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EFFECTIVE UTILIZATION OF HIGH SLAG CONTENT CONCRETE

Research Project

Project/Area Number 06650505
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 土木材料・力学一般
Research InstitutionWAKAYAMA NATIONAL COLLEGE OF TECHNOLOGY

Principal Investigator

TOGAWA Kazuo  WAKAYAMA NATIONAL COLLEGE OF TECHNOLOGY, DEPARTMENT OF CIVIL ENGINEERING,ASSOCIATE PROFESSOR, 環境都市工学科, 教授 (80043537)

Co-Investigator(Kenkyū-buntansha) NAKAMOTO Junji  WAKAYAMA NATIONAL COLLEGE OF TECHNOLOGY, DEPARTMENT OF CIVIL ENGINEERING,PROFESS, 環境都市工学科, 助教授 (70043552)
Project Period (FY) 1994 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1996: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1995: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1994: ¥700,000 (Direct Cost: ¥700,000)
KeywordsBlast furnace slag / Slag content / Fineness of slag / Permeability / Hhydration / Durability / Shrinkage / Porosity / 置換率 / 粉末度 / 始発 / 終結 / ブリーディング / 水和 / 高炉スラグ微粉末 / 養生条件 / 強度特性 / クリープ / 凍結融解 / 強度発現 / 養生温度 / 超微粉砕スラグ / スラグ含有率
Research Abstract

It is essential that concrete structures should withstand the conditions for which it has been designed over a period of years. The lack of durability may be caused either by the environment to which the concrete is exposed. This paper describes the results of an experimental study carried out on basic properties of high slag content concrete which has large amounts of ground granulated blast furncace slag (GGBS). The maximum replacement of slag is 95% by weight of the total cementitious materials, and the fineness of slag are 404 and 1670 m^2/kg. So many tests for strength development, heat evolution, drying shrinkage, creep, autogenous shrinkage, freezing and thawing resistance, chemical attack resistance, carbonation and water permeability were carried out on a large number of concrete specimens.
The following conclusions can be drawn from this study.
1. Drying shrinkage of HSC concrete was less than of slag free concrete, and increased with increasing slag content.
2. Utilization of GGBS into concrete mixture gave rise enlargement of progress rate of autogenous shrikage regardless of AE concrete and SP concrete.
3. Slag content and duration of preiminary water curing show the significant influence on the carbonation rate of HSC concrete.
4. The vulnerability of concrete to sulfate attack can be reduced by using of GGBS as an ingredient of cement.
5. The water tightness of HSC concretes could be improved by utilizing the high fineness slag within the range of 1200m^2/kg, and also could be improved remarkably by utilizing an air entraining and high range water redicing admixture.
6. The water permeability of HSC concretes were closely related to the porosity over the certain threshold value of diameter rather than to the meam diameter of pores.
7. HSC concrete could have satisfactory high resistance to freezing and thawing by using AEHW agent, even if the slag content was 95%..

Report

(4 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • 1994 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] 中本純次: "高炉スラグ高含有コンクリートの強度発現特性におよぼす養生温度の影響" セメントコンクリート論文集. No.48. 358-363 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 中本純次: "超微粉砕高炉スラグを用いた高炉スラグ高含有コンクリートの中性化および強波特性" コンクリート工学年次論文報告集. Vol.17 No.1. 353-358 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 中本純次: "高炉スラグ高含有コンクリートの諸特性におよぼす各種養生条件の影響" セメントコンクリート論文集. No.49. 234-239 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Junji NAKAMOTO: "A STUDY OF STRENGTH DEVELOPMENT AND CARBONATION OF CONCRETE INCORPORATING HIGH VOLUME BLAST-FURNACE SLAG" Proceedings of Fifth CANMET/ACI International Conferece.1121-1140 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] J.NAKAMOTO,K.TOGAWA: "A study of strength development and carbonation of concrete incorporating high volume blast furnace slag" CANMET/ACI 5th International conference, Milwaukee. 1121-1140. (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] J.NAKAMOTO,K.TOGAWA,T.MIYAGAWA,M.Fujii: "Drying shrinkage and autogenous shrinkage of high slag content concrete" International conference on engineering Materials, Ottawa. (to be published). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] J.NAKAMOTO,K.TOGAWA,T.MIYAGAWA,M.Fujii: "A study on carbonation and sulfate attack resistance of High slag content concrete" CANMET/ACI 4th International conference on durability of concrete, Sidney. (to be published). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] J.NAKAMOTO,K.TOGAWA,T.MIYAGAWA,M.Fujii: "Water permeability of High slag content concrete" CANMET/ACI 6th International conference, Thailand. (to be published). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] J.NAKAMOTO,K.TOGAWA,T.MIYAGAWA,M.Fujii: "Freezing and thawing resistance of high blast-furnace slag content concrete" CANMET/ACI/JCI 4th International conference on recent advances in concrete technology, Tokushima. (to be published). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 中本純次: "高炉スラグ高含有コンクリートのクリープ・乾燥収縮特性に関する基礎的研究" セメント・コンクリート論文集. No.50. 204-209 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 中本純次: "高炉スラグ高含有コンクリートのブリーディングおよび凝結特性に関する研究" 平成8年度関西支部年次学術講演会講演概要. V-33-1-V-33-2 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 中本純次: "超微粉砕高炉スラグを用いた高炉スラグ高含有コンクリートの中性化および強度特性" コンクリート工学年次論文報告集. 17. 353-358 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 中本純次: "高炉スラグ高含有コンクリートの諸特性におよぼす各種養生条件の影響" セメント・コンクリート論文集. 49. 234-239 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 中本純次: "高炉スラグ高含有コンクリートの凍結融解抵抗性" 土木学会第50回年次学術講演概要集. V. 64-65 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 中本純次: "高炉スラグ高含有コンクリートの強度発現特性におよぼす養生温度の影響" セメント・コンクリート論文集. 48. 358-363 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Junji NAKAMOTO: "A STUDY OF STRENGTH DEVELOPMENT AND CARBONATION OF CONCRETE INCORPORATING HIGH VOLUME BLAST-FURNACE SLAG" Proceedings of Fith CANMET/ACI International Conference.(1995)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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