Non Destructive Testing of Bridge Pier - A Case Study

Seshu, D. Rama; Murthy, N R Dakshina

doi:10.1016/j.proeng.2013.03.051

Cited by 6 publications

(7 citation statements)

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“…Accordingly, IE shows promising for evaluation of large delamination and cracks, voids, and discontinuities. They also noted that for crack detection, IE has high level of accuracy, repeatability of measurements, and speed of data collecting and analyzing, however, the cost of testing and the ease of use for this technique was rated as moderate .Other advantage of IE is that it is capable of determining deck and slab thickness (Seshu and Murthy 2013). The accuracy of this NDT method in defect evaluation and detection has been investigated (NCHRP 2016).…”

Section: Health Monitoring and Non-destructive Testing Methods Potentmentioning

confidence: 99%

“…12). It was discussed by Seshu and Murthy (2013) as a structural damage detection method including cracks, delamination, and voids. In this method an infrared camera is used for detection that measures the emitted infrared radiation from a structural member.…”

Section: Ground Penetrating Radar Testing (Gpr)mentioning

confidence: 99%

“…(10) Radiographic testing (RT) Radiographic testing (RT) is another NDT method for detecting voids and defects in concrete (Seshu and Murthy 2013). In RT, the element is subjected to X-Ray radiation.…”

Section: (7) Acoustic Emission Testing (Ae)mentioning

confidence: 99%

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Health Monitoring of Closure Joints in Accelerated Bridge Construction: A Review of Non-Destructive Testing Application

Farhangdoust

Mehrabi

2019

ACT

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Accelerated Bridge Construction (ABC) uses prefabricated elements that are made continuous using cast-in-place joints. Deck joints are normally referred to as "Closure Joints." There have been concerns about long-term durability of these joints that are expected to become rapidly serviceable. Normally, they contain reinforcing bars and enclosures of various shapes that in some cases create congestion within the joint. The specific nature of the joint application, in-situ casting, curing, material incompatibility, cold joints, cavities and steel congestion contribute to creating the potential for leaving defects and anomalies in the closure joints. This, in turn, results in a higher potential for exposure and other detrimental effects with possible degradation in time, and therefore reducing the strength and serviceability of the joint, hence creating a weak link for the structure. The long-term deflections and environmental loading will only exacerbate the situation. Hence, evaluation and health monitoring of the closure joints becomes inevitable. Despite the wide use of non-destructive testing (NDT) methods for bridge structures in general, a concerted attempt for categorization of these methods, comparison of capabilities, and selection of methods most applicable to closure joints is lacking. To address this, a research project was carried out as part of activities in the Accelerated Bridge Construction University Transportation Center (ABC-UTC) of Florida International University. This study included a comprehensive literature review with a focus on NDT methods applicable to health monitoring of ABC closure joints. The study focused on joint types relevant to precast concrete decks commonly used for ABC bridges, therefore, FRP (fiber reinforced plastic), timber (wood), and steel of any shape were excluded for the time being. The study resulted in categorizing the most common closure joints in five general groups based on their features affecting the application of the NDT methods. Accordingly, the most promising NDT methods were identified taking into account the distinctive defects and anomalies associated with closure joints. These methods were evaluated for their efficacy, ease of use and other characteristic influencing their use as preferred methods for each type of joint. A flowchart was introduced to assist in selection of the most applicable NDT method to each type of defect in closure joints. This paper summarizes the results of this study.

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Section: Health Monitoring and Non-destructive Testing Methods Potentmentioning

confidence: 99%

Section: Ground Penetrating Radar Testing (Gpr)mentioning

confidence: 99%

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Health Monitoring of Closure Joints in Accelerated Bridge Construction: A Review of Non-Destructive Testing Application

Farhangdoust

Mehrabi

2019

ACT

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“…A wide variety of intervention techniques have been used to repair and strengthen these structures that have suffered damage [4]. Before beginning any remediation, it is necessary to analyze the structure and determine the causes of the damage [5]. Two methodologies for stability building include non-destructive testing (NDT) and minor-destructive testing (MDT).…”

Section: Introductionmentioning

confidence: 99%

Microstructural Characterization and Mechanical Properties of Volcanic Tuff (Malatya, Turkey) Used as Building Stone for the Restoring Cultural Heritage

Maraş

Köse

Rızaoğlu

2020

Period. Polytech. Civil Eng.

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Old stone buildings constitute a significant percentage of the residential buildings in many countries. These structures are highly vulnerable, and important losses in masonry structures occur even in moderate earthquakes. Therefore, safety evaluations of these structures have gained significant attention in recent years. In this study, the mechanical, physical and microstructural characteristics of tuff samples used in the old buildings were investigated in Battalgazi within the boundaries of Malatya Province during the Seljuk time. The characteristics of the building materials were examined in detail using in-situ and laboratory tests. Because adequate samples could not be obtained from the historical buildings, quarry areas with the same characteristics were identified. First, original building stone (OBS) used in construction was taken from fallen and unusable blocks. Then, the properties of the restoration building stones (RBS) brought from the quarries were investigated. The RBS samples were also examined using in the laboratory, and the mechanical and microstructural properties of the building components were determined. The dynamic and static moduli of elasticity were determined using ultrasonic pulse velocity and uniaxial compression test. The OBS and RBS samples yielded similar results after the microstructural analyses. Our results showed that the dynamic elastic modulus value was higher than the static elastic modulus value. The results revealed by both methods showed that the static and dynamic elastic moduli were closely linked. The OBS and RBS samples exhibited microlitic porphyritic and vesicular textures and nearly the same mineralogical and textural characteristics.

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“…UT is a widely used technique for internal defects detection in composite materials, quality inspection, control and monitoring for different applications such as wind turbine blades, ship hulls, automotive components, aircraft structures piping and welds [18,[22][23][24]. Using A-scan ultrasonic inspection technique for detecting defects in composite is quite challenging, however the interpretation of the scanned signals could provide indications for the location and the depth of the defects, accurate information about the shape and the size of the defect is difficult to be visualized [25].…”

Section: Introductionmentioning

confidence: 99%

Non-destructive investigation of thermoplastic reinforced composites

Hassen

Taheri

Vaidya

2016

Composites Part B: Engineering

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This paper studies various manufacturing defects in glass fiber / Polypropylene (PP) composite parts and their methods of detection. Foreign Object Inclusion (FOI) of different shapes, sizes, and materials were placed in a glass fiber / PP panel made by compression molding. The paper aims to characterize the fiber orientation and fiber related defects such as fiber waviness in the composite specimen. Comprehensive investigation for different Non Destructive Evaluation (NDE) techniques, namely X-ray radiography and

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Non Destructive Testing of Bridge Pier - A Case Study

Cited by 6 publications

References 0 publications

Health Monitoring of Closure Joints in Accelerated Bridge Construction: A Review of Non-Destructive Testing Application

Health Monitoring of Closure Joints in Accelerated Bridge Construction: A Review of Non-Destructive Testing Application

Microstructural Characterization and Mechanical Properties of Volcanic Tuff (Malatya, Turkey) Used as Building Stone for the Restoring Cultural Heritage

Non-destructive investigation of thermoplastic reinforced composites

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