Soils

Quick Sand Formation/Condition

Quick Sand Formation/Condition Quick sand formation/condition is not a soil type. Quick sand formation/condition is created in saturated thick layers of loose fine sandy soils when disturbed either due to vibration such as from pile driving in the near by locality or due to the p...

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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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Test for Sand – Fine Aggregate

Test for Sand – Fine Aggregate The required test for sand are as follows, 1. Take a glass of water and add some quantity of sand in it. Then it is vigorously shaken and allowed to settle. If clay is present in sand,its distinct layer is formed at top of sand. 2. For detect...

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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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Plastic Limit Test of Soil

Plastic Limit Test of Soil A sample weighting about 15 grams is taken from the material passing the 425 micron sieve and is thoroughly mixed with water on a glass plate until it is plastic enough to be rolled into a ball. The ball of the soil is then rolled between the hand and t...

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