광물 찌꺼기를 이용한 지오폴리머 폼 블록 제조시 SiO2/Na2O의 몰비의 영향

초록

We prepared geopolymeric foam block, using raw material as blast furnace slag, mine tailing and alkaline activator in this research. We especially discussed the effect of Si02/Na20 mole fraction on the physical properties of geopolymer foam block prepared. Geopolymer possesses excellent mechanical properties, such as fire and chemical resistance. And also toxic substitutents like heavy metals are de-toxificated by geopolymerization process, because of the dissolution and polymerization of Si and Al from mine tailing. The density of foam block prepared was ranged from 0.62 to 0.76 g/cm3 and the compressive strength was ranged from 0.9 to 5, 6 MPa, The compressive strength was increased and the density was decreased with the decrease of Si02/Na20 mole ratio, The maximum compressive strength was 5.64 MPa under the condition of Si02/Na20 mole ratio of 1.4 and 0.20% of Al powder. According to FT-IR and XRD results, geopolymer structure in foam block was found out.

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