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Soil Mechanics and Foundation Engineering

Q1: Determination of water content of a soil sample suspected to contain gypsum is made by drying the sample for longer period at a temperature not more than

A 60°C

B 80°C

C 100°C

D 110°C

ANS:B - 80°C

Certain soils contain gypsum which on heating loses its water if crystallization. If it is suspected that gypsum is present in the soil sample used for moisture content determination it shall be dried at not more than 80 'C and possibly for a longer time. For soils having high gypsum contain temperature is not increaseed beyond 80° in order to loss of water crystalization. For gypsum and calcium -80.
For organic -60.



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