Application of Extreme Gradient Boosting Based on Grey Relation Analysis for Prediction of Compressive Strength of Concrete

Table 2

Scaling factor of compressive strength of concrete under different dimensions.

Shape	Size (mm)	Scaling factor (P/P0)
Cylinder	d = 100, h = 200	0.72
Cube	1 = 40	1.16
Cube	1 = 50	1.13
Cube	1 = 70	1.07
Cube	1 = 75	1.06
Cube	1 = 100	1.00
Cube	1 = 150	0.91