Related Questions

For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of
A 1 : 2
B 1 : 3
C 1 : 4
D 1 : 6
The constituent of cement which is responsible for all the undesirable properties of cement is
A Di-calcium silicate
B Tri-calcium silicate
C Tri-calcium aluminate
D Tetra calcium alumino ferrite
The main constituent of cement which is responsible for initial setting of cement is
A Dicalcium silicate
B Tricalcium silicate
C Tricalcium aluminate
D All of the above
Early attainment of strength in rapid hardening cement is mainly due to
A Gypsum
B Finer grinding
C Tri-calcium silicate
D Tri-calcium aluminate
Rapid hardening cement attains early strength due to
A Larger proportion of lime grounded finer than normal cement
B Lesser proportion of lime grounded coarser than normal cement
C Lesser proportion of lime grounded finer than normal cement
D Excess percentage of gypsum
To retard the initial setting time of cement, the compound responsible, is
A Tri-calcium silicate
B Gypsum
C Di-calcium silicate
D Tri-calcium aluminate
The compound of Portland cement which contributes to the strength after two to three years is
A Tri-calcium silicate
B Di-calcium silicate
C Tri-calcium aluminate
D Tetra-calcium alumino ferrite
In what ratio must a mixture of 11% sugar strength be mixed with that of 25% sugar strength so as to get a new mixture of 13% sugar strength?
A 5:1
B 6:1
C 7:2
D 10:3
The ratio of sand to gravel in a mixture is 7 : 8 while that between gravel and cement is 6 : 7. What is the ratio of sand to cement in the mixture?
A 49 : 48
B 7 : 7
C 8 : 6\
D 3 : 4
Initial setting time of cement for asbestos cement products should be not less than
A 30 minutes
B 50 minutes
C 75 minutes
D 90 minutes

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