MAKING OF GEOPOLYMERS USING CALCINED ALLOPHANE AND STUDY ON CURING TEMPERATURE

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  • SATO Kosei
    NIIGATA UNIVERSITY, Graduate School of Science and Technology（8050, Ikarashi Nino-cho, Nishi-ku, Niigata-shi, Niigata 950-2181, Japan）
  • SAITO Tsuyoshi
    NIIGATA UNIVERSITY, Faculty of Engineering（8050, Ikarashi Nino-cho, Nishi-ku, Niigata-shi, Niigata 950-2181, Japan）
  • MIYASHITA Ayano
    NIIGATA UNIVERSITY, Graduate School of Science and Technology（8050, Ikarashi Nino-cho, Nishi-ku, Niigata-shi, Niigata 950-2181, Japan）
  • SAEKI Tatsuhiko
    NIIGATA UNIVERSITY, Faculty of Engineering（8050, Ikarashi Nino-cho, Nishi-ku, Niigata-shi, Niigata 950-2181, Japan）

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Other Title
  • 煆焼アロフェンを用いたジオポリマーの作製および養生温度に関する検討

Abstract

<p>In this study, geopolymer formation behavior and optimum curing temperatures were investigated using calcined allophane, which has not been used as a cementitious material until now. As a result, powder X-ray diffraction showed the appearance of amorphous peaks, and 27Al, 29Si DD/CP MAS NMR analysis showed Q4 peaks indicating a three-dimensional structure, confirming that an amorphous polymer with a three-dimensional structure could be made. In addition, the curing temperature of 20℃ showed good strength development characteristics, while curing at 80℃ resulted in progression of zeolitization, leading to a decrease in strength. From the above, it was concluded that a curing temperature of 20℃ is the optimum curing temperature, and that geopolymer cured bodies with practicality can be produced even when Calcination Allophane is used.</p>

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