Compressibility and shear strength of a residual soil

Abstract

A detailed study was performed to investigate the compressibility and the shear strength of a residual soil in Omdurman, Sudan. The soil resulted from weathering of sandstone and mudstone. The soil is classified as sandy clayey silt (MH-CH) and is generally partially saturated. Consolidation tests were performed to study the compressibility of the soil and UU, CIU and insitu tests (CPT and SPT) were performed to study the shear strength characteristics of the soil. The characteristics of this residual soil can generally be predicted using correlations proposed in the literature for transported soils. The soil is of low to medium compressibility and exhibits slight apparent overconsolidation behavior. The soil dilates during shear and shows no long term effective cohesion. Problems associated with open cuts in this soil are attributed to loss of strength upon saturation.

Pore Distribution Characteristics of Thawed Residual Soils in Artificial Frozen-Wall Using NMRI and MIP Measurements

“…Granite residual soils are extensively distributed in southeast coastal areas of China [1,2]. Under the hot and rainy climate in tropical and subtropical areas, the residual soils exhibit a special grain distribution from clay to gravel due to physical and chemical weathering processes [3]. Currently, the distributed areas of granite residual soils are generally encountered in the engineering problems of subway tunnel excavation [4].…”

Effect of Drying-Wetting Cycles on Saturated Shear Strength of Undisturbed Residual Soils

“…Due to world-wide distributions and extensively used as construction materials, many research worked have already been done on residual soils. For example, the engineering characteristics, microfabric and mineralogical composition, degree of weathering, compressibility and shear strength properties and their controlling factors, bonding behavior and its loading impact, stiffness or yielding behavior of both natural and compacted residual soils are examined by numerous scholars [1][2][3][4][5][6][7][8][9][10][11]. Several geo-engineering problems associated with residual soils such as landslides, subsidences, damage of road and railway tract, building collapse in many parts of the world have also been reported.…”