The hydraulic conductivity for unsaturated soil conditions is more difficult to estimate than for the saturated condition. In addition, as the soil transitions from intact to cracked, the difficulty in estimating the unsaturated hydraulic conductivity increases. One critical step in the determination of unsaturated flow hydraulic conductivity is the eva...
View ArticleThis study analyses the real applicability of laser scanning techniques to determine bulk densities of fine grained soils. The method, fast and accurate, can be employed both in the field and laboratory. The technique was calibrated with benchmarks and then applied to measure volumes of small samples of a specific silty soil of well-known properties (gr...
View ArticleThe behavior of experimental pile groups is simulated by 3-D finite element modeling in this paper. The modeled results are compared to small-scale tests in a row of three closely spaced piles in the London clay. The tests aimed at investigating soil-pile-cap interaction and pile-group effect. It is shown that 3-D FE modeling can be regarded as an appro...
View ArticleThe paper corresponds to the Pacheco Silva Lecture delivered by the author in September 2014. In the first part of the text, a general perspective of the movements induced by deep excavations in soft soils is outlined. The general report presented by Ralph B. Peck to the 1969 ISSMFE México conference is taken as reference and the pr...
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