Civil Engineering Questions and Answers Part 3

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Civil Engineering Questions and Answers Part 3

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Q1 . If 'p' is the standard consistency of cement ,the amount of the water used in conducting the initial setting time test on cement is :
option 
1) .65 p
2) .85p
3) .6p
4).8p 

Q2 . Gypsum is used as an admixture in cement grouts for 
option
1)accelerating the setting time 
2)retarding the setting time 
3)increasing the plasticity
4)reducing the grout shrinkage

Q3.Before testing setting time of cement one should test for 
option 
1) soundness
2)strength
3)fineness
4)consistency

Q4 The fineness of cement is tested by 
option 
1) air-content method 
2) air-permeability  method  
3) Le -chatelier apparatus
4)Vicat's apparatus

Q5 For marine works ,the best suited cement is 
option
1)low heat portland cement 
2)rapid hardening cement 
3)ordinary portland cement 
4)blast furnace slag cement

Q6 Ultimate strength of cement is influenced by which one of the following ?
option
1)Tricalcium silicate 
2)Dicalcium silicate 
3)Tricalcium aluminate 
4)Tetracalcium alumino-ferrite

Q7 The specific gravity of commonly available ordinary portland cement is 
option 
1)4.92
2)3.15
3)2.05
4)1.83

Q8 A quick -setting cement has an initial setting time is about 
option 
1) 50 minutes 
2)40 minutes
3)15 minutes
4)5 minutes

Q9 In cements ,generally the increase in strength during a period of 14 days to 28 days is primarily due to
option 
1)C3A
2)C2S
3)C3S
4)C4AF

Q10 Soundness test of cement is carried out of determine its
option
1)alumina content
2)iron oxide content 
3)free lime content 
4) durability under sea water

Answer
1 .85p
retarding the setting time 
consistency
4 air-permeability  method
blast furnace slag cement
Dicalcium silicate 
7 3.15
8 5 minutes
C3S
1o free lime content

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