Homework # 1
Question (1):
a) List Portland cement oxides, their abbreviation letter and their percentage in portland cement.
b) What is the role of secondary oxides in cement manufacturing?
Question (2):
What are the primary oxides, secondary oxides and the minor oxides?
Question (3):
Sketch the kiln and show the reactions at various temperatures.
Question (4):
a) A clinker has the following oxides:
C |
S |
A |
F |
|
65 |
21.1 |
4.2 |
4.9 |
2.0 |
Use Bogue equation to estimate the potential compound and define the cement type.
b) What are the basic assumptions of Bogue equation?
Question (5):
Explain the rate of hydration and strength gain for each of the cement compounds.
Question (6):
Explain the lime saturation factor (LSF) and what does it indicate if “Low” or “High”?