CEMENT-2

Q.1
High alumina cement is produced by fusing together a mixture of

Q.2
Consider the following statements:

High early strength of cement is obtained as a result of
1.Fine grinding
2.Decreasing the lime content
3.Burning at higher temperatures
4.Increasing the quantity of gypsum
Which of these statements are correct?

Q.3
Before testing setting time of cement one should test for

Q.4
Consider the following statements:

1. Test on cement paste to determine initial and final setting times are done at normal consistency condition.
2. Low heat cement has a high percentage of tricalcium aluminates.
3. High early strength Portland cement contains a larger percentage of tricalcium silicate and a lower percentage of dicalcium sillcate.
Which of these statements are correct?

Q.5
Match List-1(Property of cement) with List-2 (Testing apparatus) and select the correct answer using the codes given below the lists:

List-1
A. Specific gravity
B. Setting time
C. Soundness
D. fineness
List-2
1. Blain’s apparatus
2. Le Chatelier’s flask
3. Compress meter
4. Autoclave
5. Vicat’s apparatus
List-1 A B C D
List-2

Q.6
The role of super plasticizer in a cement paste is to

Q.7
Consider the following oxides:

1.Al2O3
2.CaO
3.SiO2
The correct sequence in increasing order of their percentage in an ordinary Portland cement is

Q.8
Increase in fineness of cement

Q.9
Match List-1(cement) with List-2 (characteristic) and select the correct answer using the codes given below the lists:

List-1
1.High alumina cement
2.Blast furnace cement
3.Quick setting cement
4.Rapid hardening cement
List-2
1.High early strength
2.Gypsum free cement
3.Selenetic cement
4.Used in mass concrete work
5.Used in chemical factories and mines

Q.10
The fineness of cement is tested by

Q.11
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