bluuebunny/crossref_metadata_2025_split huggingface dataset:
Difficulties in Operation of Elevations in Large-Panel Buildings
Authors: Knyziak Piotr , Kanoniczak Marcin 
Published: November 2019

Abstract
The article presents problems in facade walls operation of large-panel buildings. Examples of irregularities resulting from the initial poor quality of precast elements and assembly errors are presented, as well as problems arising as a result of repeated renovation and modernization works. The problems before and after wall insulation were discussed in greater detail, resulting from leaking joints of precast elements. Biological threats resulting from the influence of algae, lichens and vines on the façade material are presented. The general technical condition of the facade of a selected group of buildings was compared in studies carried out at an interval of 11 years.
Formal Expert Examination of Welded Joints Quality at Oil and Gas Industry Construction Projects
Authors: Didkovskaya Olga V. , Mamaeva Olga A. , Ilyina Marina V. 
Published: November 2019

Abstract
Now construction engineering and engineering research set much store by determination of completed works and building structures quality. At the same time, there are no special approved methods of quality determination. In this paper the authors are going to draw up a methodology of assessing the quality of welded joints of pipeline structures in case these works have to be examined forensically. The researchers analyse legislation requirements on forensic examinations technical regulations and practical experience and offer a methodology which makes it possible to conduct a formal expert examination in a proper legitimate way.
Assessment of the Technical Condition of a Deteriorated Heat Pipeline Overpass before Repair
Authors: Lutomirska Marta , Lutomirski Tomasz 
Published: November 2019

Abstract
Pipeline overpasses are special structures common in many fields of industry. The magnitude and origin of damages to a heat pipeline overpass are presented and discussed. One of the more typical elements, a vertical truss with the smallest cross section, was chosen for an assessment of its resistance. The former design codes, valid at the time of the design, construction, and use of the overpass significantly differ from the current design codes. The calculations were performed with the use of three design codes, which were valid during the period of 60 years of use of the overpass. The results are summarized and compared.
State-of-the-Art on Fire Resistance Aspects of FRP Reinforcing Bars
Authors: Protchenko Kostiantyn , Szmigiera Elzbieta , Urbanski Marek , Garbacz Andrzej , Narloch Piotr , Lesniak Przemysław 
Published: November 2019

Abstract
The behaviour of Fibre-Reinforced Polymer (FRP) bars and Fibre-Reinforced Polymer reinforced concrete (FRP-RC) members under fire exposure is quite different from conventional means. This may be attributed to the complex behaviour of the bars when they are subjected to fire, as well as to the complexity of fire test procedures. The thermomechanical properties of FRP bars depend on the chemical composition of their constituents, their interface performance and the production process. The choice of the type of fibres and matrix with characteristics suitable for the desired purpose, as well as their balanced proportions in FRP bar can be the key factors affecting the overall resistance of an FRP element in the event of fire. The work presents a theoretical background and is intended to identify existing gaps in knowledge to justify the need for the present study.
Impact of the Fire and Acoustic Protection on the Composition of Lightweight Wood-based Cladding Envelopes in the Construction of Apartment Buildings in Passive Standard
Authors: Iringova Agnes , Vandlickova Dominika , Divis Michal 
Published: November 2019

Abstract
The aim of the paper is to analyze structural systems of wood-based buildings and their applicability in the construction of apartment buildings in terms of fire safety. It also describes the optimization of the material base of thermal insulation and cladding materials in terms of fire and acoustic insulation and optimization of insulation and cladding materials in terms of sustainable development. The result is assessment of their suitable application in the construction of apartment building depending of the fire height and Comparison of their physical parameters in terms of thermal and acoustic insulation.
Approximation Method for Evaluation of Strains and Forces in LTP Reinforcement of Embankments on Columns
Authors: Gajewska Beata , Gajewski Marcin 
Published: November 2019

Abstract
This article presents a method of approximate finding of forces and strains resulting from the so-called membrane effect in the reinforcement of the transmission layer of embankments located on a soft soil improved by columns (rigid inclusions). The model task needed to determine the characteristic values in geosynthetic reinforcement supported on rigid columns was formulated. The reinforcement is treated as an isotropic membrane, in which the strains are determined using the formula for the length of the curve, i.e. it deviates from the assumptions of the small strain theory. Spatial problems are reduced to equivalent one-dimensional static tasks for analysis using the isotropic membrane theory. The closed form solution of this task exists only in the case of uniform load. For other types of loads, it is necessary to approximate the formula for the length of the curve occurring in the expression defining the strains in the membrane, e.g. using the Taylor series, and then solving the strongly non-linear equation in which the membrane tension force is unknown. The article presents the analysis of the effect of the length curve approximation with usage of the Taylor series on the accuracy of the results obtained. The presented analysis is very important from the point of view of standard engineering calculations needed to design the reinforcement of the transmission layer in the case of embankments located on soft soil reinforced with rigid inclusions.
Methods of Surveying the Inlet and Outlet Channels of the Spillway Dam at the Hydroelectric Power Plant
Authors: Evdokimov Sergey , Seliverstov Vladimir , Orlova Alla , Rakova Elena 
Published: November 2019

Abstract
The paper deals with methods of the hydroacoustic survey of the outlet, inlet channels of the spillway dam at the Zhigulevskaya hydroelectric power plant and waters adjacent to the earth-fill dam. The survey of underwater parts of hydraulic structures and the bottom of the Zhigulevskaya hydroelectric power plant was carried out with the help of the hydroacoustic method and included full coverage of all surfaces of underwater parts. All deformations of the surveyed surfaces and all foreign objects on them, the size of which exceeded 0.5 m in height, were recorded. The survey of the waters was carried out with tacks of basic coverage based on a system of parallel tacks oriented in parallel and perpendicular to the axis of the structures. The devices used for the survey allowed obtaining coordinate increments in the plan and along the height at the distances of the surveyed waters with an accuracy of not more than 0.1 m and a confidence coefficient of 95 %. When performing the set of works, it became possible to conduct the hydroacoustic survey and create a bathyorographical map for the inlet and outlet channels at the spillway dam. The hydroacoustic survey allowed making a sample-based assessment of the condition of concrete slopes of the outlet, inlet channels at the spillway dam, of the HPP as well as the condition of slope protection at the earth-fill dam in the waters of the upper pool. The analysis of the survey results helped to evaluate the dynamics of the deformation process taking place at the bottom of the outlet, inlet channels at the spillway dam, the HPP and in the waters around the earth-fill dam. As a result, measures for the operational reliability of structural elements in the outlet, inlet channels at the spillway dam, the HPP and in the waters around the earth-fill dam were developed. In addition, according to the results of the hydroacoustic survey of the outlet, inlet channels at the spillway dam of the Zhigulevskaya HPP, a new bathymetrical map was created.
Comparison of Chosen Geodetic Method for Measuring of Swimming Pool Length
Authors: Chromcak Jakub , Cesnek Tomas , Izvoltova Jana 
Published: November 2019

AbstractLengths are one of the basic geometrical quantities measured in geodetic works. The most important precondition for proper measurement is an accurate knowledge of length measures, calibrated standards, comparative devices and length measuring instruments. Nowadays, there is some kind of technological boom in all technological spheres. The measured length can be partial result of another kind of measurement like the 3D scanning. The aim of article is to compare measuring methods for measuring of swimming pool length.
Effect of Stone Columns on the Behaviour of Single Pile in Soft Clay Soil
Authors: Znamenskii Vladimir , Abd El-Naiem Mostafa Abdou , Towfeek Ahmed Rushdy , Hegazy Osama 
Published: November 2019

Abstract
Soft clay is consolidated upon any slight change in the effective stress. Consolidation and settlement of soft clay surrounding a pile usually drag the pile down ward. The down drag movement adds additional loads to the already loaded pile. This force is expressed as a negative skin friction. Negative skin friction starts from the pile head to a neutral depth depending on the interface properties. This depth is referred to as the neutral plan. This paper presents a study on the effect of stone columns on the behaviour of piles during consolidation of soft clay soil. For this goal the experimental tests were done to study effect of stone columns on the behaviour of single pile embedded in soft clay. The study concluded that the neutral plane is located closer to the end of the pile as the end bearing increases. Stone columns are considered one of methods used to reduce the settlement of soft clay soil, and helps to speed up the rate of consolidation by shorting the length of drainage path within the soft clay layers, and then decrease the relative displacement between the pile and the surrounding soft soils. The use of stone columns reduced the amount of negative friction developed along the pile depth.
Problems and Prospects of Billing Systems in the Housing and Utilities Sector of Russia
Authors: Degaev Evgeniy 
Published: November 2019

Abstract
The article deals with the problems and prospects of using billing systems on SaaS (software as a service) software complex in the housing and utilities sector and civil engineering. As consumers are considered both individuals and construction companies. The construction also uses utilities. These utilities also need to be paid. Currently, “thin billing” is predominantly used in Russia, where each service provider applies its own metering system. The supplier independently performs calculations, and then transfers the information to the Financial Settlement Center in the established format, where after a billing document is drawn up and sent to the consumer of utilities. This format has an advantage only for suppliers, as they can change the tariff corridor and set flexible conditions. From the point of view of the consumer, such a format does not allow tracing all settlement schemes. And in the event of failures or technical errors, the consumer will have to find out the reasons in all instances as before. In order to eliminate bureaucratic processes, it is proposed to implement turnkey billing systems in a “one window” format, where all operations of the housing and utilities industry are consolidated into one platform. Despite proven reliability, billing systems in Russia require large financial investments to ensure complete information security.
Modified Cement Systems for Finishing Coatings
Authors: Tkach Evgeniya , Nurbaturov Kanapiya , Kulibayev Askar 
Published: November 2019

Abstract
The processes of development of finishing coatings on the basis of cement colloidal systems are determined. The influence of processes of modification of colloidal cement systems on the properties of decorative coatings is studied. It is shown that the introduction of modifying additives in combination with mechanical activation allows using the optimal technological parameters of processing to give colloidal cement composites the necessary properties and increase the resistance of protective decorative coatings. The joint activation of the components of colloidal cement adhesive with a modifying additive leads to an increase in the strength of the samples at all times of hardening. Studies have shown that modifying additives and fillers have a positive effect on the thixotropic properties of the system and contributes to the formation of the hydrate with colloidale particles, which leads to hardening of the reinforcement system of a composite. Found that the addition of metakaolin enhanced the activity of fine cement systems. Studies have shown that fillers have a positive effect on the thixotropic properties of the system and contributes to the formation of the hydrate with colloidale particles, through which are formed the spatial packing, which leads to hardening of the reinforcement system of a composite.
Study of the Glaze Layer Surface of Ceramic Tiles Before and After Ion-plasma Deposition of Protective-decorative Coating
Authors: Chumachenko Natalia , Tyurnikov Vladimir , Khafizov Il’nur 
Published: November 2019

Abstract
The protective coating deposited by ion-plasma sputtering have a very vivid aesthetic and decorative properties that make them attractive for solving design problems, and also enhance the operating characteristics of the products (increases strength, hardness, durability). The main stages of obtaining protective and decorative coatings by electric arc method, namely condensation by ion bombardment (CIB), are considered. The properties of the cathode substance, and hence the compounds formed by these substances, depend on their position in the periodic table. The dependence of the coating properties and features of the electronic structure of the material from which the cathode is made is analyzed. The effect of ion-plasma treatment of the surface of glazed ceramic tiles on their properties is studied. The distinctive features of the structure of the glaze layer of domestic and foreign ceramic tiles are revealed.
Basic Theorizes of Regulatory Impact Logistics in Investment and Construction Sphere
Authors: Sborshikov Sergey , Bobin Alexey 
Published: November 2019

Abstract
Modern systems and subsystems of management are characterized by complexity of structure and increasing interlacing between its elements that demands knowledge of specific dynamic properties, both all system, and each subsystem, their behavior in space of a national economy. The paper presents the definition of boundaries for the preservation of dynamic stability, as well as the methodological basis for the development of methods for maintaining the trajectories of sustainable development of logistics management systems in the field of investment and construction activities.
Targeted Management of Performance Indicators of the Park of Control and Measuring Equipment Used in the Construction and Housing and Public Utilities Sectors
Authors: Khayrullin Rustam 
Published: November 2019

Abstract
The mathematical model is presented for the purpose of management the performance indicators of the park of control and measuring equipment used in construction and the housing and public utilities sectors. The model is based on performance management algorithms that ensure a smooth monotonous transition of indicators from current values to the required values for a fixed period of time. The smoothness of the transition is ensured by using the pieces of monotonic degree functions as a reference plan. The developed algorithms make it possible to effectively build preliminary target plans, as well as to make refined plans in the event of underfunding (refinancing) at individual planning stages. The main directions of development of the technical base of park of control and measuring equipment are the modernization of existing samples and types of control and measuring equipment as a result of scientific research and development work, as well as the purchase of new advanced control and measuring equipment to replace obsolete samples of control and measuring equipment. The article presents the results of mathematical modeling of the specified directions of development of the technical base of park of control and measuring equipment.
Formation of the Organizational Structure Based on Project Matrix
Authors: Morozenko Andrey , Krasovskiy Dmitriy 
Published: November 2019

Abstract
This article sums up the results of researches, which are aimed at exploring the ways to form an effective organizational structure of a large-scale construction project based on key events matrix. New methodology of organization design is based on informational paradigm that allows to consider production process as the complex of technological operations based on production ties and logical connection that are synchronized in time and realized by different participants of construction project. This allows to introduce a concept of project’s key events matrix which is a functional model of the organizational structure of project’s executive system. The project matrix is considered as a program graphical representation, which is implemented by management system in order to ensure that organizational structure corresponds to a specific phase of construction project’s implementation.
The article reflects the properties of key events matrix, which helps to improve the quality of organizational design and reduce the time of its creation. Depending on the level of construction project’s decomposition or its detalization, the key events matrix can also have several levels of detalization, so key events are always reflected in the matrix, no matter what level it takes. Thus, we find the scaling effect in the properties of the matrix. In addition, the project’s key events matrix has the property of “stitching”, which means is a possible to supplement it with new events at any stage of the construction project. The use of new methodology in order to form the organizational structure of construction project makes it possible to reduce the production time of design works as well as improve their quality.1. Introduction
Natural and Synthetic Polymers Used in the Preservation of Historical Stone Buildings
Authors: Terlikowski Wojciech , Sobczyńska Ewa , Gregoriou-Szczepaniak Martyna , Wasilewski Kacper 
Published: November 2019

AbstractIn this review, the rules applicable to the preservation of stone monuments, referring both to the selection of appropriate materials (compatibility principle) as well as the repair process itself was discussed. A wide range of natural and synthetic polymers used for reconstruction purposes has been described. An example of the use of polymers for hydrophobization treatment of historic stone structures at one of the archaeological sites in Tyritake, Russia, carried out by Civil Engineering Faculty of the Warsaw University of Technology is also presented.
Experimental Research of Corrosion Effects on Steel Bridges
Authors: Jancula Miroslav , Vican Josef , Spiewak Anna 
Published: November 2019

Abstract
Bridges are significant elements of the transport infrastructure, so they should be in operation throughout the whole design life. Therefore, it is necessary to know the main causes of damages and failures of the bridges. The corrosion of structural steel caused by atmospheric influences as well as the bridge exploitation cause a cross-sectional reduction of structural elements and, consequently, a decrease of the resistance of steel bridge members. The article deals with corrosion and its impact on steel bridge elements in order to use this data for developing actual corrosion model appropriate for design of structures on durability.
Specifics of Bending Priority Road at Unsignalized Intersections
Authors: Kocianova Andrea , Pitlova Eva 
Published: November 2019

Abstract
Unsignalized intersections with a bending priority road are common in Slovakia’s road network. Various specifics are associated with these type of intersections compared to conventional intersections with a straight priority road. There are different priority ranks for traffic streams, more complicated traffic situation, different traffic flow characteristics and driver behaviour. The problem is that only a few studies to date have addressed to this type of intersections and their specifics. Therefore, some traffic flow characteristics such as the speed of major-stream vehicles; and driver behaviour such as compliance with traffic rules, influences of potentially conflicting traffic streams on minor-stream drivers, and the driver gap-acceptance characteristics (critical gaps) at unsignalized four-leg intersection with a bending priority road in Zilina were surveyed. The results show vehicles moving along the bending major street about 40% slower than the city speed limit of 50 kilometres per hour. About 16% to 25% of drivers turning right from the major street did not signal the change of direction. About 16% of priority rule violations were recorded at the least priority minor approach during peak hours and long delays. There are two times more potentially conflicting traffic streams compared to intersection with the straight priority road and the effect of these potentially conflicting streams has ranged between 20% and 60%. The paper demonstrate that the values of critical gaps for the same movements more significant differ according to major/minor street and rank of priority, and critical gap values for straight traffic streams of third and fourth priority rank were determined to be about 0.4 to 0.9 second higher in comparison to the values for conventional rural unsignalized intersections. This new findings cause reduction of minor stream potential capacity and traffic safety.
The Economically Active People in the Transport Process
Authors: Drliciak Marek , Celko Jan , Cingel Michal 
Published: November 2019

Abstract
Traffic-planning process, the traffic management process requires continuous collection and analysis of traffic data. The direct measurement usually determines the volume or speed of the traffic flows. In comprehensive traffic, assessment is necessary to know the causes of mobility and its characteristics, the group of habitants and purpose of the trips, above all. The article deals with the mobility characteristics of economically active people for work and their application to calculations using discrete functions. The data are based on an extensive transport-sociological survey of the mobility of the inhabitants of the Žilina region. The first part of the article is devoted to the basic survey data. The core of the article is the application of discrete choice models in the process of trips generation and modal split.