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Civil Engineering Objective Questions { Soil Mechanics And Foundation Engineering }

232.  Pick up the correct statement from the following :
A. The rise of the ground surface due to frost action is called frost heave.
B. The freezing of water is accompained by a volume increase of 9%.
C. Below freezing point, higher soil suction develops.
D. All the above.
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233.  The direct shear test suffers frpm the following disadvantage:
A. Drain condition cannot be controlled
B. Pore water pressure cannot be measured
C. Shear stress on the failure plane is not uniform.
D. The area under the shear and vertical loads does not remain constant throughout the test
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234. The length/diameter ratio of cylindrical specimens used in triaxial test, is generally
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235. The triaxial apparatus is usually used for
A. unconsolidated-undrained test
B. consolidated-undrained test
C. drained test
D. all the above tests.
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236.  The vane shear test is used for the in-situ determination of the undrained strength of the intact fully saturated
A. sands
B. clays
C. gravels
D. highly organic soils.
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237.  Pick up the correct statement from the following :
A. Isotropic consolidation of clay can be obtained in the triaxial apparatus under equal all-round pressure.
B. If the present effective stress is the maximum to which the clay has ever been subjected, it is called normally consolidated clay
C. If the present effective stress in the past was more than present effective stress, it is called over-consolidated clay
D. All the above.
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238. The maximum value of effective stress in the past divided by the present value, is defined as over consolidation ratio (OCR). The O.C.R. of an over consolidated clay is
A. less than 1
C. more than 1
D. None of these.
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