**3.3 Molding, casting and compaction**

Geopolymer prepared with different variables are designated as S1, S2, and S3 (**Table 2**). The shape of mould is cylindrical 70 mm height and 55 mm diameter, respectively. The poured materials are rammed for compaction. The whole mixture is allowed to set for 3 minutes before demoulding samples. These are then rammed or struck for compaction followed by setting for 3 minutes before demoulding the sample. GP samples are removed from molds and are used for further investigations. It is to be mentioned their inside surface are coated with diesel oil to ensure smoother surfaces of samples. The entire process has been described (**Figure 2**).


**Table 3.**

*Variation of SS and SH with other parameters as curing time 24 h, curing temperature 70 C, mesh 240 [24].*

*Synthesis and Characterizations of High Carbon Ferrochrome (HCFC) Slag Based Geopolymer DOI: http://dx.doi.org/10.5772/intechopen.97140*

**Figure 2.** *Schematic diagram of process for preparation HCFC slag based GP product [23].*
