Civil Engineering Questions and Answers Part 3

Support civil June 22, 2018 Building material , knowledge 1 comment

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
2 retarding the setting time
3 consistency

4 air-permeability method

5 blast furnace slag cement
6 Dicalcium silicate
7 3.15
8 5 minutes
9 C3S
1o free lime content

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