**1. Introduction**

Portland cement (PC) is a common structural material, which is widely used in construction of structure [1–4]. PC production causes environmental problems due to release of carbon dioxide (CO2) [5]. The production of PC is extremely energy intensive process [6]. Therefore, research community have used industrial wastes such as fly ash (FA), pond ash (PA), slag, bottom ash (BA), quarry dust (QD), etc. as resource materials for the production of Geopolymer [1–5]. It is no wonder why researches are being carried out for the replacement of PC with new generation material, *i.e*., GP. Therefore, GP technology has enabled to produce an alternative material to replace PC [7, 8].

One of the wastes is slag which is obtained from Ferro-alloy industries during the production of ferrochrome [1–5]. The slag contains variety of oxides such as magnesium oxide, iron oxide and chromium oxide which exist in more than one oxidation states. Also, Ferrochrome slag may contain elemental chromium [7, 8]. The major constituents of the slag are Cr2O3, FeO, SiO2, MgO, Al2O3, CaO [7, 8]. In the year 2008, Davidovits has described GP to be a future constructional material and is predicted to replace PC in constructional areas [9, 10]. Reports are available which indicate waste materials *i.e.,* Fly Ash, Pond Ash, Bottom Ash, slag, etc. are suitable for production of Geopolymer [7, 8]. These oxides form chain-like structure by the reaction with active alkali solution such as sodium hydroxide (NaOH) or potassium hydroxide (KOH) in combination with sodium silicate [7, 8]. Thus, Geopolymer can be considered as an innovative constructional material for 21 century [11, 12]. Many researchers have described Geopolymer structure [7, 8]. The advantages of using GP materials lie in a fact that they are cheaper, unhazardous, fire resistant and environmental friendly [7, 8].

The corrosion test and pH measurements have revealed that GP material has low leachability, excellent frictional resistance. Therefore, it can be used for construction of roads [13–16].

In the current work, HCFC slag is chosen from a ferrochrome industry as main component for preparing Geopolymer. Attempt is also made to characterize both HCFC slag and as-prepared Geopolymer material through different technique such as mechanical, structural, morphological, and thermal analyses.
