Determine the weight of solids mixed in the suspension, Civil Engineering

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In a hydrometer analysis, the corrected hydrometer reading in a 1000 ml uniform soil suspension at the start of sedimentation was 28. After a lapse of 30 minutes, the corrected hydrometer reading was 12 and the corresponding effective depth 10.5 cm. The specific gravity of the solids was 2.70. Suppose the viscosity and unit weight of water at the temperature of the test as 0.001 N-s/m2 and 9.8 kN/m3 respectively, determine the weight of solids mixed in the suspension, the effective diameter corresponding to the 30-min. Reading and the percentage of particles finer than this size.

 


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