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2013 Fiscal Year Final Research Report

Study on the Properties of Shrinkage Cracking of Concrete Containing Various Mineral Admixtures Assumed on Site

Research Project

  • PDF
Project/Area Number 24760456
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Building structures/materials
Research InstitutionOita University

Principal Investigator

OTANI Toshihiro  大分大学, 工学部, 准教授 (00315318)

Project Period (FY) 2012-04-01 – 2014-03-31
Keywordsコンクリート / 収縮ひび割れ / 混和材 / フライアッシュ / 高炉スラグ微粉末
Research Abstract

The purpose of this study is to clarify the cracking behavior of concrete containing blast furnace slag and/or fly ash in case of same strength at 28 days through the compressive strength test, the embedded reinforcing bar test, the autogeneous shrinkage test and the drying shrinkage test.
As a results showed that the influence of admixtures on the autogeneous and drying shrinkage strain of concretes is small. And concrete with blast furnace slag cracked at earlier ages than plain concrete, in spite of concrete with fly ash cracked at the same age. Furthermore, the ratio of restrained stress to splitting tensile strength of concrete at the cracking was 0.6 to 0.7 regardless of containing admixtures.

  • Research Products

    (3 results)

All 2014 2013

All Presentation (3 results)

  • [Presentation] 鉄筋埋設ひび割れ試験における混和材混入コンクリートの収縮ひび割れ性状2014

    • Author(s)
      首藤陽介
    • Place of Presentation
      神戸大学
    • Year and Date
      20140912-14
  • [Presentation] 改質フライアッシュおよび細骨材種類がモルタルの収縮ひび割れ特性に及ぼす影響に関する研究2014

    • Author(s)
      三島剛
    • Organizer
      日本建築学会九州支部研究報告会
    • Place of Presentation
      佐賀大学
    • Year and Date
      2014-03-02
  • [Presentation] フライアッシュモルタルの乾燥収縮ひび割れ特性2013

    • Author(s)
      上田賢司
    • Organizer
      日本建築学会大会
    • Place of Presentation
      北海道大学
    • Year and Date
      20130830-0901

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Published: 2015-06-25  

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