Comparative Study on the Macroscopic and Microscopic Properties of UHPC Mixed with Limestone Powder and Slag Powder

Table 1

Chemical composition and physical properties of OPC, SF, LP, and SP.

Material	SiO2	Al2O3	Fe2O3	Cao	MgO	SO3	Specific area (m^2/kg)	Density (kg/m^3)	Activity index (%)
									7 d	28 d
OPC	18.2	3.7	3.3	66.1	2.4	4.5	371	3,090	—	—
SF	95.5	—	—	1.0	0.7	—	18,100	2,320	98	108
LP	1.6	0.2	0.2	54.2	5.0	0.2	648	2,680	—	64
SP	29.2	12.7	1.0	44.4	8.3	2.1	520	3,050	97	108