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Development of Reaction Acceleration Technology for Blast Furnace Slag and Fly Ash Cement Concrete

Research Project

Project/Area Number 21K04349
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 23010:Building structures and materials-related
Research InstitutionHokkaido University

Principal Investigator

Kurumisawa Kiyofumi  北海道大学, 工学研究院, 准教授 (40374574)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords反応促進 / 高炉スラグ微粉末 / フライアッシュ / CO2排出 / 無機塩 / 硫酸ナトリウム / 高炉スラグ / 微細構造 / CO2排出削減 / イオン移動度 / 溶解度
Outline of Research at the Start

混合セメントコンクリートの初期反応を活性化させ強度発現を促す混和剤の開発が求められている。そこで本研究では混合セメント中の高炉スラグ微粉末やフライアッシュの初期反応を活性化させる硬化促進剤の開発を行う。セメントの初期反応を活性化させる硬化促進剤はすでに市販されているが高炉スラグ微粉末やフライアッシュの硬化促進剤はほとんどなく、本研究では無機塩と有機物を組み合わせその開発を行う。さらに硬化促進剤の混和材への作用メカニズムを固体NMRを用いて微視的視点から明らかにし、硬化促進剤を用いた混合セメントコンクリートの耐久性能を実用化のために明らかにする。

Outline of Final Research Achievements

The objective of this study was to develop a reaction accelerator that enables the use of large quantities of supplemental materials to replace cement in order to reduce CO2 emissions. As a result, the initial reaction of blast furnace slag and fly ash with calcium hydroxide as an activator was accelerated by the addition of sodium sulfate. It was also clarified that the addition of sodium sulfate promoted the reaction and strength development of the hardened cement paste when it was mixed with cement. On the other hand, the addition of sodium sulfate promoted the initial reaction and strength development, but the strength development after 28 days of age was not so high. This may be due to the formation of a large amount of reaction products in the early stage. It was found that the acceleration of the initial reaction was dependent on ion mobility and solubility.

Academic Significance and Societal Importance of the Research Achievements

建設業界におけるCO2排出削減のためにセメントの利用を低減させるために高炉スラグやフライアッシュによるセメントの置換がさらに必要であり、それを実現するためには初期の強度発現を改善することが必要であり、本研究では反応促進剤として硫酸ナトリウムの添加が有効であること明らかにした。また、その促進メカニズムはイオン移動度が高い陰イオンが有効であり、さらに無機塩の溶解度が重要であることを明らかにした。今後この知見を活かしてさらに有効な促進剤の開発が望まれる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (21 results)

All 2024 2023 2022 2021

All Journal Article (9 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 9 results,  Open Access: 2 results) Presentation (12 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] EFFECT OF TEMPERATURE ON REACTION OF BLAST FURNACE SLAG CEMENT WITH CALCIUM NITRITE2024

    • Author(s)
      KURUMISAWA Kiyofumi
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 77 Issue: 1 Pages: 189-196

    • DOI

      10.14250/cement.77.189

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2024-03-29
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] INVESTIGATION OF FREEZE-THAW ACTION ON CONCRETE WITH SEVERAL CEMENT TYPES2024

    • Author(s)
      HANAOKA Atsuhiro、KURUMISAWA Kiyofumi
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 77 Issue: 1 Pages: 369-376

    • DOI

      10.14250/cement.77.369

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2024-03-29
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] CHLORIDE ADSORPTION AND DIFFUSIVITY OF BLAST FURNANCE SLAG CEMENT USING CALCIUM NITRITE2023

    • Author(s)
      KONDO Yuki、KURUMISAWA Kiyofumi
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 76 Issue: 1 Pages: 187-192

    • DOI

      10.14250/cement.76.187

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2023-03-31
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of curing temperatures and additional activators on chloride ingress and its induced mineralogical alteration of ground granulated blast furnace slag activated by Ca(OH)22023

    • Author(s)
      Qi Zhai、Zuo Yibing、Kurumisawa Kiyofumi、Lang Aoran
    • Journal Title

      Cement and Concrete Composites

      Volume: 141 Pages: 105153-105153

    • DOI

      10.1016/j.cemconcomp.2023.105153

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A comparative study of alkanolamines and inorganic additives on the microstructure development of blast furnace slag blended cement at low curing temperature2023

    • Author(s)
      Zhai Qi、Kurumisawa Kiyofumi、Moon Juhyuk
    • Journal Title

      Construction and Building Materials

      Volume: 408 Pages: 133779-133779

    • DOI

      10.1016/j.conbuildmat.2023.133779

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] EFFECT OF INROGANIC SALTS ON PROPERTIES OF BLAST FURNACE SLAG COMPOSITE2022

    • Author(s)
      KURUMISAWA Kiyofumi
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 75 Issue: 1 Pages: 174-180

    • DOI

      10.14250/cement.75.174

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2022-03-31
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Mechanisms of inorganic salts on Ca(OH)2-activated ground granulated blast-furnace slag curing under different temperatures2022

    • Author(s)
      Zhai Qi、Kurumisawa Kiyofumi
    • Journal Title

      Construction and Building Materials

      Volume: 338 Pages: 127637-127637

    • DOI

      10.1016/j.conbuildmat.2022.127637

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effects of cation in sulfate chloride and nitrite on Ca(OH)2 activated ground granulated blast-furnace slag2022

    • Author(s)
      Zhai Qi、Kurumisawa Kiyofumi
    • Journal Title

      Cement and Concrete Composites

      Volume: 133 Pages: 104648-104648

    • DOI

      10.1016/j.cemconcomp.2022.104648

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of accelerators on Ca(OH)2 activated ground granulated blast-furnace slag at low curing temperature2021

    • Author(s)
      Zhai Qi、Kurumisawa Kiyofumi
    • Journal Title

      Cement and Concrete Composites

      Volume: 124 Pages: 104272-104272

    • DOI

      10.1016/j.cemconcomp.2021.104272

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] いくつかのセメント種を用いたセメント硬化体に及ぼす凍結融解作用の実験的検討2023

    • Author(s)
      花岡 温広、胡桃澤清文
    • Organizer
      第77回セメント技術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 亜硝酸カルシウムを使用した高炉セメント硬化体の温度依存性2023

    • Author(s)
      胡桃澤清文
    • Organizer
      第77回セメント技術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Impact of triethanolamine (TEA) on the hydration of ground granulated blast furnace (GGBFS) blended cement,2023

    • Author(s)
      Qi Zhai、Kiyofumi Kurumisawa
    • Organizer
      第77回セメント技術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Impact of curing temperature and additional activators on the hydration of Ca(OH)2 activated GGBFS2022

    • Author(s)
      Zhai Qi、胡桃澤 清文
    • Organizer
      第76回セメント技術大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 亜硝酸カルシウムを用いた高炉セメント硬化体の塩分吸着及び拡散性能2022

    • Author(s)
      近藤 勇樹、胡桃澤 清文
    • Organizer
      第76回セメント技術大会
    • Related Report
      2022 Research-status Report
  • [Presentation] The coupling effects of curing temperature and additional activators on the strength development of Ca (OH)2 activated blast furnace slag2022

    • Author(s)
      Qi Zhai, Kiyofumi Kurumisawa
    • Organizer
      International conference on regeneration and conservation of structures (ICRCS)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of accelerators on diffusivity and drying shrinkage of BFS composite2022

    • Author(s)
      胡桃澤清文
    • Organizer
      International conference on regeneration and conservation of structures (ICRCS)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 亜硝酸カルシウムを添加したコンクリートの物性2022

    • Author(s)
      胡桃澤清文
    • Organizer
      日本建築学会学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] フライアッシューCa(OH)2固化体の強度発現に及ぼす無機塩類の影響2021

    • Author(s)
      郎 傲然、胡桃澤 清文
    • Organizer
      資源・素材学会(札幌)
    • Related Report
      2021 Research-status Report
  • [Presentation] 高炉スラグ固化体の拡散性能に及ぼす無機塩の影響2021

    • Author(s)
      胡桃澤清文
    • Organizer
      第75回セメント技術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Effect of some salts on strength development of BFS paste2021

    • Author(s)
      Yuya Yamada、ZHAI QI、Hiroaki Omatsu、Kiyofumi Kurumisawa
    • Organizer
      第75回セメント技術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] いくつかの無機塩が高炉スラグ固化体の乾燥収縮に与える影響2021

    • Author(s)
      胡桃澤清文
    • Organizer
      日本建築学会学術講演会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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