NONDESTRUCTIVE EVALUATION OF FRESH GROUTING PERFORMANCE IN PRESTRESSED CONCRETE MEMBERS BY IMPACT ECHO

• TOMITA Yoshio

  JAPAN SOCIETY OF CIVIL ENGINEERS

• IWANAMI Mitsuyasu

  JAPAN SOCIETY OF CIVIL ENGINEERS

• OTSUKI Nobuaki

  JAPAN SOCIETY OF CIVIL ENGINEERS

Bibliographic Information

Other Title

• 衝撃弾性波を用いたPCフレッシュグラウトの充填性評価に関する研究
• ショウゲキ ダンセイハ オ モチイタ PC フレッシュグラウト ノ ジュウテンセイ ヒョウカ ニ カンスル ケンキュウ

Abstract

In this study, nondestructive evaluation method for grouting performance in prestressed concrete (PC) members was investigated using an impact echo technique. PC bar was modeled as one-dimensional vibration system consisting of springs and dampers. Through the modal analysis, it was found that the grouting condition of fresh cement-paste was related to the damping characteristics of the system. From the experimental results, it was shown that the peak value in the frequency spectrum of the vibration of the PC bar decreased due to filled cement-paste in the sheath of PC beam. It was also confirmed that this method was applicable to practical use of full-sized PC slabs.

Journal

• Doboku Gakkai Ronbunshu

  Doboku Gakkai Ronbunshu 2000 (648), 127-135, 2000-05-20

  Japan Society of Civil Engineers

Keywords

• fresh grout
• impact echo
• modal analysis
• power spectrum
• damping

Details

• CRID: 1390001205310575104
• NII Article ID: 130003983536
• NII Article ID: 10008218570
• NII Article ID: 10004443947
• NII Book ID: AN10014020
• DOI: 10.2208/jscej.2000.648_127
• ISSN: 18827187
• ISSN: 02897806
• NDL BIB ID: 5356845
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5356845
• Web Site: https://www.jstage.jst.go.jp/article/jscej1984/2000/648/2000_648_127/_pdf
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed