Influence of MgO and Hybrid Fiber on the Bonding Strength between Reactive Powder Concrete and Old Concrete

Table 1

Chemical composition of cement.

	CaO	SiO2	Al2O3	Fe2O3	MgO	Na2O	SO3	Loss
P.O425R	61.13	21.43	5.24	3.78	2.08	0.78	2.24	3.32
P.C325	55.82	26.39	4.23	3.11	3.02	0.71	2.45	4.27