Tag: Soils

Foundations in Black Cotton Soils

Foundations in Black Cotton Soils: The following methods are generally adopted to meet the characteristics of foundations in black cotton soils,   (1) Foundation loads are limited to 5 tonnes/sq.m if water finds access to the foundations, otherwise it may be about 10 tonnes/...

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North Dakota Cone Test

North Dakota Cone Test North Dakota Cone Test is a cone penetration test similar to the California Bearing Ratio (C.B.R.) test developed by the North Dakota State Highways Deptt. This test is simpler and more rapid than the C.B.R. but its use is restricted to fine-grained soils a...

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California Bearing Ratio (CBR) Test on Soils

California Bearing Ratio (CBR) Test on Soils California Bearing Ratio (C.B.R.) Test which is an ad hoc penetration test developed by the California State Highways Dept. (USA) for the evaluation of sub-grade strengths. It is a measure of the shearing resistance of a soil to penetr...

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Vane Test Procedure – Shear Strength of Soils

Vane Test Procedure – Shear Strength of Soils The Vane test is a field shear test for clays in which a vane consisting of two or four blades fixed at right angles, is attached to the end of rod and pushed into the soil at the bottom of a borehole. The torque required to cau...

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Unconfined Compression Test of Soils Procedure

Unconfined Compression Test of Soils Procedure Unconfined Compression Test is similar to a compression test performed on concrete cylinders and is made by applying an axial load to cylindrical or prismatic soil samples and measuring the deformation corresponding to the stress as ...

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Triaxial Compression Test of Soils Procedure

Triaxial Compression Test of Soils Procedure Triaxial Compression test is used where more precise values of the cohesion and angle of internal friction of a soil are required than determined from a shear box test. The specimen of the soil is subjected to three compressive stresse...

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Shear Box Test of Soils – Procedure

Shear Box Test of Soils – Procedure In the shear box test, failure is caused in a pre-determined plane of the soil, the shear strength or shearing resistance and the normal stress both being measured directly, as it is a direct shear machine. The essential feature of the ap...

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Density of Soils

Density of Soils The density or true weight of a soil is equal to the specific gravity of the solid materials x 1000 (weight or density of water per Cu. m). A soil consists of solids, pores or voids and the moisture. The overall weight of the mass (including solid particles and t...

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Compressibility of Soils

Compressibility of Soils Gravels, sands and silts are incompressible, i.e., if a moist mass of these materials is subjected to compression, they suffer no significant volume change. Clays are compressible, i.e., if a moist mass of clay is subjected to compression, moisture and or...

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Resiliency of Soils

Resiliency of Soils Resiliency of a body is regarded as the extreme limit to which it can repeatedly be strained without fracture or permanent change of shape. ...

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