Electrical conductivity and dielectric property of fly ash geopolymer pastes
来源期刊：International Journal of Minerals Metallurgy and Materials2011年第1期
论文作者：Sakonwan Hanjitsuwan Prinya Chindaprasirt Kedsarin Pimraksa
文章页码：94 - 99
摘 要：The electrical conductivity and dielectric property of fly ash geopolymer pastes in a frequency range of 100 Hz-10 MHz were studied.The effects of the liquid alkali solution to ash ratios（L/A） were analyzed.The mineralogical compositions and microstructures of fly ash geopolymer materials were also investigated using X-ray diffraction（XRD） and scanning electron microscopy（SEM）.The 10 mol sodium hydroxide solution and sodium silicate solution at a sodium silicate-to-sodium hydroxide ratio of 1.0 were used in making geopolymer pastes.The pastes were cured at 40℃.It is found that the electrical conductivity and dielectric constant are dependent on the frequency range and L/A ratios.The conductivity increases but the dielectric constant decreases with increasing frequency.
Sakonwan Hanjitsuwan1，Prinya Chindaprasirt1，Kedsarin Pimraksa2
1. Sustainable Infrastructure Research and Development Center,Department of Civil Engineering,Faculty of Engineer,Khon Kaen University2. Department of Industrial Chemistry,Faculty of Science,Chiang Mai University
摘 要：The electrical conductivity and dielectric property of fly ash geopolymer pastes in a frequency range of 100 Hz-10 MHz were studied.The effects of the liquid alkali solution to ash ratios（L/A） were analyzed.The mineralogical compositions and microstructures of fly ash geopolymer materials were also investigated using X-ray diffraction（XRD） and scanning electron microscopy（SEM）.The 10 mol sodium hydroxide solution and sodium silicate solution at a sodium silicate-to-sodium hydroxide ratio of 1.0 were used in making geopolymer pastes.The pastes were cured at 40℃.It is found that the electrical conductivity and dielectric constant are dependent on the frequency range and L/A ratios.The conductivity increases but the dielectric constant decreases with increasing frequency.
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