALYSIS OF THE HIGHWAY PAVEMENT DESIGN PROCESS
• A Thickness Design Method for Concrete Pavements
• A Twenty-Year Report on the Illinois Continuously Reinforced Pavement
• DESIGN OF PAVEMENTS USING DEFLECTION EQUATIONS FROM AASHO ROAD TEST RESULTS
• EXPERIMENTAL COMPOSITE PAVEMENT IN NEW JERSEY
• Fatigue Tests of Presressed Concrete Pavements
• FIELD STUDY OF PERFORMANCE AND COST OF A COMPOSITE PAVEMENT CONSISTING OF PRESTRESSED CONCRETE PANELS INTERCONNECTED AND COVERED WITH ASPHALTIC CONCRETE
• MICHIGAN INVESTIGATION OF SOIL-AGGREGATE CUSHIONS AND REINFORCED ASPHALTIC CONCRETE FOR PREVENTING OR REDUCING REFLECTION CRACKING OF RESURFACED PAVEMENTS
• SYSTEMS OF PAVEMENT DESIGN AND ANALYSIS
• THEORETICAL ASPHALTIC CONCRETE EQUIVALENCES