Grey Prediction Model for Drying Shrinkage of Cement Concrete Made from Recycled Coarse Aggregate Containing Superabsorbent Polymers

Table 1

Physical properties of cement.

Indicators	Fineness (%)	Setting time (min)		Volume stability (mm)	Compressive strength (MPa)		Flexural strength (MPa)
		Initial setting	Final setting		3 d	28 d	3 d	28 d
Value	2.3	165	260	1.5	18.5	46.8	4.7	7.0