텅스텐 폐광미를 이용한 지오폴리머 소재 제조 및 특성평가

초록

Industrial waste and by-products such as blast furnace slag, coal fly ash, and mine tailing have been discharged andimproperly managed, leading to secondary environmental contamination. However, these wastes can be used asconstruction materials through geopolymer techniques. Geopolymer paste and concrete samples were prepared usingtungsten mine tailing and blast furnace slag as the raw materials in this research. Compressive strength was measuredto evaluate the characteristics of the samples. Additionally, XRD and SEM analyses were performed. A higher compressivestrength of the geopolymer paste was obtained by reducing the content of the tungsten mine tailing: 125.4 MPa for 40wt.% of the mine tailing. Furthermore, the compressive strengths for the prepared concrete samples (GMR-5NA, GMR-5FA, and GMR-5RA) were 54.3 MPa, 58.1 MPa, and 32.9 MPa after 28 days, respectively. According to the XRD analysisfor the prepared paste and prepared concrete, the geopolymer structure was identfied. Therefore, tungsten mine tailingcan be used as alternative cement material.

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