Abstract: Problem subgrade materials consisting of collapsible soils are common in arid environments, which have climatic conditions and depositional and weathering processes favorable to their formation. Included herein is a ...

Abstract: A series of nondestructive tests (NDT) using a falling‐weight deflectometer and Dynaflect was performed at 20 test locations in Arizona. Deflection basins were obtained at 10 ft (3 m) intervals over 90 ft (27 m) length of ...

Abstract: A common underlying assumption in the development of soil-water characteristic curves (SWCCs) is that the soil is sufficiently stiff such that no changes occur in the volume of the soil associated with soil-suction change. ...

Abstract: The infiltration of ponded water beneath a footing on collapsible soil is monitored. Soil suction, water content, and footing settlement measurements are made. Laboratory infiltration tests are used to predict the extent ...

Abstract: A comprehensive study of sample disturbance effects on the response of collapsible soils was performed. Various factors potentially affecting degree of disturbance were studied. It was found that the effect of tube length ...

Abstract: The effect of varying percentages of large aggregate on the maximum dry density and optimum water content of clay is investigated through a series of laboratory compaction tests. Rock content (material retained on the No. ...

Abstract: The demerits of level surveys for assessing foundation movements associated with moisture-induced volume change of soils have been well discussed and debated in the literature. In spite of the limitations of level surveys, ...