[Retracted] Response Surface Methodology Approach to Predict the Flexural Moment of Ferrocement Composites with Weld Mesh and Steel Slag as Partial Replacement for Fine Aggregate

Table 1

Levels of variables.

Variables	Low level (−1)	Intermediate level (0)	High level (+1)
Ferrocement volume fraction	≤ 0.01	1.425	2.35
Steel slag	≤ 0.01	25	50