scholarly journals Prospects of using penetrated cement concrete in the construction of transport infrastructure objects

2021 ◽  
pp. 69-83
Author(s):  
Igor Gameliak ◽  
◽  
Innesa Rutkovska ◽  
Alla Herasimenko ◽  
Marya Filishchuk ◽  
...  
Keyword(s):  
Traffic Safety ◽  
Laboratory Tests ◽  
International Experience ◽  
Transport Infrastructure ◽  
Pervious Concrete ◽  
Concrete Pavements ◽  
Domestic Literature ◽  
Advantages And Disadvantages ◽  
Rainy Weather ◽  
Object Of Study

This article presents the analysis of the international experience of the use of pervious concrete in transport infrastructure. It provides the advantages and disadvantages of the material and the results of personal laboratory tests of relevant concrete samples. The object of the research is the use of pervious concrete in the construction of transport infrastructure. The objective of the paper is to justify the use of pervious concrete in the construction of transport infrastructure by analyzing previous international experience and lab tests of the corresponding concrete samples. Research methods included a analysis of the international and domestic literature, the evaluation of the experience in the use of the pervious concrete, and laboratory tests of the corresponding concrete samples. A review of the world experience connected with research of pervious (draining) concrete, installation and operation of layers of aerodrome surface made of it, proved their technical and economic relevance and effectiveness of their application. Pervious concrete is a material with high open porosity, which provides good sound-absorbing properties and drainage ability together with roughness, smoothness, and transverse friction. These are advantages of pervious concrete pavements, according to foreign studies: a rapid removal of water from the surface of the pavements in case of rain and improved drainage of road and airfield pavements reduce the risk of aquaplaning vehicles and increase traffic safety in rainy weather; increased and stable surface roughness; reduced level of noise provided by vehicles. The draining ability of the pavements makes it almost dry. It also has a high degree of sound absorption. The results of the article can be implemented in various technologies of construction and repair of transport infrastructure. The search for the optimal composition of pervious concrete for its further use in the technology of construction and repair of various objects is the main purpose of predictive assumptions about the development of the object of study.

scholarly journals Introduction of Weight-In-Motion Control System as the component of the “smart” transport infrastructure

2019 ◽  
Vol 97 ◽  
pp. 01038
Author(s):  
Elena Vasilyeva
Keyword(s):  
Control Systems ◽  
Motion Control ◽  
Traffic Safety ◽  
Freight Transportation ◽  
Transport Infrastructure ◽  
Automated System ◽  
Advantages And Disadvantages ◽  
Regional Budget ◽  
The Cost ◽  
Additional Income

The purpose of the research is to estimate the opportunities of such “smart” technology as the automated systems of Wight-in-Motion control (weight-and-dimensional control in the highways), to promote the improvement of the situation with the freight transportation by motor transport. The methods of weight-and-dimensional monitoring are considered. Advantages and disadvantages of the automated system in comparison with the traditional one are revealed. The conclusion is drawn on the cost recovery and financial expediency of the projects of introduction of Wight-in-Motion control systems. Obtaining such economic, ecological and social results as the reduction of cases of excesses of admissible mass of freight, perfecting the logistic activity in our country, collecting additional income for the regional budget, the decrease in the destroying impact on highways, the decrease in the expenses on their repair as well as providing sources for financing of such repair, the decrease in ecological harm from driving of overweighted vehicles, the increase in traffic safety, the reduction of quantity of accidents and life losses, caused by driving of the overweighted vehicles are proved.

scholarly journals Improving Pervious Concrete Pavements for Achieving More Sustainable Urban Roads

2016 ◽  
Vol 161 ◽  
pp. 1568-1573 ◽  
Author(s):  
Alessandra Bonicelli ◽  
Gilberto Martínez Arguelles ◽  
Luis Guillermo Fuentes Pumarejo
Keyword(s):  
Pervious Concrete ◽  
Concrete Pavements

scholarly journals COMPARATIVE ANALYSIS OF COMPACT METHODS REPRESENTATIONS OF GRAPHIC INFORMATION

2021 ◽  
Vol 1 (37) ◽  
pp. 130-143
Author(s):  
O. Gertsiy
Keyword(s):  
Comparative Analysis ◽  
Communication Systems ◽  
Video Data ◽  
Transport Infrastructure ◽  
Practical Significance ◽  
Jpeg 2000 ◽  
Advantages And Disadvantages ◽  
Graphic Information ◽  
The Cost ◽  
And Storage

The main characteristics of graphic information compression methods with losses and without losses (RLE, LZW, Huffman's method, DEFLATE, JBIG, JPEG, JPEG 2000, Lossless JPEG, fractal and Wawelet) are analyzed in the article. Effective transmission and storage of images in railway communication systems is an important task now. Because large images require large storage resources. This task has become very important in recent years, as the problems of information transmission by telecommunication channels of the transport infrastructure have become urgent. There is also a great need for video conferencing, where the task is to effectively compress video data - because the greater the amount of data, the greater the cost of transmitting information, respectively. Therefore, the use of image compression methods that reduce the file size is the solution to this task. The study highlights the advantages and disadvantages of compression methods. The comparative analysis the basic possibilities of compression methods of graphic information is carried out. The relevance lies in the efficient transfer and storage of graphical information, as big data requires large resources for storage. The practical significance lies in solving the problem of effectively reducing the data size by applying known compression methods.

scholarly journals Human factor and traffic safety

2017 ◽  
Vol 18 (7-8) ◽  
pp. 49-52
Author(s):  
Ewa Brożyna
Keyword(s):  
Traffic Safety ◽  
Traffic Engineering ◽  
Traffic Management ◽  
Traffic Accidents ◽  
Road Traffic ◽  
Human Person ◽  
Road Transport ◽  
Transport Infrastructure ◽  
Road User ◽  
Road Design

This article deals with issues in the field of traffic engineering. According to its assumptions, traffic is a system consisting of three inseparable elements which are man, vehicle and road. In this article, the author focuses on the relationship between two of these elements: human as a road user and a path that should be a subordinate of the user’s capabilities and convenience. The first part of the article is an introduction to the topic of the article. There are presented the data on the amount of road traffic accidents caused by human factors and the categories of errors committed by drivers. In the further part there were analyzed the biological factors which have influence on driver’s actions such as sight, attention and reaction time with particular emphasis on the imperfections of those factors which should be taken into account when designing roads and organizing traffic because it lets to provide a higher level of road safety. The purpose of this article is to develop practical conclusions for road design and traffic management that will help to better adjust the road transport infrastructure to the capabilities and natural limitations of the human person. These conclusions are included in the summary.

scholarly journals The impact of traffic flow structure on traffic safety: the case of Slovenian motorways

Transport ◽  
2016 ◽  
Vol 33 (1) ◽  
pp. 216-222 ◽  
Author(s):  
Marina Zanne ◽  
Aleš Groznik
Keyword(s):  
Traffic Safety ◽  
Traffic Accident ◽  
Traffic Accidents ◽  
Road Traffic ◽  
Transport Infrastructure ◽  
Traffic Flows ◽  
Moving Vehicle ◽  
Public Road ◽  
Past Data ◽  
The Impact

Road traffic accident is an accident on a public road in which at least one moving vehicle has been involved and material damage or injury or death has occurred. Traffic accidents occur for various reasons, with one of them being the transport infrastructure and next the condition of traffic environment. Motorways are considered to be the safest roads, which have initially been planned as dedicated roads intended to be travelled only by personal cars, but the evolution of modal split of freight transport in Europe is causing the heterogeneity of traffic flows on these roads, which consequently affects the traffic safety. The aim of this paper is to explore the effects of changing volume and structure of traffic flows on road safety on Slovenian motorways. After the exhaustive analysis of past data, the paper provides different models for forecasting traffic safety on Slovenian motorways.

Modelling in situ shear strength testing of asphalt concrete pavements using the finite element method

2001 ◽  
Vol 28 (3) ◽  
pp. 541-544 ◽  
Author(s):  
Wael Bekheet ◽  
Yasser Hassan ◽  
AO Abd El Halim
Keyword(s):  
Finite Element ◽  
Shear Strength ◽  
Traffic Safety ◽  
Asphalt Concrete ◽  
Material Properties ◽  
Fundamental Property ◽  
Analytical Models ◽  
Strength Testing ◽  
Concrete Pavements

Rutting is one of the well-recognized road surface distresses in asphalt concrete pavements that can affect the pavement service life and traffic safety. Previous studies have shown that the shear strength of asphalt concrete pavements is a fundamental property in resisting rutting. Laboratory investigation has shown that improving the shear strength of the asphalt concrete mix can reduce surface rutting by more than 30%, and the SUPERPAVE mix design method has acknowledged the importance of the shear resistance of asphalt mixes as a fundamental property in resisting deformation of the pavement. An in situ shear strength testing facility was developed at Carleton University, and a more advanced version of this facility is currently under development in cooperation with the Transportation Research Board and the Ontario Ministry of Transportation. In using this facility, a circular area of the pavement surface is forced to rotate about a normal axis by applying a torque on a circular plate bonded to the surface. The pavement shear strength is then related to the maximum torque. This problem has been solved mathematically in the literature for a linear, homogeneous, and isotropic material. However, the models for other material properties are mathematically complicated and are not applicable to all cases of material properties. Therefore, developing a model that can accurately analyze the behaviour of asphalt concrete pavements during the in situ shear test has proven pivotal. This paper presents the development of a three-dimensional finite element model that can simulate the forces applied while measuring the shear strength of the asphalt concrete pavement. A comparison between the model results and those obtained from available analytical models and field measurements proved the accuracy of the developed model.Key words: shear strength, in situ testing, finite element, asphalt, pavement, modelling.

scholarly journals The “man-technology-environment” system in the management of transport service of construction industry

2018 ◽  
Vol 193 ◽  
pp. 01008 ◽  
Author(s):  
Ruben Kazarian
Keyword(s):  
Construction Industry ◽  
Transport Infrastructure ◽  
Visual Modeling ◽  
Emergency Situations ◽  
Economic Fundamentals ◽  
The Us ◽  
Modern Economic ◽  
Object Of Study ◽  
Insight Into ◽  
Protection Of Life

In all countries, transport is considered as the basis for ensuring economic, social, military, environmental and other types of national security. It is provided more than 200 billion dollars in the US, about 200 billion dollars in Japan, more than 100 billion euros in Germany on the development of transport system. In Russia, for these purposes, is spent 14-15 times less. The purpose of environmental security's transportation ensuring - protection of life and health of people, the environment, cargo and vehicles, the sustainability of transport communications and transport infrastructure in normal conditions, in emergency situations and in wartime. Man, in the process of knowing the surrounding material world, forms “speculative” (ideal) ideas about how this world is arranged and how it functions. The basis of such knowledge is intuitive or conscious modeling. The initial level of visual modeling is the multipoint representation of the object of study, so: any phenomenon, object, process, object, definition, and other elements of the conceptual layer of consciousness are put in correspondence with the “point”. The further procedure of visual modeling involves the identification of all the points involved and the interrelations between them (the “logician”), this procedure will provide insight into infographic models of anthropotechnology management in the conditions of modern economic fundamentals and trends in the development of a market economy for the application of anthropotechnical management infographic models. Certification of manual labor's mechanization and transportation of construction cargo and structures (СMIT) - is one of the important construction service packages.

Dynamic Response of a New Railway Emergency Steel Truss Girder under the Moving Train Loads

2010 ◽  
Vol 139-141 ◽  
pp. 2405-2408
Author(s):  
Yao Hui Zhang ◽  
Hai Long Wang
Keyword(s):  
Traffic Safety ◽  
Dynamic Responses ◽  
Coupling Vibration ◽  
Railway Bridges ◽  
Technical Requirements ◽  
Structural Details ◽  
Steel Truss ◽  
Object Of Study ◽  
Steel Truss Girder ◽  
New Situation

In China, a new railway middle-span emergency steel truss girder, which can adapt to the technical requirements about quickly repairing the damaged railway bridges, is developed under the new situation. The old emergency steel truss girder for the railway bridges can not adapt to the current technical requirements. So, the new railway middle-span emergency steel truss girder (hereinafter referred to as the new girder) is developed after hard work. The great changes on the structure, the connections, the structural details and the multi-purpose have taken place on it compared to the existing old similar girder. In this paper, the structure and technical characteristics of the new girder are introduced. In order to improve the new girder’s design, the dynamic responses of the new girder are calculated using the train-bridge coupling vibration theory. In the paper, the 32m-span girder are the main object of study. The vibration-related laws are revealed versus the different train speeds, and the proposals about the largest traffic safety speed are given.

Sign in / Sign up

Export Citation Format

Share Document