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Wednesday, October 28, 2015

Moisture Content Determination

METHODOLOGY

MOISTURE CONTENT DETERMINATION

_______________________________________

Objective :

1) To determine the water (moisture) content of soils.

Apparatus :

1) Drying oven
2) Balance
3) Crucible
4) Gloves
5) Spatula.



Procedure : 

(1) Record the crucible number as 1 and 2. Determine and record the mass of an empty, clean, and dry crucible.(MC) 

(2) Place the moist soil in the crucibles. Determine and record the mass of the crucible (now containing the moist soil) ( MCMS ). 

(3) Place the crucible (containing the moist soil) in the drying oven that is set at 105 °C. Leave it in the oven overnight. 

(4) Remove the crucible. Allow it to cool to room temperature. Determine and record the mass of the crucible (containing the dry soil) ( MCDS ).

(5) Empty the crucible and clean it. 


Data Analysis :

(1) Determine the mass of soil solids. 

M S = MCDS − M SC 

(2) Determine the mass of pore water. 

MW = MCMS − MCDS 

(3) Determine the water content. 

w = MW/Ms x100


MOISTURE CONTENT DETERMINATION

DATA SHEET


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Specimen number
1
2

AVERAGE













Crucible number
1
2
-
-







MSC = Mass of empty, clean crucible(grams)
56.5
55.9

56.2

MCMS  = Mass of crucible and moist soil (grams)
76.4
75.8

76.1

MCDS = Mass of crucible and dry soil (grams)
73.7
73.0

73.4

MS = Mass of soil solids (grams)
17.2
17.1

17.2

MW = Mass of pore water (grams)
2.7
2.8

2.8

w = Water content, w%
15.6%
16.4%

16%






































































Written By  :  Azimy

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