Mix Performance and Mechanical Properties of High Strength Concrete using Blast Furnace Slag Fine Aggregate

高炉スラグ細骨材を使用した高強度コンクリートの調合と力学特性

In this study, mix performance and mechanical properties of concrete using blast furnace slag fine aggregate were studied by experiment. As ordinary strength concrete, it is necessary that the water content and the chemical admixture content of concrete using blast furnace slag fine aggregate would be increased than river sand concrete in order to gain uniform workability of fresh concrete. However, the mix performance of high strength concrete using blast furnace slag fine aggregate is same as high strength concrete using river sand by using chemical admixture. As same as concrete using river sand, the strength of concrete using blast furnace slag fine aggregate will increase with decrease of water-cement ratio and the compressive strength can exceed 100N/mm². At early age, the compressive strength of concrete using blast furnace slag fine aggregate is lower than river sand concrete. Under long term curing, the increasing rate of compressive strength of ordinary strength concrete using blast furnace slag fine aggregate will be higher than river sand concrete, but this increasing rate will be lower when the strength of concrete was high. Young's modulus of concrete using blast furnace slag fine aggregate is greater than concrete using river sand, and Young's modulus of concrete using mixed fine aggregate is middle of concrete using river sand and using blast furnace slag. The drying shrinkage of concrete that used blast furnace slag as fine aggregate is less than concrete that used natural river sand as fine aggregate when the mix proportion condition of concrete was identical.本報告は，高炉スラグ細骨材を使用した高強度コンクリートの調合と力学特性に関する実験結果をまとめたものである。高炉スラグ細骨材を使用したコンクリートは，川砂コンクリートと同じワーカビリティーを得るために，普通強度レベルの場合は単位水量を増加させる必要があった。しかし，高強度レベルの場合は，高炉スラグ細骨材コンクリートも川砂の場合と大差がない。高炉スラグ細骨材を使用したコンクリートは，水セメント比を小さくすると川砂の場合と同様に強度が増大し，100N/mm²以上の圧縮強度が得られる。高炉スラグ細骨材コンクリートは，普通強度レベルでは材齢28日の圧縮強度は川砂コンクリートに比較して低く，長期材齢において川砂コンクリートより高くなる傾向を示すが，高強度レベルでは，長期材齢においても川砂コンクリートより高くなることはなかった。高炉スラグ細骨材コンクリートのヤング係数は，圧縮強度が同じ場合，川砂コンクリートより大きくなり，乾燥収縮は川砂を使用したコンクリートより若干小さくなる。

• Record URL:
  https://doi.org/10.3151/coj.51.165
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=Mix+Performance+and+Mechanical+Properties+of+High+Strength+Concrete+using+Blast+Furnace+Slag+Fine+Aggregate&author=D.+Shi&author=Y.+Masuda&author=M.+Abe&author=T.+Kage&publication_year=2013
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03871061
• Authors:
  • Shi, D. S.
  • Masuda, Y
  • Abe, M
  • Kage, T
• Publication Date: 2013

Language

• English
• Japanese

Media Info

• Media Type: Digital/other
• Features: References;
• Pagination: pp 165-172
• Serial:
  • Concrete Journal
  • Volume: 51
  • Issue Number: 2
  • Publisher: Japan Concrete Institute
  • ISSN: 0387-1061
  • EISSN: 2186-2753
  • Serial URL: https://www.jstage.jst.go.jp/browse/coj

Subject/Index Terms

• TRT Terms: Compressive strength; Concrete; Drying; Fine aggregates; High strength; Mechanical properties; Shrinkage; Slag; Young's modulus
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01514289
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Feb 12 2014 9:42AM