Controlled Creating of Delaminations in Concrete for Nondestructive Testing

IF 2.6 3区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Journal of Nondestructive Evaluation Pub Date : 2024-02-12 DOI:10.1007/s10921-023-01044-7

Juri Timofeev, Hoda Azari, Raghavendra Satyanarayana

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Abstract

Locating and sizing delaminations is a common inspection task in the maintenance and quality control of construction and rehabilitation. Their detection is an important area of application of nondestructive testing in civil engineering (NDT-CE). To improve this application, NDT test systems and test solutions must be compared, for which specimens containing well-defined delaminations are needed to serve as a reference. Currently, there are no widely accepted procedures available for creating such flaws locally and reproducibly. This study presents procedures for creating artificial delaminations repeatably and as close as possible to natural delaminations. To produce the discontinuities only substances were used which can occur in concrete components and do not affect the application of NDT-CE methods. Ultrasonic pulse-echo (UPE) was used to test the flaws in the specimens. The delaminations were created by applying expansive mortar in prepared through holes. Three specimens with two delaminations each were built and tested using UPE.

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为无损检测而在混凝土中控制性地制造脱层

确定分层的位置和尺寸是建筑和修复工程维护和质量控制中的一项常见检测任务。分层检测是土木工程无损检测（NDT-CE）的一个重要应用领域。为了改进这一应用，必须对无损检测测试系统和测试解决方案进行比较，为此需要含有明确分层的试样作为参考。目前，还没有被广泛接受的程序可用于在局部重复制造此类缺陷。本研究介绍了尽可能接近天然分层、可重复产生人工分层的程序。为了产生不连续性，只使用了混凝土构件中可能出现的物质，这些物质不会影响无损检测-CE 方法的应用。超声脉冲回波（UPE）用于检测试样中的缺陷。脱层是通过在准备好的通孔中涂抹膨胀砂浆产生的。使用 UPE 制作并测试了三个试样，每个试样有两个分层。

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来源期刊

Journal of Nondestructive Evaluation 工程技术-材料科学：表征与测试

CiteScore

4.90

自引率

7.10%

发文量

审稿时长

9 months

期刊介绍： Journal of Nondestructive Evaluation provides a forum for the broad range of scientific and engineering activities involved in developing a quantitative nondestructive evaluation (NDE) capability. This interdisciplinary journal publishes papers on the development of new equipment, analyses, and approaches to nondestructive measurements.