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A platform for research: civil engineering, architecture and urbanism
Factors Affecting the Long Term Strength of Compacted Beaumont Clay
The report describes results of an ongoing study of the stability of embankments constructed of highly plastic clays in Texas. Previous studies showed that such embankments failed by sliding many (10-30) years after construction and that the apparent shear strengths were substantially lower than the long-term shear strengths determined on the basis of laboratory tests on compacted specimens. The report presents the finding of several series of tests performed to understand better the reasons for the discrepancies between field and laboratory shear strengths. Triaxial shear tests were performed to measure the effective stress shear strength parameters on (a) undisturbed specimens taken from actual slopes which had failed, (b) specimens prepared by consolidating soil from a slurry in the laboratory, and (c) specimens prepared by packing (remolding) soil into a special mold in the laboratory. In addition, residual shear strengths were determined on conventional compacted specimens. None of these tests fully explained the differences between field and laboratory strengths and produced agreement between laboratory and field values.
Factors Affecting the Long Term Strength of Compacted Beaumont Clay
The report describes results of an ongoing study of the stability of embankments constructed of highly plastic clays in Texas. Previous studies showed that such embankments failed by sliding many (10-30) years after construction and that the apparent shear strengths were substantially lower than the long-term shear strengths determined on the basis of laboratory tests on compacted specimens. The report presents the finding of several series of tests performed to understand better the reasons for the discrepancies between field and laboratory shear strengths. Triaxial shear tests were performed to measure the effective stress shear strength parameters on (a) undisturbed specimens taken from actual slopes which had failed, (b) specimens prepared by consolidating soil from a slurry in the laboratory, and (c) specimens prepared by packing (remolding) soil into a special mold in the laboratory. In addition, residual shear strengths were determined on conventional compacted specimens. None of these tests fully explained the differences between field and laboratory strengths and produced agreement between laboratory and field values.
Factors Affecting the Long Term Strength of Compacted Beaumont Clay
R. Green (author) / S. G. Wright (author)
1986
213 pages
Report
No indication
English
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