The addition of Cacl2 in concrete results in
Anonymous Poll
18%
Increased shrinkage
54%
Decreased setting time
9%
Decreased shrinkage
19%
Increased setting time
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The addition of Cacl2 in concrete results in
Answer is B) Decreased setting time .
Cacl2 is an accelerator.
Cacl2 is an accelerator.
Commonly used lime in white washing is
Anonymous Poll
26%
Quick lime
54%
Fat lime
6%
Lean lime
14%
Hydraulic lime
Le-chatelier's method can be used to determine
Anonymous Poll
9%
Fineness of cement
86%
Soundness of cement
4%
Fineness of aggregate
2%
Compressive strength of cement
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Le-chatelier's method can be used to determine
B) Soundness of cement
Le-chatelier's method is used to check soundness of cement due to the presence of unburnt lime.
Le-chatelier's method is used to check soundness of cement due to the presence of unburnt lime.
The standard consistency test is done in a
Anonymous Poll
2%
Blaine's apparatus
8%
Le-chatelier's apparatus
5%
Vane apparatus
84%
Vicat's apparatus
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The standard consistency test is done in a
D) Vicat's apparatus
Vicat's apparatus is used to determine standard consistency, initial setting time and final setting time of cement.
Vicat's apparatus is used to determine standard consistency, initial setting time and final setting time of cement.
Gypsum used in cement manufacturing acts as
Anonymous Poll
16%
Accelerator
4%
Air entraining agent
6%
Plasticizer
74%
Retarder
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Gypsum used in cement manufacturing acts as
D) Retarder
Gypsum is added to prevent flash setting of cement
Gypsum is added to prevent flash setting of cement
The initial setting time of ordinary portaland cement is ( OPC ) is
Anonymous Poll
8%
10 min.
4%
45 min.
85%
30 min.
4%
60 min.
Which of the following is added for quick setting of cement
Anonymous Poll
24%
Gypsum
7%
Alum
8%
Zinc sulphate
61%
Aluminium sulphate
IES CIVIL
Which of the following is added for quick setting of cement
D) Aluminium sulphate
Common accelerator used to decrease the setting time of cement are calcium nitrate, sodium nitrate, calcium chloride, aluminium sulphate etc.
@IESCIVIL
Common accelerator used to decrease the setting time of cement are calcium nitrate, sodium nitrate, calcium chloride, aluminium sulphate etc.
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