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Development of ceramics using recycled aggregate by spark plasma sintering

Research Project

Project/Area Number 19K05100
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 26050:Material processing and microstructure control-related
Research InstitutionUniversity of the Ryukyus

Principal Investigator

Kanda Yasuyuki  琉球大学, 工学部, 准教授 (10468069)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords廃コンクリート / リサイクル / セラミックス / 放電プラズマ焼結法 / 機械的性質 / 再生骨材
Outline of Research at the Start

わが国における産業廃棄物の廃コンクリートは,コンクリート構造物の経年劣化や機能更新による解体作業に伴い年間3000万トン発生している.廃コンクリートを粉砕した再生骨材は,路盤材へのリサイクル以外にも,コンクリート内への再混合が試みられているが,骨材周囲に付着したセメント分の除去が難しくコンクリートの品質が低下する問題を抱えている.本研究では,再生骨材の新しいリサイクル法として,放電プラズマ焼結法により微粉砕した再生骨材を原料粉末に用いたセラミックスを開発する.研究では,セラミックスの機械的性質が高まる放電プラズマ焼結条件とセラミックスの内部構造特性を解明する.

Outline of Final Research Achievements

This study investigated the fabrication of ceramics using recycled aggregate powder from milled Okinawan waste concrete, which is a new recycling method for waste concrete. To fabricate high-strength ceramics, we employed a spark plasma sintering method. Three types of ceramics were prepared using 1) recycled fine aggregate powder, 2) recycled coarse aggregate powder, and 3) recycled fine aggregate powder and fly ash. The flexural strength of the three ceramics was higher than 35 MPa, which met the requirements of ISO 13006 standards. In addition, it was determined that fly ash plays a major role as reinforcement particles in ceramics that use recycled fine aggregate powder.

Academic Significance and Societal Importance of the Research Achievements

本研究では,廃コンクリートを砕いた再生骨材は粉末化することで,セラミックス原料としてリサイクル可能であることを示した.この結果は,循環型社会の構築や最終処分場の延命に資するため,社会的意義は高いといえる.また,再生骨材の粉末をセラミックス原料として利用した環境調和型材料の成形加工例を示したことは,材料加工学分野における学術的意義があると考えられる.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (8 results)

All 2022 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] 廃コンクリート粉末を用いたゼオライトの合成2022

    • Author(s)
      原田哲利,神田康行
    • Journal Title

      粉体および粉末冶金

      Volume: 69

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Synthesis of zeolites from calcareous waste concrete powder2022

    • Author(s)
      Kanda Yasuyuki、Harada Satori
    • Journal Title

      Results in Materials

      Volume: 13 Pages: 100250-100250

    • DOI

      10.1016/j.rinma.2021.100250

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ceramics based on concrete wastes prepared by spark plasma sintering2021

    • Author(s)
      Abass Mohammed、Kanda Yasuyuki
    • Journal Title

      Processing and Application of Ceramics

      Volume: 15 Issue: 1 Pages: 100-109

    • DOI

      10.2298/pac2101100a

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effective utilization of recycled fine aggregate powder as reinforcement particles in polyethylene composite2020

    • Author(s)
      Kanda Yasuyuki、Abass Mohammed
    • Journal Title

      Polymers and Polymer Composites

      Volume: - Issue: 7 Pages: 939-952

    • DOI

      10.1177/0967391120951381

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 再生骨材粉末を用いたゼオライト合成に関する基礎的研究2021

    • Author(s)
      原田哲利,神田康行
    • Organizer
      粉体粉末冶金協会講演概要集2021年度春季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 放電プラズマ焼結法による石灰質廃コンクリート粉末を用いたセラミックス作製の基礎的検討2021

    • Author(s)
      神田康行
    • Organizer
      粉体粉末冶金協会講演概要集2021年度春季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Fabrication of Spark Plasma Sintered Body using Recycled Fine Aggregate Powder2019

    • Author(s)
      Mohammed ABASS and Yasuyuki KANDA
    • Organizer
      The 13th Pacific Rim Conference of Ceramic Societies (PACRIM 13)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 再生細骨材粉末を用いた放電プラズマ焼結の基礎的検討2019

    • Author(s)
      神田康行,Mohammed ABASS
    • Organizer
      粉体粉末冶金協会講演概要集2019年度秋季大会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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