Material properties of water-swelling material used as a water cutoff treatment material at waste landfill sites |
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Authors: | Shinya Inazumi Tadashi Wakatsuki Masakatsu Kobayashi Makoto Kimura |
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Institution: | 1. Graduate School of Engineering, Kyoto University, C1-2, No. 234, Katsura, Nishikyo-ku, Kyoto, 615-8540, Japan 2. Nihon Chemical Paints Co., Ltd., Ayase, Japan 3. Innovative Collaboration Center, Kyoto University, Kyoto, Japan
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Abstract: | Water-swelling material (WSM) is a fluid sealant obtained by blending high-absorbency polymer, a filler, and a solvent by
using a synthetic resin elastomer as the base material. In this research, we studied experimentally the composition of WSM,
the extent of swelling, the strength of the WSM and the long-term performance of the swelling material used as a jointed water
cutoff treatment material at waste landfill sites. One of the results was that adjusting the degree of etherification of the
high-absorbency polymer, which is a component of the WSM, and the resin content of the synthetic elastomer contributed to
improvement of the swelling of the sealant and the strength of the swelling material. Further, in long-term tests, the strength
of the WSM tended to become stabilized and it was confirmed that it had sufficient pressure resistance for use in coastal
landfill sites, where its application as a water cutoff treatment material is being considered. |
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