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Article
The Use of GPR to Investigate the Effect of Steel Fiber Distribution on the Mechanical Behavior of FRC
Construction and Building Materials
  • Paola Machado Barreto Manhães
  • José Tavares Araruna Júnior
  • Genda Chen, Missouri University of Science and Technology
  • Neil Lennart Anderson, Missouri University of Science and Technology
  • Erik Valloti Pereira
  • Flávio de Andrade Silva
Abstract

The present work focuses on the steel fiber distribution in self-consolidating concrete short beams. The objective is to assess the feasibility of the ground penetrating radar (GPR) in evaluating the homogeneity of fibers within concrete materials, for use in testing laboratories to study the modes of placing and compaction employed for preparing specimens during quality control or material development. Self-consolidating concrete beams were cast, tested, and evaluated. A GPR survey employing a concrete scanning system with a shielded 1.2 GHz center frequency was performed on self-consolidating casted short beams just before a monotonic four-point bending test was carried out. After failure, a representative short beam was cut and the resulting slices were photographed to obtain the position and distribution of the steel fibers. Results were processed using dedicated software and an integrated analysis was accomplished. The digital and processed images correlated well with the GPR mappings in a single radar trace mode. In particular, the GPR amplitude provides information on the steel fiber density that was used as reinforcement in concrete specimens.

Department(s)
Civil, Architectural and Environmental Engineering
Second Department
Geosciences and Geological and Petroleum Engineering
Comments

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Grant None

Keywords and Phrases
  • GPR,
  • High-frequency antenna,
  • NDT,
  • Self-consolidating concrete,
  • Steel fiber
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2023 Elsevier, All rights reserved.
Publication Date
8-15-2022
Publication Date
15 Aug 2022
Citation Information
Paola Machado Barreto Manhães, José Tavares Araruna Júnior, Genda Chen, Neil Lennart Anderson, et al.. "The Use of GPR to Investigate the Effect of Steel Fiber Distribution on the Mechanical Behavior of FRC" Construction and Building Materials Vol. 344 (2022) ISSN: 0950-0618
Available at: http://works.bepress.com/genda-chen/526/