In this paper, research on the development of methods for the production of thermoplastic elastomers for construction purposes based on styrene-butadiene-styrene rubber filled with expanded perlite, studied the performance characteristics of these materials. Various methods for the modification of thermoplastic elastomers, their processing modes and methods of controlling their properties are considered.

Keywords: thermoplastic elastomers, expanded perlite, production methods, material characteristics, density, physical and mechanical properties

In the production of construction lime, only a small part of the extracted raw material is suitable for the production of a quality product, while most of the production volume passes into the category of substandard raw materials. The authors of this article developed a project for the processing of carbonate-containing raw materials to produce lime for construction purposes. It is shown that despite the high level of risks and significant financial investments necessary for the organization of new production, the economic efficiency of such a project is obvious, since the costs of eliminating potential environmental disasters greatly exceed the costs of construction of the processing complex.

Keywords: construction lime, sedimentary rock, carbonate-containing raw materials, dump, aerated concrete autoclave hardening, energy efficiency, risk, environmental disaster

In this article we consider issues of structure designing of reinforced concrete rods with cirle cross-section. There are theoretical aspects of rod torsion in the article. We analyse actual codes and standards and found out that there is no any methods of rod calculation with circle cross-section. Methods of calculation are given in the article. Field tests of rod torsion were carried out. In article you can see main points of test, the procedure of test and results.

Keywords: rod torsion, rotational moment, roll, reinforced concrete, verification test in situ, designing of reinforced concrete rods, shear reinforcement

This article is devoted to the issue of rational exploitation of space in cities with a large population. It is known that a sharp decrease in the area of land plots within the city limits accessible to public use leads to a decrease in the quality of life of citizens. The authors of this article are considering in detail the possibility of using roofs as additional public spaces. The article discusses such methods for using roofs as solar power generation, rainwater harvesting, apiaries and poultry farms, sports complexes, playgrounds, vegetable farms, etc. Particular attention is paid to the so-called ""green roofs"", their design, classification, application. The authors of this article talk about the numerous advantages of green roofs, such as the ability to manage wastewater, reduce the influence of “urban heat islands”, create new public spaces, create new jobs, increase energy efficiency, reduce noise, increase market value, etc. However, the authors of this article did not forget to show the disadvantages of green roofs. The main disadvantages of this project are the higher initial cost, the increased load on the foundation and walls, and the increased costs of operation. Nevertheless, the authors draw conclusions that the advantages of green roofs far exceed their disadvantages and the further development of this direction is very important and promising. 3. Installation of active seismic resistance monitoring systems (active method). Such an active feedback control system contains three main elements: a. Sensors for measuring external excitation; b. Computer hardware and software; c. Drives to provide the necessary control forces. At present, the most popular is the hybrid method of semi-active control, which combines the advantages of a seismoisolating basement with passive shock absorbers, which is much more economical in comparison with the active method.

Keywords: city, roof in operation, green roof, dense urban development, energy saving, ecology, green building, green building

The article discusses the results of the development of a pilot plant that allows for the process of purification of multicomponent wastewater containing organic impurities of the phenol series based on a combined method in a single apparatus, consistently combining the process of ozonation with the sorption post-treatment of oxidized wastewater, ensuring continuity of the process and allowing the reuse of residual ozone, which greatly increases the degree of wastewater treatment and eliminates the need bridge of ozone destruction. The degree of purification achieved in this way allows the treated wastewater to be directed to the circulating water supply.

Keywords: multicomponent wastewater, wastewater treatment from organic compounds of the phenol series, ozonation, sorption, adsorption, pilot plant

The accumulated experience of the advanced enterprises of the construction industry and numerous developments of design and research organizations are the basis for the transition to full automation of production of precast concrete structures of the new generation, to the creation of automatic plants that perform the entire production cycle (from receiving raw materials to sending products to the consumer). Technical re-equipment provides a significant improvement in the activities of precast concrete plants, but does not create conditions for direct overgrowth. Automation of the process of production of reinforced concrete requires the use of automated tools to control the quality characteristics of concrete products, information from which can be used for optimal production management. In order to ensure the development of production of reinforced concrete products and structures by improving existing and finding new, improved methods of production of precast concrete products, it is necessary to use robotics, computerization and electronics.

Keywords: automation, automation system, dispatching automatic control, improvement of technological lines, organization of construction production, construction, modern technologies, BIM technologies, robotics, electronics, technological re-equipment

Discusses the results of experimental rimentale-theoretical research of the building frame based on the tone-kostenich cold-formed profiles. In the course of research, the stress-strain state of the RA-we from thin-walled profiles was studied; the method of preliminary modeling of structural elements using FEM was developed; the design of the test bench and the composition of the test program of frames from thin-boned steel pro-files was developed; the comparison of the results of theoretical and experimental studies; the completion of numerical calculations of the con-struction nodes; the features of work under load and its compliance with the applied design scheme are studied.

Keywords: thin-Walled profile, construction Tests, finite element Method, Test bench

Is the result of long-term observations over the condition of water objects of the city of Rostov-on-Don. Status of water resources in the city of Rostov-on-Don, did not meet the requirements of the normative acts in the field of environmental protection Wednesday. The ability of the river Temernik River self-clean does not provide restore disturbed ecological balance and require the implementation of additional measures aimed at improving the condition of the water body. By changing the parameters of the river Temernik River and used for purifying algae observed decrease of contaminants into the River Don. Considered the objective of improving water hydraulics, hydraulic structures to ensure proper ecological state of these objects. Sources of water pollution are also unorganized flow of surface water from contaminated areas within the city, that degrades the performance of ecological purity of the hydrosphere region, its water balance. Hydrological and hydraulic processes in the urbanized territories are closely linked to environmental security. Address the issues of environmental security of waters of megalopolis based on monitoring the quality of natural waters in natural waters, developing recommendations and spending on their basis for the conservation and improvement of the status of water resources of the city, ensuring their safe use for the needs of the city's population.

Keywords: Keywords: water, water object conditions, hydraulic structure, water quality, natural water, River, spring, ecological situation, sources of pollution, chemical composition, monitoring, contaminants, sampling, hydrochemical study

The introduction of RPP to 3% by weight of the dry concrete mixture is accompanied by a decrease in the compressive strength of fine-grained concrete aged from 28 days to 37%, and after 75 cycles of freezing and thawing - up to 46%. The decrease in tensile strength in bending at the age of 28 days was 25%, after 75 cycles - up to 23%. The dependence of the initial modulus of elasticity of concrete on the compressive strength remains virtually unchanged after 75 cycles of freezing and thawing. The dependence of the adhesion of MZB to the concrete base with increasing dosage of RPP is ambiguous. The maximum increase in adhesion to the concrete base after 28 days of curing in NU and after 75 cycles of freezing and thawing was 26%. An increase in RPP dosage to 3% leads to a decrease in the initial elastic modulus of MZB to 26% after 28 days of curing in NU and to 32% after 75 cycles of freezing and thawing.

Keywords: dry building mixes, redispersible polymer powders, adhesion to the base, elastic modulus, tensile strength, freezing and thawing cycles

Improving the structure of the management apparatus at modern construction enterprises is a necessity in conditions of increased competition in the market of products and services. The size, conditions of work, organizational and legal forms determine the production structure of construction companies. The growth of production leads to the optimization of the organizational structure of the construction company management, corresponding to its goals and objectives. Therefore, there is an increased need to review the existing management structures of construction organizations, which serve as a new modern socio-economic environment. Optimized organizational structures of construction companies and organizations should be easy to manage and be able to adapt to the changing economic conditions of the modern market.

Keywords: management apparatus, construction production, organizational structure of management, functional divisions of management apparatus

The paper highlights the importance of the contingency-focused development of organizational and technological solutions for strengthening reinforced concrete columns based on multiple criteria. The main criteria for optimal technology selection are identified, and the algorithm for the performance of works is presented. The complexity of selection unaided by computerprograms is brought to notice.

Keywords: strengthening of columns, multiple criteria, optimal technology selection, structuring, expert reviews, performance algorithms

This article presents a simulation of the design scheme of a monolithic floor slab in the LIRA-SAPR 2013 software package. The calculation is based on the finite element method. The calculation of the floor slab is made as part of the entire building, taking into account the rigid coupling of the columns with the slab. The analysis of the results of static analysis is carried out and the selection of reinforcement for the slab is performed.

Keywords: program complex, LIRA-SAPR 2013, design scheme, finite element method, static analysis, selection of fittings, monolithic slab, overlap, design combination of forces

If defects are found in the foundation of an already constructed building or if the load on it increases, it is necessary to examine it and, if necessary, reconstruct it. The foundation of the building is a supporting building structure and the safety of the entire structure as a whole directly depends on it, therefore it is so important to make repairs on time. This article provides one of the methods used in construction to strengthen the strip foundation by adding broadening plates.

Keywords: strip foundation, reconstruction, broadening plates, reinforcement of foundations, reinforcement, buttress

The problems of radiation hazard of nuclear medical facilities taking into account all stages of the life cycle are Considered. Substantiates the important role of the concrete biological shielding to ensure radiation and environmental safety of staff, patients, the public and the environment. The necessity of optimization of a choice of concrete biological shielding for radiation parameters. To justify the need and the possibility of optimizing the choice of the concrete biological shield, the results of computational studies of the activation characteristics of the three formulations of protective concrete, widely used for the construction of the canyons biological shielding of medical cyclotrons. The possibility of reducing the volumes of radioactive waste and their categories at the decommissioning stage is shown, which will ensure the reduction of financial costs for the disposal of radioactive waste during biological shielding dismantling. Scheduled tasks for further research.

Keywords: nuclear medicine, cyclotron, shielding concrete, induced activity, chemical composition, optimization, radioactive waste, life cycle, decommissioning

“The article was published as part of the implementation of the program of the International Forum“ Victory May 1945 ”.The article deals with the problem of a reasonable redistribution of the pedestrian and transport space of the street, a balanced use of the territory in order to more efficiently regulate traffic and pedestrian flows, as well as to take into account statistical data on the use of street space, taking into account the time of day, the location and methods of using this space

Keywords: pedestrian space, sidewalk, transport space, pedestrian, parquet, design of architectural environment, urban scenario

In the article authors considered properties of materials, which used for liquidation overflows and leaks of oil product in urban environment. Authors analyzed regulatory and technical documentation. It was determined basic disadvantages of materials (sand, sawdust). It was delivered the task of developing criteria to properties of sorbents for collecting oil products in urban environment and search sorbents in according to developed criteria.

Keywords: material, sand, sawdust, sorbent, collecting, oil product, overflow, leak, urban environment

The task of identifying the properties of concrete and the location of damage in the layout structures of the beam type based on the application of experimental vibration analysis is considered. As a simple analysis model, beam constructions are defect-free and with defects. Based on the experimental approach, the model oscillations with shock and vibration excitation are analyzed. Based on analytical modeling, the dynamic modulus of elasticity, the speed of sound in the beam, the location of the defect are calculated. A technique and an example of determining the location of a defect in beam-type structures is presented. The article was published as part of the implementation of the program of the International Forum "Victorious May 1945"

Keywords: vibration diagnostics, identification, beam type construction, defect, experimental approach, analytical modeling, vibration excitation

The possibility of using an effective insulation of rigid slabs of non-combustible basalt insulation ROCKWOOL not only to ensure the thermal properties of the outer walls, but also to improve the plasticity of the facades of buildings, due to the device protruding on the facade of vertical pilasters, horizontal belts, volumetric geometric patterns using the facade system ROCKFACADE. According to the results of the study on this topic, the conclusions are given.

Keywords: effective insulation, non-combustible mineral wool ROCKWOOL insulation, outer wall, plastic, building facade, pilasters, belt, ROCKFACADE

The problem of calculating rods for vector perturbations consisting of five components is solved: 1. kinematic transverse vibrations of the left end; 2. kinematic transverse vibrations of the right end; 3. dynamic bending moment at the left end; 4. dynamic bending moment at the right end; 5 dynamic uniformly distributed lateral load along the length of the rod. The transfer functions from each disturbance are obtained separately. Using these functions, we obtained the elements of the spectral matrix for stationary random processes, taking into account their correlation. The most common types of processes are considered: exponentially correlated random process; process with latent periodicity (with characteristic frequency); truncated white noise. The formula for obtaining the dispersion of displacement of sections is shown.

Keywords: rod, harmonic oscillations, natural frequency, kinematic disturbances, dynamic disturbances, transfer function, correlation matrix, random process, delta-correlated random process, latent periodicity, truncated white noise