00193386

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http://onlinepubs.trb.org...s/trr/1978/671/671-016.pdf

https://scholar.google.co...pson&publication_year=1978

The differences between the values of resilient moduli of stabilized soils measured by using repeated compression, tension flexure, and split-tension tests and the actual resilient moduli in tension and compression are explained analytically. Results indicate that values of resilient moduli measured by using repeated tension and compression tests agree well with actual values for specimens that have length-to-width ratios of 2 and caps that are at least ten times as stiff as the stabilized material in compression. Repeated flexure tests give values of resilient moduli that are lower or higher than actual values, depending on the dimensions of the specimen, the fixity at points of load application, and the method of calculation used. However, a good estimate of resilient moduli in tension and compression can be obtained for beam specimens that have length-to-width ratios equal to 4 and no lateral supports at points of load application by using simple beam-theory assumptions for a bimodular material (i.e. different moduli in tension and compression). A procedure for the determination of resilient bimodular properties (i.e., resilient tensile and compressive moduli) by using the repeated split-tension test is developed and gives values for resilient moduli in tension and compression that do not deviate from the actual values by more than 16 and 11 percent respectively. The significance of the resilient bimodular properties on the response of stabilized layers under traffic loads is assessed analytically. The results show that tensile stresses and strains on the underside of the stabilized layer are highly influenced by the resilient compressive and tensile moduli of the material. /Author/

This paper appeared in TRB Record 671, Analysis of Pavement Systems. 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. Publication of this paper sponsored by Committee on Strength and Deformation Characteristics of Pavement Sections.

01411510

pp 92-98

1978

Transportation Research Record

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Figures (12) ; References (15) ; Tables

Compression tests; Flexure; Pavement layers; Resilience (Materials); Soil stabilization; Tension; Tension tests; Traffic loads

Tensile stress

Freight Transportation; Geotechnology; Highways

TRIS, TRB

May 26 1979 12:00AM

• ANALYSIS OF LOAD, TEMPERATURE, AND SHRINKAGE EFFECT ON CONTINUOUSLY REINFORCED CONCRETE PAVEMENT
• ANALYSIS OF TANDEM AXLE LOADS BY ELASTIC THEORY
• BAYESIAN APPROACH APPLIED TO PREDICTION OF PAVEMENT DISTRESS (ABRIDGMENT)
• DESIGN AND BEHAVIOR OF SOIL-FABRIC-AGGREGATE SYSTEMS
• EVALUATION OF INCREASED TRUCK SIZE AND MASS ON PAVEMENT LIFE AND DESIGN THICKNESS
• FATIGUE BEHAVIOR OF AIR-ENTRAINED CONCRETE
• FINITE-ELEMENT ANALYSIS OF JOINTED OR CRACKED CONCRETE PAVEMENTS
• LABORATORY TESTING OF COHESIVE SUBGFRADES: RESULTS AND IMPLICATIONS RELATIVE TO STRUCTURAL PAVEMENT DESIGN AND DISTRESS MODELS
• PAVEMENT DESIGN CHARACTERISTICS OF IN-SERVICE PORTLAND CEMENT CONCRETE (ABRIDGMENT)
• PAVEMENT-LAYER MODULAR RATIOS FROM DYNAFLECT DEFLECTIONS
• PROCEDURE FOR PREDICTING OCCURRENCE AND SPACING OF THERMAL-SUSCEPTIBILITY CRACKING IN FLEXIBLE PAVEMENTS
• RUTTING EVALUATION OF SUBGRADE SOILS IN OHIO
• STRUCTURAL DESIGN FOR HEAVILY TRAFFICKED, PLAIN-JOINTED CONCRETE PAVEMENT BASED ON SERVICEABILITY PERFORMANCE