Gilsonite Moisture
One method of quantifying moisture in natural bitumen is measuring the weight loss of a sample after drying.
We can use laboratory method for determining the bitumen moisture sensitivity based on D3173 ASTM method.
Analysis Sample:
The analysis sample is that sample which has been pulverized to pass 250-µm.
Apparatus:
- Drying Oven
- Capsules, with covers
- capable of temperature regulation between limits of 104 and 110°C may be used
The shapes of these devices are shown below:
OVEN
CAPSULE
Test Procedure:
Moisture is determined by establishing the loss in weight of the sample when heated under rigidly controlled conditions of temperature, time and atmosphere, sample weight, and equipment specifications.
Calculation:
%Moisture in analysis sample=[(A-B)/A]×A]×100
Where:
A= sample used (grams)
B= sample after heating (grams)