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1995 Fiscal Year Final Research Report Summary

Improving Durability and Prediction of Service life of Concrete Structure in Cold Sea Environment.

Research Project

Project/Area Number 06650491
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 土木材料・力学一般
Research InstitutionKitami Institute of Technology

Principal Investigator

AYUTA Koichi  Kitami institute of Technology, Civil Engineering, Professor, 工学部, 教授 (90003186)

Co-Investigator(Kenkyū-buntansha) SAKURAI Hiroshi  Kitami institute of Technology, Civil Engineering, Associate Professor, 工学部, 助教授 (80187088)
Project Period (FY) 1994 – 1995
KeywordsMarine concrete / Frost resistance / Scaling / Service year / Reliability analysis / Air-content / Blended cement / Freeze-thaw
Research Abstract

I.Study on improving durability
The main results are as follows :
(1) Scaling of concrete with air-content 8% was controlled in tidal range and splash zone.
(2) Concrete units used with (1) Ordinary Portland Cement (2) B types of Portland fly ash cement and (3) Ordinary Portland cement added with 15% silica fume have greater scaling resistance.
(3) The case of lower water cement ratio and early strength cement can controll scaling of concrete because the strength of concrete in the beginning of freeze-thaw is important factor.
II.Prediction of Service life of concrete structure in cold sea environment
The purpose of this study is to examine deterioration prediction of concrete structure by non-liner exponential function and reliability function. The data of RC model specimens during rapid freeze-thaw tests and exposure tests, large specimens during exposure tests at Okhotsk shoreline, and mortal specimens during tensile strength test were analyzed. The analysis results are able to predict the reaching time to a level of deterioration quantitatively.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 鮎田耕一: "寒冷地海洋暴露コンクリートの剥離抵抗性評価" セメント・コンクリート論文集. 49. 662-667 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鮎田耕一: "寒冷地における暴露試験による干満帯コンクリートのスケーリング防止対策の検討" 寒地技術論文報告集. 11. 64-68 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鮎田耕一: "積雪寒冷地の海岸・港湾コンクリート構造物の剥離抵抗性評価" 寒地技術論文報告集. 11. 74-78 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鮎田耕一: "寒冷地海洋環境下のコンクリートの経年劣化評価" 寒地技術論文報告集. 10. 341-347 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. SAKURAI: "Study of 8000 Cycles Freezing and Thawing Tests in Air by RC Model Specimen Using Non-linear Exponential Function Models" 北見工業大学研究報告. 27第1号. 1-8 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. SAKURAI: "Experimental Study on the Deteriofation Prediction of Concrete Structure by Reliability Theory" 北見工業大学研究報告. 27第2号. 53-64 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Koichi AYUTA et.al: "SCALING RESISTANCE OF CONCRETE EXPOSED SEA ENVIRONMENT" PROCEEDINGS OF CEMENT AND CONCRETE. Vol.49. 662-667 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Koichi AYUTA et.al: "Studies on Scaling Resistance of Splash Zone by Exposure Tests in Cold Regions" PROCEEDINGS OF '95 COLD REGION TECHNOLOGY CONFERENCE. Vol.11. 64-68 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Koichi AYUTA et.al: "Scaling Resistance of Marine Concrete Exposed to Cold Regions" PROCEEDINGS OF '95 COLD REGION TECHNOLOGY CONFERENCE. Vol.11. 74-78 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Koichi AYUTA et.al: "Scaling of Concrete Exposed to the Ice Covered Sea" PROCEEDINGS OF '94 COLD REGION TECHNOLOGY CONFERENCE. Vol.10. 341-347 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hiroshi SAKURAI et.al: "Study of 8000 Cycles Freezing and Thawing Tests in Air by RC Model Specimen Using Non-liner Exponential Function Models" MEMOIRS OF THE KITAMI INSTITUTE OF TECHNOLOGY. Vol.27 No.1. 1-8 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hiroshi SAKURAI et.al: "Experimental Study on Deterioration Prediction of Concrete Structure by Reliability Theory" MEMOIRS OF THE KITAMI INSTITUTE OF TECHNOLOGY. Vol.27 No.2. 53-64 (1995)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1997-03-04  

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