3. (15p) Consolidation theory is necessary to make sense of the fact that strain

Question

3. (15p) Consolidation theory is necessary to make sense of the fact that strain varies continuously with time for every stress increment. Without a method of interpretation, it would not be possible to construct a stress-strain curve or to quantify the rate of strain going from one stress point to the next. Terzaghi's theory of consolidation provides a powerful tool to guide this interpretation, but the theory makes a number of assumptions. Some of these assumptions are as follows: (1) The material within the test specimen is uniform (2) Soil grains are incompressible, but the water molecules are compressible. (3) Flow and deformation are one-dimensional. (4) The pore space is completely saturated with fluid. (5) Soil hydraulic conductivity is constant. (6) Coduto's Law is valid. Answer: (b) 3,4,5 Which statement would not be correct? (d) 4, 6 (e) 2, 6

Explanation / Answer

Answer is C i.e. soil grains are incompressible, but the water molecules are compressible. Because according to terzaghi theory of consolidation it is that both soil grains and water molecules are incompressible.

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