Development of New Non-Destructive Inspection Method for Defects of Concrete by Magnetostrictive Elastic Wave Input / Receiving Device

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K06173
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: Ritsumeikan University
• Principal Investigator: Shinya UCHIDA 立命館大学, 理工学部, 任期制講師 (70543461)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: コンクリート / 非破壊検査 / 弾性波 / 磁歪 / あと施工アンカーボルト / PCグラウト / RC床板 / 内部欠陥

Outline of Final Research Achievements

In this study, as defects of concrete, focused on three kinds of defects (1) post-installed anchor bolts, (2) PC grout filling condition, (3) horizontal crack in RC slab, it is aimed to develop "magnetostrictive elastic wave input / receiving device" suitable for this purpose and to establish a method for accurately evaluating defects.
As a result, it was clarified that defects can be appropriately evaluated from elastic wave propagation velocity, waveform amplitude and frequency characteristics measured by "magnetostrictive elastic wave input / reception device" developed in any subject.

Free Research Field

工学