DESIGN OF EMULSIFIED ASPHALT TREATED BASES

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.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1968/239/239-003.pdf
• Supplemental Notes:
  • 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
• Authors:
  • Finn, F N
  • Hicks, R G
  • Kari, W J
  • Coyne, L D
• Publication Date: 1968

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 54-75
• Monograph Title: Design and performance of pavement systems
• Serial:
  • Highway Research Record
  • Issue Number: 239
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: 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
• Uncontrolled Terms: Design criteria
• Old TRIS Terms: Bituminous stabilization; Elastic theory; Layered system mechanics; Thickness design
• Subject Areas: Design; Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00205730
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Jan 31 1994 12:00AM