00605541

Component

http://onlinepubs.trb.org...trr/1990/1278/1278-007.pdf

https://scholar.google.co...e+II&publication_year=1990

Modifications to the resilient modulus testing procedure (AASHTO T-274) and the use of synthetic samples for equipment evaluation and calibration are described. The modifications to the AASHTO T-274 were carried out to produce a testing protocol for use in the testing program of the Strategic Highway Research Program. The modifications were aimed at producing a more repeatable and less complicated test procedure. The main changes are the use of external linear variable differential transformers (LVDTs) for deformation measurements of all soil types and complete modification of the loading sequence and eliminating low deviator stresses, which produce high variability and high deviator stresses, which produce sample failure. The use of synthetic samples (polyurethane) with well-known properties to calibrate and evaluate resilient modulus equipment is also described. Synthetic samples could be an excellent choice in the development of a standard procedure for calibration of resilient modulus equipment.

This paper appears in Transportation Research Record No. 1278, Dynamic Testing of Aggregates and Soils and Lateral Stress Measurements 1990. 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

01411033

p. 51-62

1990

Transportation Research Record

0309050553

Figures (11) ; References (4) ; Tables (4)

Calibration; Deformation; Deviatoric stress; Differentials (Gears); Modulus of resilience; Polyurethane resins; Samples; Test procedures; Testing equipment; Transformers

Strategic Highway Research Program

Linear variable differential transformers; Modifications

Geotechnology; Highways; I42: Soil Mechanics

TRIS, TRB, ATRI

Mar 31 1991 12:00AM

• CHARACTERIZATION OF AGGREGATE SHAPE USING FRACTAL DIMENSION
• CONFINED COMPRESSION TEST FOR SOILS
• CORRELATION OF DILATOMETER READINGS WITH LATERAL STRESS IN CLAYS
• CORRELATIONS OF UNCONSOLIDATED-UNDRAINED TRIAXIAL TESTS AND CONE PENETRATION TESTS
• DETERMINATION OF HORIZONTAL STRESS IN NORMALLY CONSOLIDATED SANDS BY USING THE DILATOMETER TEST: A CALIBRATION CHAMBER STUDY
• DETERMINATION OF IN SITU LATERAL STRESSES IN A DENSE GLACIAL TILL
• DETERMINATION OF LAYER MODULI IN PAVEMENT SYSTEMS BY NONDESTRUCTIVE TESTING
• DEVELOPMENT OF SYNTHETIC SPECIMENS FOR CALIBRATION AND EVALUATION OF M SUB R (RESILIENT MODULUS) EQUIPMENT
• DILATOMETER LATERAL STRESS MEASUREMENTS IN SOFT SENSITIVE CLAYS
• DIRECT AND INDIRECT DETERMINATIONS OF IN SITU K SUB 0 IN CLAYS
• DYNAMIC RESPONSE OF OPEN-GRADED HIGHWAY AGGREGATES
• DYNAMIC TESTING OF NEBRASKA SOILS AND AGGREGATES
• EVALUATION OF IN SITU STRENGTH OF A PEAT DEPOSIT FROM LATERALLY LOADED PILE TEST RESULTS
• FIELD EXPERIENCE WITH THE BACK-PRESSURED K SUB 0 STEPPED BLADE
• LABORATORY MEASUREMENT OF LATERAL STRESS INDUCED BY A CAVITY EXPANSION IN A HOLLOW CYLINDER CELL
• LATERAL EARTH PRESSURE MEASUREMENTS IN A MARINE CLAY
• MEASUREMENT OF LATERAL STRESS IN COHESIVE SOILS BY FULL-DISPLACEMENT IN SITU TEST METHODS
• MEASURING AND PREDICTING LATERAL EARTH PRESSURES IN SLOPES IN SOFT CLAYS IN SWEDEN
• MULTIAXIAL TESTING OF SUBGRADE
• NUMERICAL EVALUATION OF THE PULLOUT BOX METHOD FOR STUDYING SOIL-REINFORCEMENT INTERACTION
• PREPARATION OF AGGREGATE SAMPLES FOR DYNAMIC TESTING
• REPEATED LOAD MODEL FOR SUBGRADE SOILS: MODEL APPLICATIONS
• REPEATED LOAD MODEL FOR SUBGRADE SOILS: MODEL DEVELOPMENT
• REPEATED TRIAXIAL CHARACTERIZATION OF GRANULAR BASES
• RESEARCH AND DEVELOPMENT OF A LATERAL STRESS PIEZOCONE