00713475

Component

http://onlinepubs.trb.org...trr/1995/1479/1479-006.pdf

https://scholar.google.co...ayne&publication_year=1995

A unified approach for profiling the effective yield stress of natural clays by in situ tests is presented. The empirical methodology is developed from statistical regression analyses of databases involving soft-to-firm normally consolidated clays and stiff-to-hard overconsolidated clay deposits that have been tested using the cone penetration, piezocone, dilatomater, vane shear, pressuremeter, and standard penetration tests. Similar trends are established for field test results in intact clays, whereas deviations occur for fissured materials. The interpreted profiles of the effective yield stress from in situ tests are quick, economical, and continuous, yet should be verified by companion sets of laboratory oedometer tests on high-quality specimens. The procedures are applied to two case studies involving natural clay deposits near Washington, D.C., where reference consolidation test data were available.

This paper appears in Transportation Research Record No. 1479, Engineering Properties and Practice in Overconsolidated Clays. 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

01399782

English

p. 43-50

1995

Transportation Research Record

Figures (8) ; References (33) ; Tables (1)

Case studies; Clay; Cone penetrometers; Databases; Dilatometers; Empirical methods; Field studies; Field tests; Laboratory tests; Oedometers; Pressure gages; Regression analysis; Soil penetration test; Vane shear tests; Yield stress

Field data; Piezocone tests

Data and Information Technology; Geotechnology; Highways; I41: General Soil Surveys; I42: Soil Mechanics

TRIS, TRB

Nov 2 1995 12:00AM

• CHARACTERIZATION OF PRECONSOLIDATED SOILS IN RICHMOND, VIRGINIA
• DESIGN PRACTICES IN OVERCONSOLIDATED CLAYS OF NEW YORK
• ENGINEERING PROPERTIES OF OVERCONSOLIDATED PLEISTOCENE SOILS OF TEXAS GULF COAST
• GEOTECHNICAL BEHAVIOR OF OVERCONSOLIDATED SURFICIAL CLAY CRUSTS
• GEOTECHNICAL ENGINEERING PRACTICE IN OVERCONSOLIDATED CLAYS, SAN DIEGO, CALIFORNIA
• IN SITU TESTING IN OVERCONSOLIDATED CLAYS
• ISSUES AND TECHNIQUES FOR SAMPLING OVERCONSOLIDATED CLAYS
• LABORATORY METHODS FOR DETERMINING ENGINEERING PROPERTIES OF OVERCONSOLIDATED CLAYS
• MEASUREMENT OF DRAINED RESIDUAL STRENGTH OF OVERCONSOLIDATED CLAYS
• OVERCONSOLIDATED GLACIAL TILLS IN EASTERN WISCONSIN
• OVERVIEW OF STATE-OF-THE-PRACTICE MODELING OF OVERCONSOLIDATED SOILS
• U.S. STATE OF THE PRACTICE IN SAMPLING AND STRENGTH TESTING OF OVERCONSOLIDATED CLAYS