Research on Balanced Content of Magnesium Oxide in Roller Compacted Concrete

Table 2

Physical properties of magnesium oxide.

Density (g/cm^3)	Ignition loss (%)	Fineness (%)	Activity index (s)
3.18	3.15	4.08	257

Note: fineness refers to the screen residue over an 80 μm square hole sieve.