KERALA UNIVERSITY Class 5 geotechnical engineering Question Paper 2021

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Sample Questions

Define sensitivity, thixotropy and critical void ratio ( $5 \times 4=20$ Marks) Answer any one full questions from each Module.
(a) The percentage air voids of a natural sand deposit is 34 percent. For determining the relative density dried sand from the statum was first filled loosely in a $1000 \mathrm{~cm}^{3}$ mould and vibrated. The loose dry mass in the mould was 610 g ...
(i) Natural water content $=45 \%$ (ii) Liquid limit 55\% (iii) Plastic limit = 28\% Calculate (1) Liquidity index (2) Plasticity index (3) Compression index
(a) $1500 \mathrm{~m}^{3}$ of earth fill is to be constructed. How many cubic meters of soil are required to be excavated from borrow pit in which the void ratio is 0.90 , if the void ratio of earth fill is to be 0.70 .
(b) Explain the plasticity chart as per IS classification system. Classify the soil having Liquid limit $=38 \%$ and Plastic limit $=28 \%$ as per IS classification system.