Design Analysis and Test Verification of Double-Layer Gradient Coating Reinforced Concrete Flexural Strength

Table 1

Chemical composition of cement and expansion.

Material	CaO	SiO2	Al2O3	SO3	Fe2O3	MgO
P·O42.5R	56.78	22.61	7.01	1.94	2.89	3.73
SAC42.5	49.50	8.51	20.17	14.91	1.97	0.77
HME®-IV	52.56	1.03	13.61	28.33	0.66	1.81