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Presents a study which discussed the change in engineering properties due to leaching of soluble minerals from the soil. How to determine the presence of soluble soil particles; Results of tests on leached cemented sand specimens. INSET: Closure by Nabil F. Ismael and M. A. Mollah.

Comments on the presentation of a study about the swell-sink behavior of Jordanian soil. Drying phase and fatigue due to swell-shrink cycles; Specifications of the materials and conditions; Permeability as the factor responsible for achieving steady-state primary swell in lesser time.

Focuses on the drained residual shear strength of cohesive soil. Illustration of the slide at Jackfield, England; Relationship between the secant angle of residual shearing resistance and effective normal stress in log scale.

The purpose of this technical note is to compare the triaxial A -value with the percentage of swell or collapse measured in the oedometer apparatus for three different compacted soils. Those soils that collapsed in the oedometer apparatus had a high A -value from the triaxial test that is indicative of contractive behavior, and those soils that tended to swell conversely had a low to negative A -value from the triaxial test indicative of dilative behavior. The relationship between triaxial A -values and the swell or collapse from oedometer tests may be useful in identifying soil-behavior discrepancies and laboratory testing errors. The soil behavior is independent of the dry density of the compacted soil and the confining pressure. [ABSTRACT FROM AUTHOR]

Highlights the opposing and supporting views on a study focusing on deformation characteristics of eastern United States (US) Piedmont residual soil. Evaluation of an equivalent modulus for use in elastic theory formulations; Conclusion on differences in deformation characteristics.

Presents information on the development of sinkholes. Definition of the raveling index; Expression for the raveling index for granular soil.

Presents the results of a field-test program to measure the uplift capacity of small-diameter driller piers in clay. Use of the stress analysis; Data on the ultimate load capacity of single pile or pier in cohesive soils.

Presents information on gilgai landforms. Significance of the compressional stress wave theory; Soil characteristics of gilgai sites in Texas.

Provides information on collapsible alluvial soil. Methods used to reduce collapse potential.