Evaluation of the resistance of steel–concrete adhesive connection in reinforced concrete beams using guided wave propagation

Zima, Beata; Kędra, Rafał

doi:10.1007/s43452-019-0008-6

Cited by 43 publications

(3 citation statements)

References 28 publications

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“…It is a type of analysis with which certain properties of concrete, such as mechanical performance [4] and reinforcement corrosion [5,6], and of other construction materials, such as masonry [7], are measured without inflicting any damage. Thus, the results of NDT can be used to estimate the current mechanical properties of construction materials, without any further damage to the component that is being tested [8], provided that their accuracy limitations are kept in mind [9]. Knowing the mechanical properties allows evaluation of the degree of damage of the tested element, which means that repair or rehabilitation can be promoted and conducted with greater success both in historical constructions [10] and in more recently built concrete structures [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Utility of Ultrasonic Pulse Velocity for Estimating the Overall Mechanical Behavior of Recycled Aggregate Self-Compacting Concrete

et al. 2023

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Ultrasonic pulse velocity (UPV) is a non-destructive measurement technique with which the quality of any concrete element can be evaluated. It provides information on concrete health and for assessing the need for repair in a straightforward manner. In this paper, the relationship is studied between UPV readings and the mechanical behavior of self-compacting concrete (SCC) containing coarse, fine, and/or powdery RA. To do so, correlations and simple- and multiple-regression relationships between compressive strength, modulus of elasticity, splitting tensile strength, flexural strength, and UPV readings of nine SCC mixes were assessed. The correlations showed that the relationship of UPV with any mechanical property was fundamentally monotonic. The inverse square-root model was therefore the best-fitting simple-regression model for all the mechanical properties, although for bending-tensile-behavior-related properties (splitting tensile strength and flexural strength) the estimation accuracy was much lower than for compressive-behavior-related properties (compressive strength and modulus of elasticity). Linear-combination multiple-regression models showed that the properties related to bending-tensile behavior had a minimal influence on the UPV value, and that their introduction resulted in a decreased estimation accuracy. Thus, the multiple-regression models with the best fits were those that linked the compressive-behavior-related properties to the UPV readings. This therefore enables the estimation of the modulus of elasticity when the UPV and compressive strength are known with a deviation of less than ±20% in 87% of the SCC mixes reported in other studies available in the literature.

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Section: Introductionmentioning

confidence: 99%

Utility of Ultrasonic Pulse Velocity for Estimating the Overall Mechanical Behavior of Recycled Aggregate Self-Compacting Concrete

et al. 2023

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“…However, typically such studies are limited to monitoring the setting and curing process [22][23][24][25][26] and assessing the debonding between steel bars and concrete due to pitting, corrosion and debonding. [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41] This paper aims to demonstrate a novel waveguide ultrasonic sensor technique for detecting and monitoring defects or delaminations within the concrete volume. One of the significant challenges of using guided ultrasonic waves in this context is that the surrounding concrete medium strongly attenuates the wave energy, limiting the range of inspection within the bulk.…”

Section: Introductionmentioning

confidence: 99%

“…However, typically such studies are limited to monitoring the setting and curing process 22–26 and assessing the debonding between steel bars and concrete due to pitting, corrosion and debonding. 27–41…”

Section: Introductionmentioning

confidence: 99%

Sleeved waveguide ultrasonic sensor for monitoring concrete health

Kairu,

Gatari,

Mumenya

et al. 2023

Structural Health Monitoring

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This article reports the development of a novel embedded waveguide ultrasonic sensor for detecting the onset of damage in reinforced concrete structures. A sleeved waveguide is proposed to confine guided ultrasonic waves in one-dimension, with leakage to the surrounding media only through specially created openings, thus reducing attenuation losses and enhancing the capability to inspect large structures from a single transducer location. The test frequency and mode are identified through modelling, and the interaction of leaky guided ultrasonic waves with delamination within the concrete volume is studied. Numerical simulations validated by experiments are used to study the changes in wave features such as mode velocity, wavelength and wave reflection in the delamination region, helping to estimate its location. Further simulation studies are carried out to demonstrate the possibility of using multiple waveguide sensors and sleeve openings to provide a full view of the concrete volume. The results are encouraging for practical long-range and large-scale monitoring of concrete volumes using the proposed sleeved waveguide ultrasonic sensors.

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Enhanced Flexural Performance of Diamond Latticed Triply Periodic Minimal Surface Sandwich Panels

Mahapatra,

Velmurugan,

Jayaganthan

2023

Adv Eng Mater

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The additively manufactured bio‐inspired lattice structures have various superior properties in comparison to their solid counterparts as they are lightweight and suitable for fabricating various parts in aerospace sectors. This study limits the investigation of triply periodic minimal surface (TPMS)‐based diamond sheet and solid cellular structures with varying densities (25%, 35%, 45%, and graded) under flexural loading conditions. The sandwich panel structures are made using acrylonitrile butadiene styrene material utilizing the fused filament fabrication (FFF) process. In‐plane flexural performances of the FFF fabricated bio‐inspired TPMS diamond sandwich panels are investigated for the first time. The panels are created to investigate how density and unit cell geometry affect stiffness, strength, and energy absorption. The digital image correlation approach is used to visualize the deflection of the panels subjected to three‐point bending. Also, a theoretical analysis is done to find out the deflection of the sandwich panel structures. An Ashby chart shows the comparison of the specific energy absorption of the TPMS diamond sandwich panels used in this study with several other cellular core sandwich panels available in the literature. This study provides a valuable contribution to the improved energy absorption performance of additively manufactured cellular materials.

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Evaluation of the resistance of steel–concrete adhesive connection in reinforced concrete beams using guided wave propagation

Cited by 43 publications

References 28 publications

Utility of Ultrasonic Pulse Velocity for Estimating the Overall Mechanical Behavior of Recycled Aggregate Self-Compacting Concrete

Utility of Ultrasonic Pulse Velocity for Estimating the Overall Mechanical Behavior of Recycled Aggregate Self-Compacting Concrete

Sleeved waveguide ultrasonic sensor for monitoring concrete health

Enhanced Flexural Performance of Diamond Latticed Triply Periodic Minimal Surface Sandwich Panels

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