Effect of Biopolymeric Stabilization on the Strength and Compressibility Characteristics of Cohesive Soil

The exposed cohesive soils to temperature can face considerable physical and mechanical characteristics changes. Therefore, understanding the environmental events influences on the soil geotechnical properties is essential, which is significant in the rainy and cold places such as in Sulaimani city, northern Iraq. This experimental study examines the temperature changes (10o C, and 50o C) impacts on the durability of stabilized cohesive soil using 0%, 5%, 10% and 15% hydrated-lime added as a replacement on the soils dry mass. Consistency, unconfined compression, and compressibility characteristics were evaluated. Under the applied circumstances, a decrease was noticed in the magnitudes of liquid limit and plasticity index, while plastic limit generally increased within hydrated-lime percent increase. The study yielded an appreciable improvement of the cohesive soil’s strength and compressibility properties with time progress, especially after the stabilization process is achieved.

Download Full-text

Finite Element Analysis for Cohesive Soil, Stress and Consolidation Problems Using Bounding Surface Plasticity Theory.

10.21236/ada137638 ◽

1983 ◽

Cited By ~ 3

Author(s):

L. R. Herrmann ◽

K. D. Mish

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Cohesive Soil ◽

Plasticity Theory ◽

Bounding Surface ◽

Element Analysis ◽

Bounding Surface Plasticity ◽

Surface Plasticity ◽

Soil Stress

Download Full-text

BEHAVIOR OF STABLIZING SLOPES WITH SAND TRENCH IN COHESIVE SOIL DUE TO STRIP FOOTING

JES. Journal of Engineering Sciences ◽

10.21608/jesaun.2008.115989 ◽

2008 ◽

Vol 36 (2) ◽

pp. 337-355

Author(s):

Mostafa Abdou Abd El-Naiem

Keyword(s):

Cohesive Soil ◽

Strip Footing

Download Full-text

An X-ray CT study of miniature clay sample preparation techniques

E3S Web of Conferences ◽

10.1051/e3sconf/20199201004 ◽

2019 ◽

Vol 92 ◽

pp. 01004

Author(s):

Christopher Ibeh ◽

Matteo Pedrotti ◽

Alessandro Tarantino ◽

Rebecca Lunn

Keyword(s):

Sample Preparation ◽

Shear Plane ◽

Cohesive Soil ◽

Image Resolution ◽

Particle Orientation ◽

X Ray ◽

High Resolution Images ◽

X Ray Computed ◽

Sample Disturbance ◽

Relationship Of

The quality and reliability of cohesive soil laboratory test data can be significantlyaffected by sample disturbance during sampling or sample preparation. Sample disturbance may affect key design and modelling parameters such as stiffness, preconsolidation stress, compressibility and undrained shear strength, and ultimately determine particle mobilization and shear plane development. The use of X-ray computed tomography (X-CT) in the study of soil is restricted by the inverse relationship of specimen size and obtainable image resolution. This has led to the testing of miniature specimen sizes which are far less than conventional laboratory sample size in a bid to obtain high resolution images and detailed particle-scale soil properties; however, these miniature soil specimens are more prone to sample disturbance. In this work 2% muscovite was mixed with speswhite kaolin clay as a strain marker for use in X-CT. The clay soil sample was prepared from slurry and either consolidated using an oedometer or a gypsum mould. Specimens obtained from a 7 mm tube sampler were compared to lathe trimmed specimens with a diameter (Ø) of 7 mm. Results from X-CT imaging were used to study the influence of sampler type on specimen disturbance, by analysing the muscovite particle orientation of the obtained 3D images. The results show that; for samples subjected to large consolidation stress (>200kpa) lathe trimmed specimens may be subject to lesser disturbance compared to tube sampled specimens.

Download Full-text