Civil Engineering Department

 

CE 501

 

Homework # 1

 

 

Due on: ___________________

 

 

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”?