Specific gravity is normally used in mixture proportioning calculations. The specific gravity of portland cement is generally around 3.15 while the specific gravity of portland-blast-furnace-slag and portland-pozzolan cements may have specific gravities near 2.90 (PCA, 1988).
Standard Test Methods
- Portland Cement Association (PCA). (1988). Design and Control of Concrete Mixtures. Portland Cement Association. Skokie, IL.↵