Experimental Study on Mechanism of Graphene Oxide-Modified Coral Sand Cement Mortar to Resist Sulfate Erosion

Table 2

Chemical composition of ordinary Portland cement.

Chemical composition	CaO	SiO2	Al2O3	Fe2O3	K2O	MgO	Na2O	SO3
Content/%	62.37%	22.38%	5.13%	3.31%	0.82%	2.66%	0.57%	2.16%