Using of Microsilica for Strength Improvement of Fiber Reinforced Cementitious Surface Compounds

Table 1

Chemical composition of starting materials.

Oxide composition (%)	SiO2	Al2O3	Fe2O3	CaO	MgO	Na2O	K2O	SO3
OPC	21.3	2.6	2.8	65.6	1.56	0.22	0.86	3.15
UFS	98.81	0.14	0.05	0.51	0.02	0.04	0.03	0.03