Novel method for stress history analysis in normally consolidated clays
Artículo de revista
2021-06-09
Journal of Physics: Conference Series
Reino Unido
The historical investigation of stresses in a clay material is essential to predict the
compressible behaviour of a soil layer that, in most cases functions as a foundation support of
superstructures. Because the stresses underwent in the geological past provide useful information
to understand the response of the soil today. There are numerous methods for the interpretation
of the preconsolidation stress, defined by the standard unidimensional consolidation test. The
concept of preconsolidation stress is extremely useful in the geotechnical field to analyze and
estimate settlements in a clay deposit, in addition to normalizing other parameters for
comparative purposes. Through mineralogical analysis and consolidation tests based on different
models for the estimation of the vertical consolidation coefficient, preconsolidation stress is
evaluated by applying disparate constitutive methods. In order to observe the dispersion of
results for a particular soil. A new technique is proposed for the determination of the
preconsolidation stress prescribed in differential terms and with a high degree of objective
interpretation.
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