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Shear Strength of Soils Video Lecture | Soil Mechanics - Civil Engineering (CE)

30 videos|76 docs|74 tests

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Video Timeline
Video Timeline
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00:00 Types of stress - Shear Stress & Normal Stress
02:37 How the soil resists the shear stress - Mechanism of shear resistance
05:56 Interlocking of soil particles
08:43 What is the shear stress at failure - Stress Strain relationship of soil

FAQs on Shear Strength of Soils Video Lecture - Soil Mechanics - Civil Engineering (CE)

1. What is shear strength of soils?
Ans. Shear strength of soils refers to the ability of a soil material to resist shear forces or the forces that cause one layer of soil to slide or deform relative to another layer. It is an important property in civil engineering as it helps determine the stability and behavior of soils under various loading conditions.
2. How is shear strength of soils determined?
Ans. The shear strength of soils can be determined through laboratory tests such as direct shear test, triaxial test, or unconfined compression test. These tests involve applying controlled forces and measuring the resulting shear stress and strain to determine the shear strength parameters of the soil.
3. What factors affect the shear strength of soils?
Ans. Several factors influence the shear strength of soils, including the soil type, grain size distribution, moisture content, density, consolidation history, and stress conditions. These factors can significantly impact the shear strength parameters such as cohesion and angle of internal friction of the soil.
4. Why is shear strength important in civil engineering?
Ans. Shear strength is crucial in civil engineering because it helps engineers assess the stability of soil slopes, foundations, retaining walls, and other structures. By understanding the shear strength properties of soils, engineers can design structures that can withstand various loads and avoid failure or excessive deformation.
5. How can shear strength be improved in weak soils?
Ans. There are several techniques to improve shear strength in weak soils. Some common methods include soil stabilization through chemical additives or cementitious materials, soil compaction to increase density, and the use of geosynthetic reinforcement such as geotextiles or geogrids. These methods aim to enhance the shear strength and overall stability of weak soils in civil engineering projects.
30 videos|76 docs|74 tests
Video Timeline
Video Timeline
arrow
00:00 Types of stress - Shear Stress & Normal Stress
02:37 How the soil resists the shear stress - Mechanism of shear resistance
05:56 Interlocking of soil particles
08:43 What is the shear stress at failure - Stress Strain relationship of soil
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