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Full-Text Articles in Civil and Environmental Engineering
Festigkeitsbeschreibung Des Schwerbetons Auf Alkalischlacken – Bindemittel, A Tulaganov, S Hodjaev, A Sultanov, B Tulaganov, B Otakulov, N Hodjaev, D Abdasov
Festigkeitsbeschreibung Des Schwerbetons Auf Alkalischlacken – Bindemittel, A Tulaganov, S Hodjaev, A Sultanov, B Tulaganov, B Otakulov, N Hodjaev, D Abdasov
The Scientific-Practice Journal of Architecture, Construction and Design
The article describes the laws of describing the strength of heavy concrete based on non-calcined alkaline binders. It is shown that strength is written as a function of the generalized argument.
Calculation Of Operational Suitability And Reliability Of Structures, Nodira Ziyayevna Saatova, Abdurakhman Asimovich Ishankhodjaev
Calculation Of Operational Suitability And Reliability Of Structures, Nodira Ziyayevna Saatova, Abdurakhman Asimovich Ishankhodjaev
Journal of Tashkent Institute of Railway Engineers
With the acquisition of independence of our Republic in the system of transport communications, great importance was attached to the qualitative improvement of the design, construction, and operation of aboveground structures. Many tasks have been performed to increase the reliability and strength analysis of these bridges. Along with these, improving methods for calculating the resource of artificial structures in the system of transport communications are required. The Strategy for the Further Development of the Republic of Uzbekistan, including the following tasks: "... implementation of targeted programs for the development and modernization of road transport, engineering, communication, and social infrastructures, ...". …
Production Of Building Materials Based On Waste Industry, Uchqun Abdullayevich Gaziyev
Production Of Building Materials Based On Waste Industry, Uchqun Abdullayevich Gaziyev
Journal of Tashkent Institute of Railway Engineers
The article describes the production technology of building materials based on industrial waste. Innovative technologies in the production of building materials, using industrial waste, are fully consistent with the research carried out at the Department of Technology of Building Materials, Products and Structures of the Tashkent Architectural and Construction Institute under the scientific supervision of the author of this article. Scientific developments in innovative technologies were carried out in several areas in the field of building materials and products. Based on the waste from the Angren coal deposit and local rocks, quartzite and dacitic porphyry, a gravel-like porous aggregate has …
About The Technology Of Making Reinforced Concrete Sleep By Heating Concrete At Low Temperature, Turgunbaev Urinbek Jamolovich, Movluda Umirova
About The Technology Of Making Reinforced Concrete Sleep By Heating Concrete At Low Temperature, Turgunbaev Urinbek Jamolovich, Movluda Umirova
Journal of Tashkent Institute of Railway Engineers
The article discusses the properties of cement stone with the use of complex chemical additives to improve the technology for the production of sleepers from prestressed concrete. With the use of superplasticizer, the volume of intergranular space and, consequently, capillary porosity, which is a determining factor for both strength and frost resistance and corrosion resistance of concrete, are significantly reduced. Also, during thermo-wet processing, at a temperature of 40 ° C, there was no decrease in the strength of cement stone and sufficient strength at the initial stage of the curing period, 36 MPa with the addition of Glenium 27 …
Research Of Properties Of Composite Elastomeric Material Filled With Montmorillonite Of Karakalpakstan With Nanoparticles, Bakhadir Bakhramovich Kakharov, Akhmadjan Ibadullaev, Elmira Ubaydullayevna Teshabaeva, Marziya Begdullayevna Muftullayeva
Research Of Properties Of Composite Elastomeric Material Filled With Montmorillonite Of Karakalpakstan With Nanoparticles, Bakhadir Bakhramovich Kakharov, Akhmadjan Ibadullaev, Elmira Ubaydullayevna Teshabaeva, Marziya Begdullayevna Muftullayeva
Journal of Tashkent Institute of Railway Engineers
The paper presents the results of studies on the effect of montmorillonite of Karakalpakstan with nanoparticles on the specific properties of composite elastomeric materials based on a mixture of rubbers SKMS-30 ARKM-15 (70%) and SKN-26 (30%). It was found that with an increase in the filler content in rubber, the recoverability of the rubber compound after deformation is significantly reduced. Moreover, the ability of the system to accumulate the energy of elastic deformation, i.e. the swelling of the extrudate (Re), largely depends on the specific geometric surface (Ssp) of montmorillonite of Karakalpakstan. Studies of the properties of rubbers showed that …
Mathematical Modeling Of The Structure Cellular Concrete, Anvar Ishanovich Adilkhodjayev, E.V. Shipacheva, S.S. Shaumarov
Mathematical Modeling Of The Structure Cellular Concrete, Anvar Ishanovich Adilkhodjayev, E.V. Shipacheva, S.S. Shaumarov
Journal of Tashkent Institute of Railway Engineers
The article presents the developed mathematical model of the structure of cellular concrete, which allows one to establish pore sizes and characteristics of inter-pore walls corresponding to the required thermal conductivity and strength of the material, and the results of its numerical implementation are presented
Research Of System Conditions For Formation Of Failure On Mathematical Models By The Results Of The Research Of Reinforced Concrete Bridges, E.T. Yaxshiev, F.Z. Zokirov, A.B. Karimova
Research Of System Conditions For Formation Of Failure On Mathematical Models By The Results Of The Research Of Reinforced Concrete Bridges, E.T. Yaxshiev, F.Z. Zokirov, A.B. Karimova
Journal of Tashkent Institute of Railway Engineers
Based on the data of field surveys, the results of assessing the state of reinforced concrete span structures of bridges and characteristic defects that occur in the structure during operation are presented. An analysis of the results of inspections and periodic inspections responsible for the operation of artificial structures shows that a significant part of reinforced concrete spans has various types of defects and damage to load-bearing structures. Studies show that defects have a significant impact on the operational properties of reinforced concrete spans, leading both to a limitation of the speed regime of train movements and to the emergence …
Investigated The Strength Of Rolling Stock As A Fuzzy Function, M.L. Waail, R.V. Rahimov
Investigated The Strength Of Rolling Stock As A Fuzzy Function, M.L. Waail, R.V. Rahimov
Journal of Tashkent Institute of Railway Engineers
In this paper we use Fuzzy Set Theory to solve one of the essential problems in Railway Engineering: estimate the strength of rolling stock. As known, the strength of, any, rolling stock depends upon several factors that cannot determine them accurately. Therefore, we can consider them as fuzzy factors. The strength of any rolling stock can be changed depending on its operating conditions and the intensive of operation, that can consider as fuzzy factors too. A new proposal method developed depending on Fuzzy Set Theory to estimate the strength of mobile equipment or to compare between several rolling stocks for …
Theoretical Aspects Of Structural And Simulation Modeling Of The Macrostructure Of Composite Building Materials, Anvar Ishanovich Adilkhodjayev, I.M. Mahamataliev, S.S. Shaumarov
Theoretical Aspects Of Structural And Simulation Modeling Of The Macrostructure Of Composite Building Materials, Anvar Ishanovich Adilkhodjayev, I.M. Mahamataliev, S.S. Shaumarov
Journal of Tashkent Institute of Railway Engineers
At the present time, the description of the joint work of multi-component, high-quality concretes in the framework of the structural and simulation modeling of cement composites is a very topical task of building materials science. In the context of the solution of the above problems, theoretical aspects of structural and simulation modeling are presented on the example of the developed program "Concrete-technology", which allows to predict the strength properties of multicomponent high-quality concrete at the macro structural level.