Continuous AE monitoring of fresh concrete

Sokratis Iliopoulos, Evin Dildar A Dzaye, Yassir El Khattabi, Geert De Schutter, Dimitrios Angelis

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

The construction of cost-effective, high-strength and durable concrete structures is strongly based on the mix design and the early age assessment of its quality. Corrosion attack, spalling, shrinkage cracking or cracking due to freezing-thawing are only a few examples frequently seen in concrete elements as a result of their poor properties. The estimation of the mechanical and physical properties of the latter is, so far, either based on empirical methods, like the slump and V-funnel test, or on destructive tests, like the core sampling and the application of the Schmidt hammer, which are also applied late on the structure. Therefore, it is made clear that the only way to accomplish trust-worthy quality control as early as the moment of mixing is through non-destructive testing techniques. Among them, Acoustic Emission (AE) is the most promising since it allows for the continuous monitoring of the material’s behavior and the detailed evaluation of the emitted signals obtained from different experimental mix designs. In the current study, the aforementioned technique is used for the examination of the early age activity of specimens with various water to cement (w/c) and aggregate to cement (a/c) ratios. It is found that using a setup which consists of metal molds and resonant sensors provides distinctive results among the specimens. Finally, throughout this work, it is suggested that AE parameters like the Average Frequency (AF) and the RA value can efficiently be used for quality characterization.
Original languageEnglish
Title of host publicationPROGRESS IN ACOUSTIC EMISSION XVIII
EditorsTomoki Shiotani, S Wakayama, M. Enoki, S. Yuyama
Place of PublicationJapan
PublisherThe Japanese Society for Non-Destructive Inspection (JSNDI)
Pages293-298
Number of pages6
Volume1
Edition1
ISBN (Electronic)-
ISBN (Print)-
Publication statusPublished - 5 Dec 2016
EventIIIAE2016, 8th International Conference on Acoustic Emission - Kyoto, Japan
Duration: 5 Dec 20168 Dec 2016

Conference

ConferenceIIIAE2016, 8th International Conference on Acoustic Emission
CountryJapan
CityKyoto
Period5/12/168/12/16

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