00193793

Component

http://onlinepubs.trb.org...s/trr/1978/675/675-002.pdf

http://scholar.google.com...kire&publication_year=1978

Factors that affect the thaw strain of a remolded clay were studied by using conventional isotropic and anisotropic consolidation techiques. A test sequence was developed to simulate a temperature history experienced by soils in many parts of the continental United States. The test sequence was divided into 24-h increments and included isothermal consolidation undrained freezing, undrained thaw, and isothermal recompression. For all test sequences, the loading applied before the consolidation phase was held constant throughout the test period. The effect of various factors on thaw strain was determined by comparison of results obtained from isotropically and anisotropically loaded samples subjected to confining pressures of 103, 207, and 414 kPa (15, 30, and 60 lbf/sq in.). In addition, the effect of repeated freeze-thaw was obtained form tests where the undrained freeze and undrained thaw phase of the test sequence was repeated up to four times. Results from the test indicate that thaw strain increases with increasing principal stress ratio and also increases as the confining pressure descreases. It was also observed that excess pore pressures developed during the undrained freezing and undrained thaw phase of the test and that these pore pressures are closely related to the development of thaw strain. /Author/

This paper appeared in TRB Record 675, Moisture and Frost-Related Soil Properties. Publication of this paper sponsored by Committee on Frost Action. 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.

01411514

pp 6-10

1978

Transportation Research Record

Digital/other

Figures (5) ; References (9) ; Tables (2)

Clay; Consolidation; Freeze thaw durability; Pore pressure; Soils; Strain (Mechanics); Thaw; Undrained shear tests

Soil consolidation; Undrained tests

Geotechnology; Highways

TRIS, TRB

May 11 1979 12:00AM

• EFFECT OF DRYING TEMPERATURE ON THE INDEX PROPERTIES OF CALCRETES
• EFFECTS OF WATER ADSORPTION ON KAOLIN CLAY DURING SHEAR
• EVALUATION OF HYSTERESIS IN MERCURY INTRUSION POROSIMETRY BY SECOND-INTRUSION METHOD
• EXPANDED POLYSTYRENE CONCRETE SUBBASES
• LABORATORY EVALUATION OF MATERIALS AND DESIGN CHARACTERISTICS OF PENNDOT UNDERDRAIN SYSTEM
• PHASE COMPOSITION MEASUREMENTS ON SOILS AT VERY HIGH WATER CONTENTS BY THE PULSED NUCLEAR MAGNETIC RESONANCE TECHNIQUE