Analysis and Prediction of Compressive Properties for Steel Fiber-and-Nanosilica-Reinforced Crumb Rubber Concrete

Table 1

Chemical composition and properties of cement.

Specific surface area (m^2/kg)	Specific gravity (kg/m^3)	Setting time (min)		SO3 (%)	MgO (%)	Cl (%)	Loss on ignition (%)	Mortar strength (MPa)
350	3100	Initial	Final	2.26	2.21	0.015	3.82	3 days	28 days
		172	230					25.6	45.8