Question

What is the specific gravity of Portland cement?

(a) 3.15

(b) 2.94

(c) 2.65

(d) 2.22

I have been asked this question by my school teacher while I was bunking the class.

The question is from Cements, Metallurgical Coke and Synthetic Resins in chapter Miscellaneous Materials of Engineering Material & Metallurgy

Answer 1

The correct option is (a) 3.15

To elaborate: Specific gravity is defined as the ratio of the density of a material to the density of reference material. Portland cement has a higher specific gravity compared to other common cement. The specific gravities of Portland cement, slag cement, calcareous fly ash, and silica fume are 3.15, 2.94, 2.65, and 2.22 in that order.