scholarly journals Algorithm for Integrated Non-Destructive Diagnostics of Technical Condition of Structures of Buildings and Constructions Using the Thermogram Analysis

2020 ◽  
Vol 161 ◽  
pp. 01040 ◽  
Author(s):  
Denis Karpov ◽  
Anton Sinitsyn
Keyword(s):  
Thermal Imaging ◽  
Thermal Power ◽  
Heating System ◽  
Technical Condition ◽  
Field Analysis ◽  
Building Structures ◽  
Highly Qualified ◽  
Logical Sequence ◽  
Non Destructive

An algorithm for integrated non-destructive diagnostics of technical condition of structures of buildings and constructions using the temperature field analysis is proposed. An attempt is made to systematize, characterize and build a logical sequence of stages for energy inspection of heat-consuming and heat-generating construction objects and their structural elements. The presented algorithm differs from the well-known technologies for energy monitoring of buildings and structures by the presence of two additional steps, which are an integrated part of any energy examination: determination of the relative surface humidity of building structures and the actual mass flow of coolant through a heating system using qualitative and quantitative assessment of thermal images. The implementation of energy (thermal imaging) and technical examinations according to the presented structural scheme requires appropriate equipment, as well as involvement of highly qualified specialists (civil engineers, thermal power engineers, thermal physicists, thermal imaging operators, etc.).

scholarly journals THE ALGORITHM OF COMPLEX DIAGNOSTICS OF TECHNICAL CONDITION OF BUILDING STRUCTURES ON THERMOGRAMS ANALYSIS

2020 ◽  
pp. 23-28
Author(s):  
D. Karpov
Keyword(s):  
Construction Projects ◽  
Thermal Power ◽  
Technical Condition ◽  
Building Structures ◽  
Structural Elements ◽  
Highly Qualified ◽  
Energy Survey ◽  
Measurement Base ◽  
Actual Mass

the algorithm of complex diagnostics of a technical condition of building constructions and structures on the analysis of thermograms is offered. An attempt is made to systematize and logically build a sequence of stages of energy inspection of heat-consuming and heat-generating construction projects and their structural elements. The presented algorithm includes the main stages performed in such surveys. It differs from the known technologies of energy monitoring of buildings and structures by the presence of two additional stages, which are an integral part of any energy survey: determination of the relative surface humidity of building structures and the actual mass flow of coolant through the heating device for the analysis of thermal images. The implementation of energy (thermal imaging) and technical inspections according to the presented structural scheme requires not only the presence of appropriate instrumentation and measurement base, but also the involvement of highly qualified specialists (civil engineers, thermal power engineers, thermal physicists, operators-thermographers, etc.).

MODELING THE PROCESS OF INSPECTION OF REINFORCED CONCRETE SUPPORTS OF TECHNOLOGICAL OVERPASSES

2021 ◽  
Vol 14 (1) ◽  
pp. 68-73
Author(s):  
N Rogov ◽  
S. Nikolenko ◽  
Svetlana Sazonova
Keyword(s):  
Reinforced Concrete ◽  
Concrete Strength ◽  
Technical Condition ◽  
Concrete Cover ◽  
Magnetic Method ◽  
Strength Of Materials ◽  
Elastic Rebound ◽  
Cover Thickness ◽  
Non Destructive

The paper presents the process of assessing the technical condition of reinforced concrete supports of existing technological overpasses. The characteristics of overpasses are given. Defects identified in the process of assessing the technical condition are shown. The paper describes the control of concrete strength by the non-destructive method of elastic rebound using the Digi Shmidt 2000 device and the determination of the concrete cover thickness and the location of reinforcement by the magnetic method using the Profometer-5S device. The layout of the working reinforcement in the reinforced concrete supports of the overpass section has been determined. The results of verification calculations of the structures of technological ramps are given, taking into account the revealed defects and damages, the strength of materials and the specified actual loads. Proposals are given for improving the performance of concrete of reinforced concrete supports of overpasses.

scholarly journals Comprehensive Restoration of an Efficient Technical Condition of the Bearing Brickwork, Having Physical Wear

2020 ◽  
Vol 24 (2) ◽  
pp. 60-72
Author(s):  
S. V. Dubrakov ◽  
K. O. Dubrakova ◽  
A. V. Masalov
Keyword(s):  
Residential Building ◽  
Technical Condition ◽  
Building Structures ◽  
Foundation Soil ◽  
Adverse Conditions ◽  
Area 7 ◽  
Blind Area ◽  
Heating Water ◽  
Inspection Work

Purpose of research. Inspection and assessment of the technical condition of the enclosing structures of a residential building located at st. Engelsa, 107 in Kursk were carried out in connection with the development of the reinforcement project.Methods. Inspection of the technical condition of buildings and structures is necessary to determine the residual resource and service life of the building structures. The current regulatory documents require an examination of the technical condition of buildings and structures no later than two years after their commissioning. In the future, the inspection of the technical condition of buildings and structures is carried out at least once every 10 years and at least once every five years for buildings and structures or their individual elements operating in adverse conditions (aggressive environments, vibrations, high humidity, seismicity of the area 7 points and more, etc.). A permanent monitoring regime is established for unique buildings and structures.Results. In the process of examining a residential building located at st. Engelsa, 107, the following tasks have been solved: determination of damage to enclosing structures; analysis of the results of the study of the degree of wear of building structures; implementation of proposals for strengthening the brickwork. To eliminate the above damages, a proposal was developed to increase the rigidity of the above-foundation part of the building, having previously excluded soaking the foundation soil: by repairing the blind area and heating, water supply and sewerage networks.Conclusion. The solution of a narrow task of strengthening individual structures of buildings and structures may not give the desired result, therefore, when performing inspection work, it is necessary to consider the existing defects and damage in the complex. Within the framework of this work, we consider the strengthening of the load-bearing walls of a residential building with an increase in the overall rigidity of the above-foundation part of the building and the elimination of individual damages.

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 Methodology remaining lifetime determination of the building structures

2018 ◽  
Vol 230 ◽  
pp. 02023 ◽  
Author(s):  
Yuriy Otrosh ◽  
Andrii Kovalov ◽  
Oleg Semkiv ◽  
Irina Rudeshko ◽  
Valentin Diven
Keyword(s):  
Structural Damage ◽  
Residual Life ◽  
Technical Condition ◽  
Building Structures ◽  
Design Elements ◽  
Fixed Assets ◽  
Technical Examination ◽  
Effective Use ◽  
Technical Solutions

The paper proposes an approach to determining the increase of the normative lifetime of building structures on the basis of the algorithm of numerical calculation of the residual life of structures, which is performed on the basis of the results of defining parameters obtained during the technical examination and evaluation of defects, failures and structural damage. To calculate the structures, the simulation of the stressstrain state of the building structures with the involvement of OK LIRA was used. Simulation allowed performing optimization of technical solutions and strengthening of structures for buildings. The methodology is used to design elements for strengthening the structures of buildings and structures. Reliable estimation and forecasting of the technical condition enables to prevent the occurrence of accidents of structures and their associated losses, to use rational use of funds for current and capital repairs, and to regulate the technical condition in such a way as to achieve the most effective use of fixed assets.

scholarly journals Feasibility of active and passive thermal control application for defect identification of building materials and products, enclosures of construction objects

2021 ◽  
Vol 288 ◽  
pp. 01101
Author(s):  
Denis Karpov ◽  
Daniya Zaripova ◽  
Mikhail Pavlov
Keyword(s):  
Qualitative Analysis ◽  
Thermal Imaging ◽  
Building Materials ◽  
Thermal Control ◽  
Building Structures ◽  
Destructive Testing ◽  
Defect Identification ◽  
Building Enclosure ◽  
Control Application ◽  
Non Destructive

This paper considers one of the most promising and modern methods of non-destructive testing - thermal control. The possibilities and advantages of thermal control for identifying defects of various building materials and products, enclosures of buildings and structures are presented. Brief characteristics of the main defects of building materials, products, and structures are presented. The basic principles of identifying hidden (invisible) and explicit (visible) defects are briefly considered and the practical results of construction defect identification of objects for various purposes using thermal imaging equipment are presented. The zones of thermal temperature anomalies are localized during qualitative analysis of thermograms (the method of active thermal control). The considered example is a fragment of a building enclosure made ceramic bricks with artificially created technical defects. For some enclosures of building structures and constructions, explicit thermal defects were identified from thermal imaging, their qualitative analysis was carried out, and recommendations for their elimination were proposed (method of passive thermal control).

Determination of the Strength Parameters of Pinewood Based on the Non-Destructive Sclerometric Test with a Wood Hammer

2020 ◽  
Vol 30 (1) ◽  
pp. 43-52
Author(s):  
Bartosz Szostak ◽  
Maciej Trochonowicz ◽  
Mateusz Kowalczyk
Keyword(s):  
Compressive Strength ◽  
Nondestructive Testing ◽  
Technical Condition ◽  
Strength Parameters ◽  
The Impact ◽  
Non Destructive ◽  
Structure And Design

AbstractTo assess the technical condition of a structure and design it using existing elements, it is necessary to know its parameters. For existing facilities, it is often not possible to get a sample of material and examine it directly in the laboratory. For this reason, in situ nondestructive testing is very important.The main goal of the paper is to present the issues related to determining the strength parameters of a particular wood based on the non-destructive sclerometric test performed with a wood sclerometric hammer. The study also presents the results of the impact of pinewood density on its compressive strength.

scholarly journals RESEARCH AND IMPLEMENTATION OF INTELLIGENT INFORMATION TECHNOLOGY FOR TESTING THE NEURAL NETWORK OF THE DIAGNOSTIC SYSTEM OF TECHNICAL CONDITION OF BUILDINGS

2021 ◽  
pp. 76-83
Author(s):  
Alexander Terentyev ◽  
Yevhenii Gorbatyuk ◽  
Olena Dolya ◽  
Olha Serpinska ◽  
Mariia Liashchenko
Keyword(s):  
Information Technology ◽  
Life Cycle ◽  
Diagnostic System ◽  
Technical Condition ◽  
Automated System ◽  
Building Structures ◽  
Measurement Systems ◽  
Determination Of Parameters ◽  
The Impact

The methodological bases of construction of information system of diagnostics of technical condition of constructions of buildings and constructions and substantiation of efficiency of technologies of instrumental definition of parameters of buildings, constructions at all stages of their life cycle which are considered from a position of strategic information management are offered; carried out, from the standpoint of a systematic approach, the formalization of the processes of wear of building structures, which allows the creation of an effective and reliable analytical apparatus for monitoring the technical condition and diagnosis of future conditions in the process of their reliable and safe operation; built, using the apparatus of fuzzy sets, models and methods of monitoring a certain technical condition of buildings; The information technology of the decision support system, which is based on powerful intellectualizing analytical tools that allow experts to make more plausible assessments and management decisions, has been further developed. Based on the results of studying scientific sources, conclusions were made about the absence or need to deepen the solutions to the following problems: establishing general principles for the formation of a system for diagnosing the technical condition of buildings at all stages of their life cycle; lack of methodology to substantiate the effectiveness of technologies and tools for instrumental determination of parameters of buildings, structures and building areas at all stages of the life cycle; adaptation of methods for determining organizational and technological indicators to calculate the effectiveness of measurement systems and technology of their application; determining the impact of organizational and technical indicators on the efficiency of measurement systems and technology of their application; determination of the duration and periodicity of instrumental inspections as part of the operating costs of measuring systems; establishment of necessary volumes of instrumental observations at operation of buildings and constructions of substantiation of expenses of time for performance of measuring works at all stages of a life cycle of construction objects; lack of a single methodology for creating an automated system for diagnosing the technical condition of buildings; lack of integrated models and methods of modeling diagnostic processes that would ensure the effective functioning of information technology diagnostics of technical condition of buildings and high accuracy of expert decisions on their condition and forecasting the main technical characteristics of their operation under external and internal environments; the lack of a single information database that would make it possible to compare the results of surveys, to observe the dynamics of aging of buildings, to systematize conclusions about their condition.

scholarly journals Devices for non-destructive testing of building structures

2020 ◽  
Vol 77 (3) ◽  
pp. 91-96
Keyword(s):  
Building Structures ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Devices And Instruments ◽  
Building Condition ◽  
Non Destructive

This article has a goal - to give information about the conducted researches with the use of modern devices and instruments. Descriptions of автомaтизиpовaнной измepитeльной cиcтeмы are given for измepeния paзличных of types of дeфоpмaций иcпытывaeмых конcтpукций путeм peгиcтpaции and пpeобpaзовaния in инжeнepныe eдиницы in peaльном мacштaбe вpeмeни cигнaлов. Determination of defects and deformations in a transport building, condition of work.

Pre-Decommissioning Radiological Characterization of Concrete

2007 ◽  
Author(s):  
Sven Boden ◽  
Eric Cantrel
Keyword(s):  
Building Materials ◽  
Gamma Spectroscopy ◽  
Cost Minimization ◽  
Field Tests ◽  
Building Structures ◽  
Naturally Occurring Radionuclides ◽  
Non Destructive ◽  
Activation Depth

The decommissioning of the BR3 (Belgian Reactor 3) approaches its final phase, in which the building structures are being decontaminated and either denuclearized for possible reuse or demolished. Apart from the presence of naturally occurring radionuclides in building materials, other radionuclides might be present due to contamination or activation. The overall process of the BR3 building structure D&D (Decontamination & Decommissioning) consists of the following steps: • make a complete inventory and preliminary categorize all elements based on historical data; • characterize and determine the contamination or activation depth; • determine the decontamination method; • perform the decontamination and clean up; • a possible intermediate characterization followed by an additional decontamination step; and • characterize for clearance. A good knowledge of the contamination and activation depth (second step) is fundamental in view of cost minimization. Currently, the method commonly used for the determination of the depth is based on core drilling and destructive analysis. Recently, we have introduced a complementary non destructive assay based on in-situ gamma spectroscopy. Field tests at BR3, both for contamination and activation, showed promising results.

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