Experimental Study on the Mechanical Properties of the Fiber Cement Mortar Containing Polyurethane

Table 1

Chemical components of OPC, wollastonite, and silica fume.

Chemical components	SiO2	Al2O3	Fe2O3	CaO	MgO	Particle size (μm)	Loss on ignition (%)	Whiteness (%)
OPC	20∼24	4∼7	2.5∼6.0	62∼67	3.5	3∼32	—	-
Wollastonite	48∼52	—	≤0.5	45∼48	—	2∼4	≤2.5	≥90
Silica fume	92.75	0.28	0.59	0.28	0.89	0.5∼1.5	3.26	—