Question

For coloured cement floor, mix pigment colour with neat surface cement in the proportion of ______ to ______ is to have desired colour.

(a) 1:3 to 1:6

(b) 1:3 to 1:6

(c) 1:3 to 1:6

(d) 1:3 to 1:6

The question was asked during a job interview.

Question is taken from Analysis of Rates of Cement Concrete topic in division Analysis of Rates of Civil Engineering Drawing

Answer 1

Right answer is (a) 1:3 to 1:6

The explanation: White cement mixed with colour pigment of the desired proportion may also be used, but for strength it is better if ordinary Portland cement is mixed with white cement in the proportion of 1:1 to 1:3 and then to add colour pigment to have the desired colour.