Initial data for determining the specific gravity of a soil sample is given below:Calibration of Pycnometer(1) Mass of dry clean pycnometer, M₁ = 317.11 g(2) Mass of pycnometer + water at calibration temperature, Mpw,c = 903.03 g(3) Observed temperature of water at calibration, Tc = 26.4°CSecondary data for the determination of Specific Gravity is as follows:Determination No:Mass of pycnometer + soil + water at test temperature, Mpws,t (9)Test Temperature, T₁ (°C)Mass of pycnometer + water at T₁, Mpw,t (9)Evaporating dish no.Mass of evaporating dish, Md (9)Mass of evaporating dish + oven-dried soil, Mds (g)Mass of solids, Ms (9)1966.1722.3115.52115.51Conversion factor, KSpecific gravity of soil, Gs@20°CDetermine the Mass of Solids, Ms. (Units of g, 2 decimal places)

Answered: Determine the Mass of Solids, Ms.…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

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Initial data for determining the specific gravity of a soil sample is given below:
Calibration of Pycnometer
(1) Mass of dry clean pycnometer, M₁ = 317.11 g
(2) Mass of pycnometer + water at calibration temperature, Mpw,c = 903.03 g
(3) Observed temperature of water at calibration, Tc = 26.4°C
Secondary data for the determination of Specific Gravity is as follows:
Determination No:
Mass of pycnometer + soil + water at test temperature, Mpws,t (9)
Test Temperature, T₁ (°C)
Mass of pycnometer + water at T₁, Mpw,t (9)
Evaporating dish no.
Mass of evaporating dish, Md (9)
Mass of evaporating dish + oven-dried soil, Mds (g)
Mass of solids, Ms (9)
1
966.17
22.3
1
15.52
115.51
Conversion factor, K
Specific gravity of soil, Gs@20°C
Determine the Mass of Solids, Ms. (Units of g, 2 decimal places)

Expert Solution

Step 1 Introduction and given data

The pycnometer method is used to determine the water content of a soil specimen and the specific gravity of the soil solids of an oven-dry soil specimen.

Soil exists primarily in 3 phases namely

Soil solids
Water
Air

On oven-drying water evaporates and only soil solid and air remains.

To determine the mass of the soil solids, $M_{s}$

Given,

Mass of evaporating dish, $M_{d} = 15.52 gm$

Mass of evaporating dish + oven-dry soil, $M_{ds} = 115.51 g$

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