Related Questions

Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of portland cement. The component of Portland cement which first hardens is
A 5CaO . 3Al2O3
B 3CaO . Al2O3
C 3CaO . SiO2
D 2CaO . SiO2
According to IS specifications, the compressive strength of ordinary Portland cement after three days should not be less than
A 7 MPa
B 11.5 MPa
C 16 MPa
D 21 MPa
As compared to ordinary portland cement, high alumina cement has
A Higher initial setting time but lower final setting time
B Lower initial setting time but higher final setting time
C Higher initial and final setting times
D Lower initial and final setting times
As compared to ordinary portland cement, use of pozzuolanic cement
A Reduces workability
B Increases bleeding
C Increases shrinkage
D Increases strength
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 compound of Portland cement which reacts immediately with water and also sets first is
A Tri-calcium silicate
B Di-calcium silicate
C Tri-calcium aluminate
D Tetra calcium alumino ferrite
A, B and C enter into a partnership. A contributes one-third of the capital while B contributes as much as A and C together contribute. If the profit at the end of the year amounts to Tk. 900, What would C receive?
A Tk. 200
B Tk. 150
C Tk. 100
D Tk. 300
Ordinary Portland Cement এর Initial Setting Time কত?
A ৫ মিনিট
B ১০ মিনিট
C ৩০ মিনিট
D ৫ ঘণ্টা
The normal consistency of ordinary Portland cement is about
A 10%
B 20%
C 30%
D 40%
Addition of pozzolana to ordinary Portland cement increases
A Bleeding
B Shrinkage
C Permeability
D Heat of hydration

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