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Material design of recycled cement composedof highly reactive B-C2S, achieving significant CO2 reduction

Research Project

Project/Area Number 19H02211
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 22010:Civil engineering material, execution and construction management-related
Research InstitutionNiigata University

Principal Investigator

SAITO TSUYOSHI  新潟大学, 自然科学系, 准教授 (90452010)

Co-Investigator(Kenkyū-buntansha) 佐伯 竜彦  新潟大学, 自然科学系, 教授 (90215575)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥13,520,000 (Direct Cost: ¥10,400,000、Indirect Cost: ¥3,120,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥11,830,000 (Direct Cost: ¥9,100,000、Indirect Cost: ¥2,730,000)
Keywords再生可能セメント / 高Ca/Si比 / C-A-S-H / 高活性Ca2SiO4、 / 結晶子径 / 錯体重合法 / 27Al MAS NMR、 / 29Si MAS NMR / 再生セメント / トバモライト / 低圧水蒸気吸着 / 等量微分吸着熱 / 赤外吸収スペクトル / 高Ca/Si 比C-S-H / 高活性β-C2S / 水蒸気吸着等温線 / 吸着熱 / Ca/Si 比 / C-S-H / 比表面積 / β-C2S / Far-FT-IR / Ca/Si比 / FT-IR / 高Ca/Si比C-S-H / CO2削減
Outline of Research at the Start

本研究は,発生CO2,焼成エネルギーおよび天然資源を同時かつ大幅に削減することが可能な「高活性β-C2Sを主原料とした再生可能なセメント(再生セメント)」の材料設計思想を提案し,その実現性を検証するものである.具体的には,①β-C2Sと同じC/S比であるC/S比=2.0の非晶質C-S-Hを合成すること,②合成したC/S比=2.0の非晶質C-S-Hを焼成し,高活性β-C2Sを得ること,③得られた高活性β-C2Sの水和反応機構を解明し,水和後にはCHが共存せず,かつ①で合成したものと同様のC/S比=2.0の非晶質C-S-Hのみが生成する「再生セメント」設計の確立を行うことを目的としている.

Outline of Final Research Achievements

This paper investigates the Al substitution properties in C-S-H with a Ca/Si ratio of 2.0 obtained by hydrating highly reactive belite, and the regeneration of belite by re-calcinating. The results show that Al was incorporated bridging site in C-S-H with a Ca/Si ratio of 2.0 as 4- and 6-coordinated Al and that the basal spacing increased with an increase in the amount of substitution. On the other hand, belite was regenerated from C-A-S-H with a high Ca/Si ratio by calcinating at 800 degrees C. The crystallite diameter and specific surface area of the regenerated belite were similar to those of the pre-hydrated belite, indicating that the formation of α’-C2S was predominant over β-C2S with increasing Al substitution. These results indicate that recyclable cement may sustain the regeneration cycle even if its key element, C-S-H with a Ca/Si ratio of 2.0, is altered by Al.

Academic Significance and Societal Importance of the Research Achievements

骨材等に含まれるAlが、本再生セメントシステムに取り込まれた場合でも、再生セメントサイクルを維持できることが示されたことは、実用的価値が示されたものといえる。

Report

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

    (19 results)

All 2022 2021 2020 2019

All Journal Article (18 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 18 results,  Open Access: 9 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] STRUCTURAL EVALUATION OF HIGH Ca/Si RATIO C-S-H BY THE ISOSTERIC HEAT OF WATER ADSORPTION CALCULATED FROM LOW-PRESSURE WATER VAPOR ADSORPTION ISOTHERMS2022

    • Author(s)
      斎藤 豪, 鈴木 一帆, 松井 久仁雄, 佐伯 竜彦
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 75 Issue: 1 Pages: 26-33

    • DOI

      10.14250/cement.75.26

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2022-03-31
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] STRUCTURAL EVALUATION OF 1.1nm TOBERMORITE BY THE ISOSTERIC HEAT OF WATER ADSORPTION CALCULATED FROM LOW-PRESSURE WATER VAPOR ADSORPTION ISOTHERMS2022

    • Author(s)
      鈴木 一帆, 斎藤 豪, 松井 久仁雄, 佐伯 竜彦
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 75 Issue: 1 Pages: 2-9

    • DOI

      10.14250/cement.75.2

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2022-03-31
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] EFFECT OF CURING TEMPERATURE ON THE CRYSTAL STRUCTURES OF C-(A)-S-H and Al-TOBERMORITE2022

    • Author(s)
      斎藤 豪, 三森 耀介, 鈴木 一帆, 松井 久仁雄
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 75 Issue: 1 Pages: 10-17

    • DOI

      10.14250/cement.75.10

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2022-03-31
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] STUDY ABOUT C-S-H WITH HIGH C/S RATIO SYNTHESIZED BY COMPLEX POLYMERIZATION METHOD2021

    • Author(s)
      IGAWA Yoshitaka、SAITO Tsuyoshi、SUZUKI Kazuho、HOSOKAWA Yoshifumi
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 74 Issue: 1 Pages: 325-332

    • DOI

      10.14250/cement.74.325

    • NAID

      130008009181

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2021-03-31
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] EFFECT OF DEFFERENCES OF Al OR CURING DEGREE ON CRYSTAL OF TOBERMORITE2021

    • Author(s)
      MITSUMORI Yosuke、SAITO Tsuyoshi、SAEKI Tatsuhiko、SUZUKI Kazuho
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 74 Issue: 1 Pages: 2-8

    • DOI

      10.14250/cement.74.2

    • NAID

      130008009219

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2021-03-31
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] HYDRATION REACTION AND CONSIDERATIONS FOR SOILS TREATED BY BLAST-FURNACE SLAG, ANHYDRITE AND LIME STONE POWDER2021

    • Author(s)
      INO Takumi、SAITO Tsuyoshi、SUZUKI Kazuho、SAEKI Tatsuhiko
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 74 Issue: 1 Pages: 349-356

    • DOI

      10.14250/cement.74.349

    • NAID

      130008009171

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2021-03-31
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] THE EFFECTS OF SODIUM CHLORIDE ON THE HYDRATION MECHANISM OF THE HIGHLY REACTIVE <i>β</i>-2CaO・SiO<sub>2</sub>2021

    • Author(s)
      SUZUKI Kazuho、SAITO Tsuyoshi、IGAWA Yoshitaka、HOSOKAWA Yoshifumi
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 74 Issue: 1 Pages: 357-364

    • DOI

      10.14250/cement.74.357

    • NAID

      130008009174

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2021-03-31
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] STUDIES ON SYNTHESIS OF HIGHLY REACTIVE <i>β</i>-C<sub>2</sub>S BY LOW-TEMPERATURE HEATING OF CARBONATED C-S-H WITH Ca/Si=2.0 AND UTILIZATION OF CARBONATION REACTION2021

    • Author(s)
      KONDO Shota、SAITO Tsuyoshi、SUZUKI Kazuho、HOSOKAWA Yoshifumi
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 74 Issue: 1 Pages: 365-372

    • DOI

      10.14250/cement.74.365

    • NAID

      130008009170

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2021-03-31
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] FUNDAMENTAL STUDY ON HIGHLY REACTIVE <i>β</i>-C<sub>2</sub>S SYNTHESIZED BY COMPLEX POLYMERIZATION METHOD AND APPLICATION TO CONCRETE2021

    • Author(s)
      KONAKAWA Takumi、SAITO Tsuyoshi、SUZUKI Kazuho、SAEKI Tatsuhiko
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 74 Issue: 1 Pages: 373-379

    • DOI

      10.14250/cement.74.373

    • NAID

      130008009173

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2021-03-31
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] INVESTIGATION OF THE STRUCTURE OF Mg AND ALKALI-ADDED 1.4nm TOBERMORITE DRIED UNDER VARIOUS CONDITIONS2020

    • Author(s)
      加藤福將, 斎藤豪, 松井久仁雄, 佐伯竜彦
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 73 Issue: 1 Pages: 10-17

    • DOI

      10.14250/cement.73.10

    • NAID

      130007822410

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2020-03-31
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] HYDRATION STUDY OF β-C<sub>2</sub>S WITH HIGH SPECIFIC SURFACE AREA SYNTHESIZED BY COMPLEX POLYMERIZATION METHOD2020

    • Author(s)
      井川義貴, 斎藤豪, 鈴木一帆, 細川佳史
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 73 Issue: 1 Pages: 363-370

    • DOI

      10.14250/cement.73.363

    • NAID

      130007822418

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2020-03-31
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] EFFECTS OF MIXING AMOUNT OF MONOCARBONATE AND CURING TEMPERATURE ON THAUMASITE AND ETTRINGITE FORMATION2020

    • Author(s)
      林良祐, 斎藤豪, 佐藤賢之介, 佐伯竜彦
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 73 Issue: 1 Pages: 18-25

    • DOI

      10.14250/cement.73.18

    • NAID

      130007822460

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2020-03-31
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] EFFECT OF Al AND Mg ON FORMATION AND CRYSTAL OF TOBERMORITE2020

    • Author(s)
      三森耀介, 斎藤豪, 加藤福將, 佐伯竜彦
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 73 Issue: 1 Pages: 2-9

    • DOI

      10.14250/cement.73.2

    • NAID

      130007822461

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2020-03-31
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] STUDIES ON SYNTHESIS OF C-S-H BY DOUBLE COMPOSITION METHOD WITH CALCIUM CHLORIDE, AND RECYCLE SYSTEM2020

    • Author(s)
      鈴木一帆, 斎藤豪, 井川義貴, 細川佳史
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 73 Issue: 1 Pages: 421-428

    • DOI

      10.14250/cement.73.421

    • NAID

      130007822429

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2020-03-31
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] EFFECT OF RELATIVE HUMIDITY ON CARBONATION SHRINKAGE AND HYDRATION PRODUCT OF CEMENT PASTE2020

    • Author(s)
      須田裕哉,富山潤,斎藤豪,佐伯竜彦
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 73 Issue: 1 Pages: 71-78

    • DOI

      10.14250/cement.73.71

    • NAID

      130007822447

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2020-03-31
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] FUNDAMENTAL STUDY ON PRODUCTION METHOD OF CONCRETE BY ADDITION OF SILICA FUME SLURRY TO TRUCK AGITATOR2020

    • Author(s)
      井貝武史, 佐伯竜彦, 斎藤豪, RIDHWAN ANAS
    • Journal Title

      Cement Science and Concrete Technology

      Volume: 73 Issue: 1 Pages: 459-464

    • DOI

      10.14250/cement.73.459

    • NAID

      130007822438

    • ISSN
      0916-3182, 2187-3313
    • Year and Date
      2020-03-31
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Relationship Between Expansion Characteristics of Heat-Cured Mortars During Water Curing and Origins of Ettringite Formation2019

    • Author(s)
      Kennosuke Sato, Tsuyoshi Saito, Michio Kikuchi, Tatsuhiko Saeki
    • Journal Title

      Journal of Advanced Concrete Technology

      Volume: 17 Issue: 5 Pages: 260-268

    • DOI

      10.3151/jact.17.260

    • NAID

      130007655309

    • ISSN
      1346-8014, 1347-3913
    • Year and Date
      2019-05-28
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of Dry Condition and Temperature History on Crystal Structure of Carbonate Ettringite2019

    • Author(s)
      野澤里渚子,斎藤豪,佐藤賢之介,佐伯竜彦
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 68 Issue: 1 Pages: 55-61

    • DOI

      10.2472/jsms.68.55

    • NAID

      130007563373

    • ISSN
      0514-5163, 1880-7488
    • Year and Date
      2019-01-15
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Patent(Industrial Property Rights)] ケイ酸カルシウム水和物を含有する成形体の製造方法及び成形体2019

    • Inventor(s)
      斎藤豪
    • Industrial Property Rights Holder
      斎藤豪
    • Industrial Property Rights Type
      特許
    • Filing Date
      2019
    • Acquisition Date
      2021
    • Related Report
      2021 Annual Research Report

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

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