[Retracted] Electrochemical Preparation of Recycled Self-Compacting Concrete Composite Beams and Their Application in Prefabricated Buildings

Table 2

List of concrete strength changes in the cast-in-situ layer.

Concrete strength of the cast-in-situ layer	C25	C30	C25	C40
Concrete strength of the precast layer	C30	C30	C30	C30