scholarly journals Integrating Non-Destructive Surveys into a Preliminary BIM-Oriented Digital Model for Possible Future Application in Road Pavements Management

2022 ◽  
Vol 7 (1) ◽  
pp. 10
Author(s):  
Fabrizio D’Amico ◽  
Luca Bianchini Ciampoli ◽  
Alessandro Di Benedetto ◽  
Luca Bertolini ◽  
Antonio Napolitano
Keyword(s):  
Pavement Management ◽  
Point Of View ◽  
Digital Model ◽  
Future Application ◽  
Road Infrastructure ◽  
Twin Model ◽  
Pavement Management Systems ◽  
Effective System ◽  
Ground Penetrating ◽  
Non Destructive

The implementation of the digitalization of the linear infrastructure is growing rapidly and new methods for developing BIM-oriented digital models are increasing. The integration of the results obtained from non-destructive surveys carried out along a road infrastructure in a pavement digital model can be a useful method for developing an efficient process from a pavement management systems (PMS) point of view. In fact, several applications to optimize PMS have been thoroughly investigated over the years and several researchers and scientists have investigated significant elements for improving the PMS applied to a transport network, including road infrastructures. This study presents a new, tentative process for implementing into a BIM environment the dataset processed from two surveys carried out in a case study. Moreover, the main reason for this investigation is related to the need for an effective system able to evaluate continuously the pavement conditions and programming maintenance interventions. To date, both the instruments and the methods to detect the pavement configuration have evolved, along with the development of non-destructive technology (NDT) tools such as laser-scanners and ground-penetrating radar. Finally, the main results of the research demonstrate the possibility to provide a digital twin model from the synergistic use of geometric and design information with the results from monitoring conducted on a road infrastructure. The model can be potentially used in future BIM-based PMS applications.

scholarly journals Long-Term Monitored Road Degradation Functions as a Tool to Increase Quality of Pavement Design

2021 ◽  
Vol 11 (21) ◽  
pp. 9839
Author(s):  
Stefan Sedivy ◽  
Lenka Mikulova ◽  
Peter Danisovic ◽  
Juraj Sramek ◽  
Lubos Remek ◽  
...  
Keyword(s):  
Technical Condition ◽  
Pavement Management ◽  
The Road ◽  
Pavement Management Systems ◽  
Continuous Application ◽  
Secondary Objective ◽  
Operation Phase ◽  
Destructive Measurement ◽  
Non Destructive

Ensuring the sustainability of road infrastructure cannot be achieved without the continuous application of new knowledge and approaches within individual management steps. A particularly risky stage in the life cycle of existing roads is the operation phase. High attention is paid to the environmental, financial and social impacts and benefits of individual processes applied by road managers. These processes meet in pavement management systems (PMS), which, however, cannot work reliably without the necessary input data. Information on the development of the technical condition of the road can also be included among the most important data. The paper brings the first outputs from several years of research of measurements on the Slovak 1st class road. Its aim is to gradually determine the degradation functions for the needs of Slovak geographical, climatic and transport conditions. The secondary objective is to verify the reliability of non-destructive measurement procedures of the technical condition of the road. Emphasis is placed on the application of such mathematical procedures that can not only reliably bring about the determination of past developments in the roadway, but can also present the expected picture of future developments.

scholarly journals Nonlinear spectral correction of the pulse GPR signals

2018 ◽  
Keyword(s):  
Thickness Measurement ◽  
Point Of View ◽  
Building Structures ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Electromagnetic Pulses ◽  
Industrial Structures ◽  
The One ◽  
Ground Penetrating ◽  
Non Destructive

Background: The problems of non-destructive testing of industrial structures and transport structures are relevant from the point of view of increasing the efficiency of their control systems and saving financial resources and materials. The relevance of scientific research in the field of remote sensing and methods for solving inverse problems is also associated with the prospects for the formulation and solution of biomedicine problems associated with computer technology. Objectives of the work is to study the possibilities of virtual adjustment of the properties of probing and reflected signals to increase the reliability of processing results and increase the accuracy of restoration of the properties of objects when solving thickness measurement problems. Materials and methods: The basis of the proposed approach is the correction of the amplitudes of pulse signals in order to increase the accuracy of the values ​​obtained as a result of processing by introducing a normalizing factor into the processing algorithm, the value of which would be a function obtained as a result of GPR calibration procedures. Another way to increase the reliability of the data processing procedure may be by computer correction of the waveform to approximate its shape to the shape of an idealized model pulse. Results: As a result of theoretical analysis, methods and algorithms for implementing the procedure for improving the processing of sets of primary sensing data obtained using pulsed georadars were proposed. Conclusion: The analysis of the methods for processing and adjusting the characteristics of pulsed ground-penetrating radar signals made it possible on the one hand to better understand the physical basis for the interaction of electromagnetic pulses with plane-layered media. On the other hand, practical methods of improving the quality control of various engineering and transport structures, as well as building structures, are proposed.

scholarly journals Application of georadars for detecting subsurface defects in layers of non-rigid road pavements

2020 ◽  
Keyword(s):  
Low Cost ◽  
Calibration Method ◽  
Point Of View ◽  
Thin Layers ◽  
Building Structures ◽  
Destructive Testing ◽  
Road Pavement ◽  
Current State ◽  
Ground Penetrating ◽  
Non Destructive

The relevance of the problem under consideration is a consequence of the high cost of classical methods of pavement inspection. At the same time, the use of modern pulse georadars allows to ensure a relatively low cost of monitoring the current state of highways, since it allows to obtain georadar data when a laboratory vehicle is moving at the speed of a traffic flow. This minimizes the role of costly and time-consuming operations such as coring or cutting. The purpose of this work is to improve the methods for obtaining primary GPR data, which were previously proposed by the authors to improve the accuracy and reliability of the results of processing pulsed GPR signals. Materials and methods. When processing model and experimental data, first of all, modern theoretical methods of processing pulse signals from ground penetrating radars, as well as methods of computer modeling, were used. Results. Based on the analysis of the factors that determine the key features of GPR signals, a signal calibration method has been proposed, which makes it possible to increase the reliability of detecting such defects in layers of non-rigid road pavement made of monolithic materials, such as loss of interlayer adhesion, or identification of thin layers from an electrophysical point of view in multilayer media. Conclusions. Combining the signal calibration method together with the previously proposed approach to detecting the loss of interlayer adhesion and the performed numerical simulation made it possible to increase the reliability of the procedure for non-destructive testing of road pavements and other building structures. During the work, laboratory experiments were performed on model structures. The analysis of the obtained data was performed using the developed software GeoVizy.

scholarly journals Rock Emissivity Measurement for Infrared Thermography Engineering Geological Applications

2021 ◽  
Vol 11 (9) ◽  
pp. 3773
Author(s):  
Simone Mineo ◽  
Giovanna Pappalardo
Keyword(s):  
Surface Temperature ◽  
Infrared Thermography ◽  
High Sensitivity ◽  
Point Of View ◽  
Rock Surface ◽  
Rock Types ◽  
Ornamental Stones ◽  
Emissivity Measurement ◽  
Laboratory Tool ◽  
Non Destructive

Infrared thermography is a growing technology in the engineering geological field both for the remote survey of rock masses and as a laboratory tool for the non-destructive characterization of intact rock. In this latter case, its utility can be found either from a qualitative point of view, highlighting thermal contrasts on the rock surface, or from a quantitative point of view, involving the study of the surface temperature variations. Since the surface temperature of an object is proportional to its emissivity, the knowledge of this last value is crucial for the correct calibration of the instrument and for the achievement of reliable thermal outcomes. Although rock emissivity can be measured according to specific procedures, there is not always the time or possibility to carry out such measurements. Therefore, referring to reliable literature values is useful. In this frame, this paper aims at providing reference emissivity values belonging to 15 rock types among sedimentary, igneous and metamorphic categories, which underwent laboratory emissivity estimation by employing a high-sensitivity thermal camera. The results show that rocks can be defined as “emitters”, with emissivity generally ranging from 0.89 to 0.99. Such variability arises from both their intrinsic properties, such as the presence of pores and the different thermal behavior of minerals, and the surface conditions, such as polishing treatments for ornamental stones. The resulting emissivity values are reported and commented on herein for each different studied lithology, thus providing not only a reference dataset for practical use, but also laying the foundation for further scientific studies, also aimed at widening the rock aspects to investigate through IRT.

Non-Destructive Evaluation of Reinforcing Rebar Radius by Digital Image GPR Technique

2014 ◽  
Vol 501-504 ◽  
pp. 847-851
Author(s):  
Che Way Chang ◽  
Chen Hua Lin ◽  
Shyi Lin Lee ◽  
Ping Huang Chen ◽  
Ching Cheng Jen ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Behavior Analysis ◽  
Physical Model ◽  
Digital Image ◽  
Ground Penetrating Radar ◽  
High Efficiency ◽  
Non Destructive Evaluation ◽  
Energy Zone ◽  
Ground Penetrating ◽  
Non Destructive

Ground Penetrating Radar (GPR) is a high efficiency technology to detect the cylindrical medium in the concretes material. The electromagnetic wave is incidental to double-rebar, and measures the reflection signal behaviors from energy zone. The results from the reflection signal of electromagnetic wave of the reinforcement concretes allow evaluating the radius of double-bar (1.6cm, 1cm). A physical model can effectively measure the radius of double-bar by the result of electromagnetic wave reflex behavior analysis. The results indicate that, this techology is capable of estimating the reinforcing double-bar radius to within 6%.

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