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
IES CIVIL
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
IES CIVIL
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.
@IESCIVIL
Separation of water, sand and cement from a freshly mixed concrete is known as
Anonymous Poll
64%
Segregation
2%
Flooding
33%
Bleeding
1%
Creeping
The permanent deformation of concrete with time under steady load is called
Anonymous Poll
4%
Visco-elasticity
2%
Vicidity
90%
Creep
4%
Relaxation
To prevent sulphate attack in concrete, for preparing concrete mix, water pH must be within
Anonymous Poll
19%
7-10
9%
4-6
20%
5-7
52%
6-9