00471858

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http://onlinepubs.trb.org...trr/1986/1089/1089-016.pdf

https://scholar.google.co...rich&publication_year=1986

An experimental investigation of the drained shear strenth of soils from three sites within the Durham Triassic Basin of North Carolina is described. Multistage direct shear tests conducted on specimens trimmed from block samples were utilized to evaluate the postpeak shear strength of these materials. In general, the observed reduction in strength with accumulated displacement beyond the peak strength was in good agreement with data repored in the literature for other overconsolidated soils. The residual friction angle for the soils tested was found to follow the trend of decreasing friction angle with increasing plasticity index. These results support the need for utilizing drained shear strength parameters and effective stress analyses for predicting the sability of slopes cut in overconsolidated residual soils. In a companion paper in this Record a case study is presented of a well-documented slope failure within the Durham Triassic Basin that indicates the appropriateness of using noncircular failure geometrics and suggests the applicability of utilizing postpeak strengths obtained from drained direct shear tests.

Publication of this paper sponsored by Committee on Soil and Rock Properties.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

01418818

pp 102-113

1986

Transportation Research Record

0309041090

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Figures (5) ; Maps (2) ; Photos (4) ; References (19) ; Tables (2)

Direct shear tests; Dislocation (Geology); Drainage; Friction; Overconsolidation; Plasticity index; Residual soils; Shear strength; Slope stability

Friction angle

Geotechnology; Highways; Hydraulics and Hydrology; I42: Soil Mechanics

TRIS, TRB

Jul 31 1988 12:00AM

• ANALYSIS OF SLOPE FAILURE IN OVERCONSOLIDATED FISSURED RESIDUAL SOILS: A CASE STUDY
• COMPRESSIBILITY OF COMPACTED FILLS EVALUATED BY THE DILATOMETER
• CONSTRUCTION METHODS TO CONTROL EXPANSIVE SOILS IN SOUTH DAKOTA
• CONTROL OF FROST PENETRATION IN ROAD SHOULDERS WITH INSULATION BOARDS
• DEFORMATION ANALYSES OF FLORIDA HIGHWAY SUBGRADE SAND SUBJECTED TO REPEATED LOAD TRIAXIAL TESTS
• DETERMINATION OF THE CRITICAL THAW-WEAKENED PERIOD IN ASPHALT PAVEMENT STRUCTURES
• DYNAMIC COMPACTION OF LOOSE AND HYDROCOMPACTIBLE SOILS ON INTERSTATE 90, WHITEHALL-CARDWELL, MONTANA
• EXPERIMENTAL ASPECTS OF MERCURY INTRUSION POROSIMETRY
• FACTORS IMPORTANT TO THE DEVELOPMENT OF FROST HEAVE SUSCEPTIBILITY CRITERIA FOR COARSE-GRAINED SOILS
• FLEXURAL FATIGUE STRENGTH OF LIME-LATERITE SOIL MIXTURES
• FROST ACTION PREDICTIVE TECHNIQUES: AN OVERVIEW OF RESEARCH RESULTS
• GENESIS AND DISTRIBUTION OF COLLUVIUM IN BUFFALO CREEK AREA, MARION COUNTY, WEST VIRGINIA
• LOCATING SUBSURFACE GRAVEL WITH THERMAL IMAGERY: PRELIMINARY RESULTS
• MEASUREMENT OF PORE-SIZE DENSITY FUNCTION IN SAND
• PERFORMANCE OF CEMENT-MODIFIED SOILS: A FOLLOW-UP REPORT
• PHYSICAL PROPERTIES OF SOUTHEASTERN WASHINGTON LOESS RELATED TO CUT SLOPE DESIGN
• SATURATION EFFECTS ON CALCAREOUS DESERT SANDS
• THE PRESSUREMETER IN GEOTECHNICAL PRACTICE
• THE SHERMAN LANDSLIDE: A CASE HISTORY
• USE OF ROTATIONAL EROSION DEVICE ON COHESIVE SOILS