Development of innovative mud treatment technology using waste paper and elucidation of the treatment mechanism

2021 Fiscal Year Final Research Report

• Project/Area Number: 19H02235
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 22030:Geotechnical engineering-related
• Research Institution: Kyoto University
• Principal Investigator: Kimura Makoto 京都大学, 工学研究科, 教授 (30177927)
• Co-Investigator(Kenkyū-buntansha): 澤村 康生 京都大学, 工学研究科, 准教授 (20738223) ; 宮崎 祐輔 京都大学, 工学研究科, 助教 (10847320)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 古紙 / 微細化加工 / 高含水泥土 / セルロース / 地盤の水分分布

Outline of Final Research Achievements

In this study, various experiments were conducted to elucidate the mechanism of treating high water content mud with fine shredded paper and to clarify the changes in the physical and mechanical properties of the treated mud. As a result, it was confirmed that the shear strength of the mud increased and the physical and mechanical properties of the mud changed significantly after the addition of fine shredded paper. Furthermore, when the treated mud was reused as a geomaterial, it was found that the mud showed tenacious deformation performance when the fine shredded paper was used in combination with cement.

Free Research Field

地盤工学

Academic Significance and Societal Importance of the Research Achievements

本研究の最終目標は，古紙を微細化加工した粉体を用いて高含水泥土を即座に処理する技術を開発し，ため池やダムの浚渫・建設泥土処理・地盤災害復旧を変革することである．本技術を用いることで，特別な機械を用いることなく，即座に泥土の流動性を低下させることが可能となる．本研究を通じて，古紙微細粉体における処理メカニズムを詳しく分析できた他，処理泥土を再利用する際の地盤材料としての特性を調べることができた．