The work considers the studies carried out on the corrosion activity of tap water in St. Petersburg. The studies were carried out under static conditions on tap water of St. Petersburg and water extracts obtained as a result of contact of source water with granular charges “Sorbent MS” and “Calcite”.

Evaluation of water corrosion activity according to Langellier and Riesner design indices is qualitative, indirect and indicative, however, does not provide quantitative indicators of corrosion rate in relation to structural materials of pipelines and valves of water supply systems. To obtain indicators of general and pitting corrosion of unstabilized and stabilized water, a corrosion meter was used, the principle of operation of which is based on the method of linear polarization resistance.

The work contains indicators of general and pitting corrosion taken using a corrosion meter, indicators of tap water and water extracts of granular loads “Sorbent MS” and “Calcite”.

Keywords: corrosion activity, linear polarization resistance method, tap water, water extraction, corrosionmeter.

Rostislav Baruzdin (St. Petersburg, Russian Federation) – Postgraduate Student of the Department of Water Use and Ecology, Senior Lecturer of the Department of Electricity and Electrical Engineering, St. Petersburg State University of Architecture and Civil Engineering
(5/8, Egorova str., 190005, St. Petersburg, е-mail: r.baruzdin@inbox.ru).

1.   Rukobratskii N.I., Baruzdin R.E. Doochistka kholodnoi i goriachei vody dlia mnogokvar-tirnykh domov i zhilykh kompleksov v Sankt-Peterburge [Post-treatment of cold and hot water for apartment buildings and residential complexes in St. Petersburg]. Voda i ekologiia: problemy i resheniia, 2019, no. 4 (80), pp. 54–63.

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7.   Anufriev N.G. Novye vozmozhnosti primeneniia metoda lineinogo poliarizatsionnogo soprotivleniia v korrozionnykh issledovaniiakh i na praktike [New possibilities of using the method of linear polarization resistance in corrosion research and in practice]. Korroziia: materialy, zashchita, 2012, no. 1, pp. 36–43.

8.   Anufriev N.G. Vozmozhnosti i opyt primeneniia sovremennogo metoda poliarizatsionnogo soprotivleniia dlia korrozionnogo monitoringa v teplosnabzhenii [Possibilities and experience of using the modern method of polarization resistance for corrosion monitoring in heat supply]. Praktika protivokor-rozionnoi zashchity, 2015, iss. 1 (75), pp. 40–44.

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13. Kul'skii L.A., Strokach P.P. Tekhnologiia ochistki prirodnykh vod [Technology of natural water purification]. Kiev, Vishcha shkola, 1986, 352 p.

This article presents a new approach to the development of a material that relates to the production technology of non-toxic high-silica heat-insulating and fire-resistant materials. Structurally, it is a composition of a mixture of dispersed fillers in combination with a binder made of sodium water glass with a density of ρ = 1.45 g/cm3, a basicity modulus of 2.8 (composition: SiO2 = 29.6 %, Na2O = 10.6 %, water-rest). As silicon-containing fillers, the use of quartz dust, mineral fiber filler and discrete glass fiber (length 4–6 mm) is technically justified. The material is an inorganic highly filled heterogeneous structure obtained by ultrasonic treatment in mixing technology followed by 2-stage curing at normal and elevated temperatures.

The finished high-thermal composition has a low thermal conductivity of 0.025-0.031 W/m∙K at 200 °C and a density of ≈1000 kg/m3, high mechanical characteristics and stability under open flame conditions, without the release of toxic gaseous products.

Modification of high-silicon components of the formulation with a special composition and in the presence of a binder based on sodium liquid glass leads to a material that is relatively light, has water repellency and thermal insulation properties, increased fire resistance, which does not tend to release toxic components with improved strength characteristics, which is a hallmark of its counterparts.

The development of formulations of non-combustible, numinescent and non-toxic materials is a task of particular importance both for energy-saving technologies and for the protection of various units and structures in conditions of extreme fire hazard, especially for habitable objects.

Keywords: high-silica coatings, composite materials, heat-insulating material, fire resistance, strength, density, mineral fillers, liquid glass.

Nataliya Ryabinina (Perm, Russian Federation) – Chief Specialist, Research and Development enterprise “Polis” (281A, Solikamskaya str., 614054, Perm, e-mail: natochka59@yandex.ru).
Shaydurova Galina (Perm, Russian Federation) – Chief Officer, Doctor of Technical Sciences, Chief Chemist, Research and Development enterprise “Polis” (281A, Solikamskaya str., 614054, Perm, e-mail: sgi615@mail.ru).
 

1. 1.   Askadskii A.A., Popova M.N., Kondrashchenko V.I. Fiziko-khimiia polimernykh materialov i metody ikh issledovaniia [Physico-chemistry of polymer materials and methods of their research]. Moscow, Assotsiatsiia stroitel'nykh vuzov, 2015, 407 p.
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The article discusses the state of metrological support for testing building materials and products in testing laboratories that provide quality control in the production of building materials. It is shown that the existing level of metrological support for physical and mechanical tests does not fully comply with modern metrological requirements. This situation negatively affects the reliability of the test results of building materials, their quality, and ultimately the provision of safe conditions for human life. In conclusion, the author proposes top-priority, in the opinion of the author, ways to improve the level of metrological support for testing building materials in testing laboratories.

Keywords: construction laboratory, building materials, tests, measurement method, measuring instrument, test equipment, standard samples, quality indicators of measurement methods, interlaboratory comparative tests.

Natalia Vankova (Perm, Russian Federation) – Postgraduate Student, The D.I. Mendeleev All-Russian Research Institute of Metrology (19, Moskovsky av., 190005, St. Petersburg, e-mail: vankovaperm@mail.ru).

1. Lifanov I.S., Sherstiukov N.G. Metrologiia, sredstva i metody kontrolia kachestva v stroitel'stve: spravochnoe posobie [Metrology, means and methods of quality control in construction: a reference guide]. Moscow, Stroiizdat, 1979, 223 p.
2. Dormidontova T.V., Samysheva I.M. Kontrol' kachestva vypolneniia stroitel'no-montazhnykh rabot [Quality control of construction and installation works]. Internauka, 2018, no. 12(46), pp. 54-56.
3. Pivovarov V.A. Mery po povysheniiu dostovernosti ispytanii stroitel'nykh materialov v stroitel'nykh proizvodstvennykh laboratoriiakh [Measures to improve the reliability of testing building materials in building production laboratories]. Mir izmerenii, 2015, no. 1, pp. 7-12.
4. Borodin V.A. Izmereniia v stroitel'stve v svete trebovanii zakonodatel'stva [Measurements in construction in the light of legal requirements]. Mir izmerenii, 2015, no. 1, pp. 3-6.
5. Pivovarov V.A. Metody kontrolia prochnosti betona na osnove izmerenii poverkhnostnoi tverdosti, problemy metrologicheskogo obespecheniia izmerenii [Methods for controlling the strength of concrete based on measurements of surface hardness, problems of metrological assurance of measurements]. Mir izmerenii, 2017, no. 1, pp. 6-13.
6. Pivovarov V.A. Sostoianie i tendentsii razvitiia etalonnoi bazy i normativno-metodicheskikh dokumentov po izmereniiam tverdosti stroitel'nykh materialov [Status and development trends of the reference base and regulatory and methodological documents for measuring the hardness of building materials]. Pribory, 2013, no. 12(162), pp. 54-59.
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8. Roife V.S. Vlagomery stroitel'nykh materialov (metrologicheskie aspekty) [Moisture meters for building materials (metrological aspects)]. Kontrol'no-izmeritel'nye pribory i sistemy, 2003, no. 12, pp. 34-35.
9. Roife V.S., Zaporozhets A.S. Metrologicheskoe obespechenie v oblasti vlagometrii stroitel'nykh materialov [Metrological support in the field of moisture measurement of building materials]. Metrologiia, 2012, no. 11, pp. 48-56.
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The level of snow in some regions of Russia reaches considerable values, therefore, for the safety and active life of people, it is necessary to dispose of snow rationally and economically advantageous. This is possible by increasing the density of snow.

The purpose of the work was the development, patenting, manufacturing and testing of a new "snow compaction device". The task was to create an extremely simple, cheap, mobile and easy-to-use installation for compacting snow, which is essentially a heated and pressing formwork. It contains a volumetric housing formed by the upper and side walls, two of which remain stationary during pressing, and the other two are movable due to the mechanical drive of the sealing mechanism consisting of screw studs with nuts.

The fixed walls of the housing are a plywood base with a thickness of 18 mm with grooves 3 mm deep, into which a HeatUp WFOH 220/20 heating cable with a length of 10 m and a power of 200 watts is inserted. The movable side walls 3 were made of a 1520 ´ 1520 plywood sheet cut in half, 21 mm thick, 40 m of 22PV/15700 cable with a power of 700 Watts was inserted into the grooves. The cables are covered with a 0.4 mm thick galvanized steel sheet. The total power of heating cables is 2 kW.

Four snow blocks were made with different formation parameters. As a result, the technology of manufacturing snow blocks of high density (up to 540 kg/m3) and high strength, sufficient for lifting by crane and subsequent transportation, was worked out, and a rational method of pressing snow was found.

The assessment of the compressive strength of snow blocks showed that with the help of the device it is possible to erect walls up to 3.5 m high. The device placed on the end allows you to make blocks with a height of 1.5 m, so then it was decided to build up the snow block. The PNRPU logo was made.

Keywords: snow, snow compaction, snow utilization, snow construction.

Sof'ya Myrzina (Perm, Russian Federation) – Student, Faculty of Civil Engineering, Perm National Research Polytechnic University (29, Komsomol'sky av., 614990, Perm, e-mail: mirzina.sofi@yandex.ru).

Kseniya Ozerova (Perm, Russian Federation) – Student, Faculty of Civil Engineering, Perm National Research Polytechnic University (29, Komsomol'sky av., 614990, Perm, e-mail: ksenyaozerowa2016@yandex.ru).

Oleg Zverev (Perm, Russian Federation) – PhD of Technical Science, Associate Professor
of the Department of General Physics, Perm National Research Polytechnic University
(29, Komsomol'sky av., 614990, Perm, e-mail:ckko-smt2@pstu.ru).

Anatoliy Perminov (Perm, Russian Federation) - Doctor of Physical and Mathematical Sciences, Head of the Department of General Physics, Perm National Research Polytechnic University (29, Komsomol'sky av., 614990, Perm, e-mail: perminov1973@mail.ru).

1. Kuldoshina V.V., Zhogal' A.V., Lupunchuk M.Yu. Sovremennye podhody k resheniyu problem utilizacii snega [Modern approaches to solving the problems of snow disposal]. Mezhdunarodnyj tekhniko-ekonomicheskij zhurnal, 2018, no. 5, pp. 79-84.

2. Druzhakina O.P. Ekologicheskie aspekty utilizacii snezhnyh mass s gorodskih territorij [Environmental aspects of the disposal of snow masses from urban areas]. Upravlenie tekhnosferoj, 2019, vol. 2,
no. 1, pp. 91-105.

3. Strokin A.S., Chudajkin A.D. Polyakov R.S. Ekologicheskie problemy utilizacii snega v gorode [Environmental problems of snow disposal in the city]. Vysokie tekhnologii v stroitel'nom komplekse, 2019, no. 2, pp. 56-60.

4. Kazakova E.N., Lobkina V.A. Zavisimost' plotnosti otlozhennogo snega ot ego struktury i tekstury [Dependence of the density of deposited snow on its structure and texture]. Kriosfera zemli. 2018, vol. 22. no. 6. pp. 64-71.

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6. Nezamaev A.S., Nezamaeva N.N. Opredelenie racional'noj plotnosti snezhnyh blokov dlya ih transportirovki [Determination of the rational density of snow blocks for their transportation]. Nazemnye transportno-tekhnologicheskie kompleksy i sredstva. Materialy Mezhdunarodnoj nauchno-tekhnicheskoj konferencii, Tyumen, Tiumenskii industrial'nyi universitet, 2015, pp. 230-233.

7. Chernyakova O.O., Kiselev P.V., Ponyatov A.G. Issledovaniya uplotneniya snega [Snow compaction studies]. Nazemnye transportno-tekhnologicheskie kompleksy i sredstva. Materialy Mezhdunarodnoj nauchno-tekhnicheskoj konferencii, Tyumen, Tiumenskii industrial'nyi universitet, 2016. pp. 330-334.

8. Egorov A.L., Merdanov Sh.M., Zakirzakov G.G., Logvinskij M.P. Ustrojstvo dlya uplotneniya i pogruzki snega [Device for compaction and loading of snow]. Patent Rossiiskaia Federatciia
no. 2005106938/11 (2006).

9. Merdanov Sh.M., Karnauhov N.N., Orzhahovskij V.G., Zakirzakov G.G., Fatullaev E.F., Egorov A.L. Snegouborochnaya mashina [Snow removal machine]. Patent Rossiiskaia Federatciia no. 2002101577/28 (2003).

10. Egorov A.L. Obosnovanie rabochih parametrov snegouborochnoj mashiny s uplotnyayushchim rabochim organom [Justification of the operating parameters of a snowplow with a sealing working body]. Abstract of Ph. D. thesis. Tyumen, 2004, 15 p.

11. Karnaukhov N.N., Merdanov Sh.M., Zakirzakov G.G., Orzhakhovskiy V.G., Petrovets V.S. Ustroystvo dlya izgotovleniya snezhnykh blokov [Device for making snow blocks]. Patent Rossiiskaia Federatciia no. 2003125101/11 (2005).

12. Bykov V.Yu. Opredelenie parametrov protsessa pressovaniya snega i vakuum-pressovogo oborudovaniya dlya snegouborochnoy mashiny [Determination of parameters of the process of pressing snow and vacuum-pressing equipment for a snowplow]. Abstract of Ph. D. thesis. Moscow, 2010, 19 p.

13. Bykov V.YU., SHestopalov K.K. Ustrojstvo dlya uplotneniya snega [Snow compaction device] Patent Rossiiskaia Federatciia no. 2010125353/21 (2010).

14. Zverev O.M., Perminov A.V. Ustrojstvo dlya uplotneniya snega [Snow compaction device] Patent Rossiiskaia Federatciia no. 2021123272 (2022).

15. Zadorina L.V., Zverev O.M., Muratova V.A., Oborina E.M., Funtyaeva V.V., Karavaev V.V. Pnevmotransportnaya ustanovka dlya uborki snega s kryshi [Pneumatic transport installation for snow removal from the roof] Patent Rossiiskaia Federatsiia no. 2019129679 (2020).

16. Muratova V.A., Funtyaeva V.V., Zverev O.M. Mobil'nyj pnevmotransporter dlya uborki snega i musora s krysh i pridomovyh territorij [Mobile pneumatic transporter for snow and garbage removal from roofs and house areas]. Construction and Geotechnics, 2021, vol. 12, no. 2, pp. 42-50. DOI: 10.15593/2224-9826/2021.2.04

17. Zadorina L.V., Zverev O.M., Muratova V.A., Perminov A.V. Ustrojstvo dlya udaleniya sosulek i naledej [Icicle and ice removal device] Patent Rossiiskaia Federatciia no. 2020122158 (2020).

18. Zadorina L.V., Muratova V.A., Zverev O.M. Nihromovyj ledorez protiv naledej i sosulek [Nichrome ice cutter against ice and icicles] PNRPU Bulletin. Applied ecology. Urban development, 2018, no. 3, pp. 44-55.

The development of industry, new types of production, the construction industry often negatively affects the quality of habitat objects. In large industrial centers, one of the main sources of pollutant formation is road transport. Vehicle emissions include components such as CO, SO2, NO2 and particulate matter TSP, PM2,5, PM10. Automobile emissions containing fine particles worsen the quality of atmospheric air and adversely affect public health.

Measurement of the concentrations of particulate matter of fine fractions in the atmospheric air near roads and large intersections is an urgent environmental problem.

A study to determine fine fractions was conducted in a large industrial center from May to September 2021.

Measurements were taken with the DustTrak Model 8533 aerosol analyzer. The instrument measures fine particle fractions in real time. This makes it possible to conduct a prompt assessment of the atmospheric air at a given moment in a certain area.

Instrumental measurements of mass concentrations of particulate matter TSP, PM2,5, PM10 in the atmospheric air of a large industrial center were carried out. The flow of fine particles was analyzed not only from the exhaust gases of vehicles, but also from the type of road surface. The effect on changes in the concentrations of particulate matter in the atmospheric air, located near the studied point of construction work, was revealed. It is noted that under conditions of heavy traffic of vehicles, the amount of fine particles emitted into the atmospheric air is higher than under conditions of traffic congestion.

Summarizing the data obtained, it should be noted that the mass concentrations of particulate matter TSP, PM2,5, PM10 did not exceed the hygienic standards in the atmospheric air, but had values higher than at the control point.

Keywords: fine particles, TSP, PM2,5, PM10, atmospheric air, vehicle emissions, road surface.

Tatyana Ulanova (Perm, Russian Federation) – Doctor of Biological Sciences, Head of the Department of Chemical and Analytical Research Methods, Federal Scientific Center for Medical and Preventive Health Risk Management Technologies (82, Monastyrskaya str., 614045, Perm, e-mail: ulanova@fcrisk.ru).

Marina Antipeva (Perm, Russian Federation) – Head of the Laboratory of Methods for the Analysis of Nanomaterials and Fine Particles, Federal Scientific Center for Medical and Preventive Health Risk Management Technologies (82, Monastyrskaya str., 614045, Perm, e-mail: amv@fcrisk.ru).

Ekaterina Sukhikh (Perm, Russian Federation) – Junior Researcher of the Laboratory of Methods for the Analysis of Nanomaterials and Fine Particles, Federal Scientific Center for Medical and Preventive Health Risk Management Technologies (82, Monastyrskaya str., 614045, Perm, e-mail: suhih@fcrisk.ru).

Aleksey Krylov (Perm, Russian Federation) – Junior Researcher of the Laboratory of Methods for the Analysis of Nanomaterials and Fine Particles, Federal Scientific Center for Medical and Preventive Health Risk Management Technologies (82, Monastyrskaya str., 614045, Perm, e-mail: krylov@fcrisk.ru).

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8. Makarov V.N. Torgovkin N.V. Vzveshennye veshhestva v atmosfere Jakutska: proishozhdenie, geohimija, vozdejstvie na zdorov'e [Particulate matter in the atmosphere of Yakutsk: origin, geochemistry, health effects]. Nauka i tehnika v Jakutii, 2021, no. 1(40), pp. 21-26.
9.  Atasheva, A.A. Associacija neblagoprijatnoj jepidemiologicheskoj situacii, svjazannoj s vozdejstviem zagrjaznjajushhih veshhestv v vozduhe na zdorov'e detej (obzor literatury) [Association of the unfavorable epidemiological situation associated with the impact of air pollutants on the health of children (literature review)]. Sistema znanij: obrazovatel'nye iniciativy i razvitie tvorcheskogo potenciala sovremennoj nauki. Sbornik nauchnyh trudov. Kazan, SitIvent, 2021, pp. 186-193.
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16. Trofimenko Yu.V., Chizhova V.S. Otsenka zagryazneniya vozdukha aerozol’nymi chastitsami meneye 10 mkm ot transportnykh potokov na gorodskikh avtomagistralyakh [Estimation of Air Pollution by Aerosol Particles with Size Less than 10 μm from Urban Highway Traffic]. Ecology and Industry of Russia, 2012, no. 9, pp. 41–45.

A complex for the disposal of medical waste has been developed. The process of high-temperature disposal of medical waste using a rotary kiln is considered. An analysis of the situation associated with the formation and disposal of medical waste has been carried out. The heat and material balances of the main elements of the complex are calculated: the working chamber of the rotary kiln, the afterburner, and the air heater. Equipment for purification of combustion products from harmful impurities was selected.

Keywords: medical waste, COVID-19, SanPiN 2.1.3684-21, class B and V waste, waste collection, process flow diagram, rotary kiln.

Igor Bernadiner (Moscow, Russian Federation) – Associate Professor of Department of Innovative technologies of high technology industries, National Research University "Moscow Power Engineering Institute" (14, Krasnokazarmennaya str., 111250, Moscow, e-mail: bernadinerim@gmail.com).

Polina Pysina (Moscow, Russian Federation) – Student of Department of Innovative technologies of high technology industries, National Research University "Moscow Power Engineering Institute" (14, Krasnokazarmennaya str., 111250, Moscow, e-mail: polina.pysina@mail.ru).

1. Iakimenko V. Utilizatsiia meditsinskikh otkhodov. Obzornaia stat'ia [Disposal of medical waste. Review article]. TBO. Obrashchenie s otkhodami, available at: https://www.solidwaste.ru/publ/view/391.html (accessed 18 February 2022).

2. Teltsova L.Z., Gaysin L.V Jekologicheskaja ocenka vlijanija medicinskih othodov na okruzhajushhuju sredu [Ecological assessment of the impact of medical waste on the environment]. Molodoi uchenyi, 2017,
no. 18 (152), pp. 129 – 132.

3. Biron E.A. Klassifikatsiia meditsinskikh otkhodov [Classification of medical waste]. Tverdye bytovye otkhody, 2006, no. 12, pp. 45-47.

4. Ismailov R.A., Solov'eva V.N. Kak sdelat' rynok meditsinskikh otkhodov upravliaemym [How to make the medical waste market manageable]. Tverdye bytovye otkhody, 2022, no. 2(188), pp. 32-37.

5. Nurieva E.M., Mikhailova L.A., Utochkin Iu.A. Sovershenstvovanie sistemy utilizatsii meditsinskikh otkhodov [Improving the system of medical waste disposal]. Nauchnaia sessiia Permskogo gosudarstvennogo meditsinskogo universiteta imeni akademika E.A. Vagnera, Perm, Permskii natsional'nyi issledovatel'skii politekhnicheskii universitet, 2015, pp. 94-96.

6. Karaseva L.A., Piatikop V.M. Realizatsiia sistemy sbora i utilizatsii meditsinskikh otkhodov kak element sistemy profilaktiki vnutribol'nichnykh infektsii [Implementation of the system of collection and disposal of medical waste as an element of the system of prevention of nosocomial infections]. Glavvrach, 2014, no. 2, pp. 52-56.

7. Krupnova T.G., Mashkova I.V., Kostriukova A.M. Selektivnyi sbor otkhodov kak sposob realizatsii zakonodatel'nykh novell v oblasti obrashcheniia s opasnymi otkhodami [Selective waste collection as a way to implement legislative innovations in the field of hazardous waste management]. Nauka Iuzhno-Ural'skogo gosudarstvennogo universiteta. 67 nauchnaia konferentsiia. Cheliabinsk, Izdatel'skii tsentr Iuzhno-Ural'skogo gosudarstvennogo universiteta, 2015, pp. 345-349.

8. Ivanova L.V., Vlasova E.V. Problema utilizatsii biologicheskikh otkhodov na territorii Omskoi oblasti [The problem of biological waste disposal in the Omsk region]. Ekologicheskie chteniia – 2019. X Natsional'naia nauchno-prakticheskaia konferentsiia. Omsk, Omskii gosudarstvennyi agrarnyi universitet im. P.A. Stolypina, 2019, pp. 138-141.

9. Fominova T.O., Ashikhmina T.V., Kuprienko P.S. Obezvrezhivanie otkhodov meditsinskikh uchrezhdenii v regional'noi sisteme obrashcheniia s otkhodami [Waste disposal of medical institutions in the regional waste management system]. Kompleksnye problemy tekhnosfer-noi bezopasnosti. Zadachi, tekhnologii i resheniia kompleksnoi bezopasnosti. Voronezh, Voronezhskii gosudarstvennyi tekhnicheskii universitet, 2019, pp. 234-237.

10. Katalog promyshlennogo oborudovaniia «SPEIS-MOTOR» [Catalog of industrial equipment "SPACE-MOTOR"], available at: https://www.spacemotor.ru/c (accessed 18 February 2022).

The theme of research was the actual problem of production and consumption waste management, prevention of their negative impact on the environment. The purpose of research is development of conceptual approaches, mechanisms of transition of system of life support of municipal formations and regions on the closed cycle of the resource and raw material handling of production at all stages of its life cycle. In accordance with the goal set in the work the following tasks are solved: a retrospective, comparative analysis of the treatment of the subject of environmental legal relations – production and consumption waste; assessment of the sphere of solid municipal waste treatment is given; promising ways and mechanisms of transition to resource-saving system of secondary resources and raw materials treatment as the basis for the formation of closed-loop economy in the life support system of settlements are proposed; the configuration of the regional concept of treatment in By the results of the research the necessity of updating the legislative base with the terminology of the economy of the closed cycle with the exception of the term "waste" as a subject of legal and technical regulation was substantiated. The proposed theoretical approach can act as a legal instrument for the transition of the domestic economy to the resource-saving path of sustainable development, ensuring environmental safety of life support of residential areas. It is proposed to create a comprehensive system for the treatment of construction or other products, used items, substances that have completed their service life - not as hazardous waste, but as secondary material resources – potential sources of meeting the needs of society, safe for the natural environment and human health.

Keywords: environmental safety, secondary resources, construction and urban economy, resource conservation, life support, solid municipal waste, recycled materials.

Sergey Kostarev (Perm, Russian Federation) – Dr. Sci. Tech., Professor of the Department of Information Technologies and Automated Systems, Perm National Research Polytechnic University
(29, Komsomolski av., 614990, Perm); Professor of the Department of Life Safety, Perm State Agrarian-Technological University named after academician D.N. Pryanishnikov (23, Petropavlovskaja str., 614990, Perm); Professor of the Department of Animal Science, Perm Institute of the Federal Penitentiary Service of Russia (125, Karpinskogo str., 614012, Perm, ORCID: 0000-0002-3097-7037, e-mail: iums@dom.raid.ru).

Tatayna Sereda (Perm, Russian Federation) – Dr. Sci. Tech., Professor of the Department of Building Technologies, Perm State Agrarian-Technological University named after academician
D.N. Pryanishnikov (23, Petropavlovskaja str., 614990, Perm, e-mail: iums@dom.raid.ru).

Konstantin Pugin (Perm, Russian Federation) – Dr. Sci. Tech., Professor of the Department of Automobiles and Technological Machines, Perm National Research Polytechnic University
(29, Komsomolski av., 614990, Perm); Head of the Department of Building Technologies,
Perm State Agrarian-Technological University named after academician D.N. Pryanishnikov
(23, Petropavlovskaja str., 614990, Perm).

Eduard Tskhovrebov (Moscow, Russian Federation) – Candidate of Economic Sciences; Associate Professor; A.M. Prokhorov Academy of Engineering Sciences, Scientific Secretary of the Department of Environmental Safety and Sustainable Development (19, Presnensky Val str., 123557, Moscow, e-mail: rebrovstanislav@rambler.ru).

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2. Kalyuzhny B.O. Ekonomika zamknutogo tsykla – novaya paradigma [Closed-loop economics –
a new paradigm]. Tverdye bytovye otkhody, 2018, no. 4, pp. 8-10.

3. Lunev G.G. Razvitie metodologii kompleksnogo ispolyzovaniya vtorichnyh stroitelynyh resursov [Development of methodology of complex use of secondary construction resources]. Moscow, Nauchtekhlitizdat, 2019, 284 p.

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5. Pugin K.G. Upravlenie othodami ferrosplavnogo proizvodstva [Waste management of ferrosplav industri]. Ferrous Metallurgy. Bulletin of Scientific, Technical and Economical Information, 2017, no. 8, pр. 96-99.

6. Kostarev S.N. and Sereda T.G. Development of the automated workstation for the operator of the solid municipal wastes landfill. IOP Conference Series: Earth and Environmental Science, 2021, vol. 677(4), p. 042107.

7. Batrakova G.M., Shamanov V.A., Pan'kova E.I. et al. Utilizatsiia tekhnogennykh otkhodov v kachestve dobavok dlia modifikatsii maloplastichnogo glinistogo syr'ia [Utilization of technogenic waste as additives for modification of low-plastic clay raw materials]. Ekologiia promyshlennogo proizvodstva, 2021, no. 3(115), pp. 14-18. DOI: 10.52190/2073-2589_2021_3_14.

8. Kostarev S.N., Sereda T.G., Sidorova K.A., Kochetova O.V. Disinfecting of the leachate of solid waste landfills with the application of hydrobiological cleaning. IOP Conference Series: Earth and Environmental Science, 2019, vol. 315 (5), p. 052008.

9. Sereda T.G., Kostarev S.N. Development of automated control system for waste sorting. IOP Conference Series: Earth and Environmental Science, 2019, vol. 537(6), p. 062012.

10. Kostarev S.N., Sidorova K.A., Ravilov R.Kh., Kochetova O.V. Development of an automated system for integrated environmental monitoring of a municipal waste landfill. IOP Conference Series: Earth and Environmental Science, 2019, vol. 537 (6), p. 062028.

11. Tshovrebov E., Velichko E., Kostarev S. and Niyazgulov U. Mathematical model of environmentally friendly management of construction waste and waste of urban economy. IOP Conference Series: Earth and Environmental Science, 2021, vol. 937, p. 042062.

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13. Tshovrebov E.S., Velichko E.G. Teoreticheskie polozheniya formirovaniya metodologii sozdaniya kompleksnoy sistemy obrasheniya stroitelynyh othodov [Theoretical provisions of the formation of the methodology for the creation of an integrated system for the treatment of construction waste]. Vestnik MGSU (Monthly Journal on Construction and Architecture), 2017, vol. 12, no. 1, pp. 83-93.

14. Il'ichev, V.A., Kolchunov, V.I., Bakaeva, N.V., Kobeleva S.A. Otsenka ekologicheskoj bezopasnosti stroitel'stva na osnove modeli polnogo resursnogo cikla [Assessment of the environmental safety of construction based on the full resource cycle model]. Nauchnyi vestnik Voronezhskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. Stroitel'stvo i arkhitektura, 2016, no. 4(44), pp. 169-176.

15. Telichenko V.I., Slesarev M.Yu. «Zelenaya» standartizatsiya tehnologiy formirovaniya prirodopodobnoy sredy zhiznedeyatelynosti [“Green” standardization of technologies for forming the nature-friendly living environment]. Vestnik MGSU (Monthly Journal on Construction and Architecture), 2018, vol. 13, iss. 5(116), pp. 558–567.

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24. Goldstein, B.P., Rasmussen, F.N. LCA of Buildings and the Built Environment. Life Cycle Assessment: Theory and Practice. Springer, 2018, pp. 695-722. DOI:10.1007/978-3-319-56475-3_28

Formulation of the problem. Residential premises, regardless of the period of their operation, must maintain comfortable and safe living conditions for the population in them. Often, multi-storey buildings are being built on the territory of low-rise buildings or in its immediate vicinity, which can adversely affect the insolation regime of both residential premises in buildings and adjacent areas. To maintain the normative insolation of such objects, it is necessary to carry out an insolation calculation of territories with different mutual placement of objects of the existing building and the projected shading object, with the establishment of the minimum and maximum number of storeys of the shading object.

The purpose of the work is to analyze the insolation regime of the territory of low-rise housing stock in the design of multi-storey compact buildings.

Results. For the studied territories, combining low-rise and high-rise buildings, the insolation regime was calculated with the construction of a shading model. As a result, the most problematic areas are visible.

Findings. The significance of the obtained results for the construction industry lies in the need to take into account the impact of the designed high-rise facilities not only on the construction site, but also on the surrounding areas, taking into account their functional purpose.

Keywords: planning of territories, insolation, projected objects, reconstruction of building areas, seal building.

Natalya Bessonova (Tyumen, Russian Federation) – Assistant, Industrial University of Tyumen (38, Volodarskogo str., 625000, Tyumen, e-mail: sheneps@mail.ru).

Tatyana Germanova (Tyumen, Russian Federation) – Candidate of Engineering Sciences, Associate Professor, Industrial University of Tyumen (38, Volodarskogo str., 625000, Tyumen, e-mail: germanovatv@tyuiu.ru).

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2.  Kozhaeva L. Morfotipy zastrojki - v teorii i na praktike [Morphotypes of building – in theory and in practice]. Arhitekturnyj vestnik, 2012, no. 2. pp. 132-144.
3. Barabash M.V. Sistemnyj podhod k processu formirovaniya arhitekturnoj sredy shkol'nyh zdanij [A systematic approach to the process of forming the architectural environment of school buildings]. Izvestiya vysshih uchebnyh zavedenij. Severo-Kavkazskij region. Obshchestvennye nauki, 2015, no. 2, pp. 129-133.
4. Manuhina L.A., Meshcheryakov R.V. Ocenka vliyaniya perioda insolyacii na kachestvo i komfortnost' zdanij i sooruzhenij [Assessment of the influence of the period of insolation on the quality and comfort of buildings and structures]. Ekonomika i predprinimatel'stvo, 2018, no. 11 (100), pp. 884-887.
5. Kornienko S.V. Ocenka insolyacii zhilyh zdanij v zone vliyaniya proektiruemogo zdaniya [Assessment of the insolation of residential buildings in the zone of influence of the projected building]. Vestnik Volgogradskogo gosudarstvennogo arhitekturno-stroitel'nogo universiteta. Seriya: Stroitel'stvo i arhitektura, 2012, no. 27 (46), pp. 156-163.
6. Bessonova N.S., Germanova T.V. Otsenka insoliatsionnogo rezhima territorii pri razlichnom razmeshchenii ob"ekta uplotnitel'noi zastroiki [Assessment of the insolation regime of the territory with different placement of the object of sealing development]. Nauchno-tekhnicheskii vestnik Povolzh'ia, 2013, no. 6, pp. 153-156.
7. Hammack D.C. Big plans: the allure and folly of urban design. Journal of American History, 2003, vol. 90, no. 1, pp. 319.
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10. Germanova T., Bessonova N., Davydova I. Assessment of insolation at a playground. MATEC Web of Conferences, 2017, no. 106, pp. 01029.
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13. Germanova T., Bessonova N. Analysis of the insolation regime of the territory for various types of residential development. IOP Conference Series: Earth and Environmental Science, 2018, no. 115(1), pp. 012002.
14. Bessonova N.S., Germanova T.V. Ocenka insolyacionnogo rezhima territorij i pomeshchenij pri mnogoetazhnoj zastrojke [Assessment of the insolation regime of territories and premises in multi-storey buildings]. PNRPU Bulletin. Applied ecology. Urban development, 2014, no. 1, pp. 123-127.
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The relevance of studying the state of the urban environment of small and medium historical cities of Russia, and their impact on the comfort of living in them is an important task today.

The world is experiencing a COVID-19 pandemic. Such conditions make it necessary to reassess the comfort of living in megacities, and evaluate the attractiveness of living in small and medium-sized cities. The accelerated development of digital technologies, mobility - lead to the fact that a person can work remotely, being anywhere. This is a chance to return residents to small towns from megacities, as well as reduce the outflow of residents from small towns.

The process of assessing the state of the urban environment and in the future the formation of a comfortable environment for small historical towns will positively affect the investment attractiveness of the city and, as a result, the comfort of living in it, which will also attract the presence of highly qualified workers, and the development of domestic tourism, which was caused by limited external tourism in a pandemic.

Keywords: valuation, valuation methods, urban environment, real estate, small and medium-sized cities, historical cities, domestic tourism.

Andrey Demidov (Perm, Russian Federation) – Master’s Student, Department of Construction Engineering and Materials Science, Perm National Research Polytechnic University (109, Kuibyshev str., 614010, Perm, e-mail: artur23022002@mail.ru).

Daria Krivogina (Perm, Russian Federation) – Ph.D. in Engineering, Associate Professor, Department of Construction Engineering and Materials Science, Perm National Research Polytechnic University (109, Kuibyshev str., 614010, Perm, e-mail: krivogina@cems.pstu.ru).

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One of the urgent problems in Russia is the poor quality of the roadway and, as a result, traffic accidents with victims.

The aim of this study is “music roads”, the construction of which will lead to a decrease in the number of traffic accidents associated with falling asleep at the wheel of tired drivers.

The article contains an assessment of the technical and organizational possibilities of using carbon materials in the design of musical roads in Russia as a way to reduce the risk of accidents. The author suggested the reasons preventing the appearance of “musical roads” and the possibility of their solution through the use of carbon nanotubes in the creation of asphalt concrete. The article contains data on the physicochemical, adhesive properties of asphalt concrete with the addition of carbon nanotubes.

The author in his article proposed to apply the construction of "musical roads" and use innovative technologies and materials in road construction as a solution to the problems of maintaining the integrity of the road surface.

The construction of "musical roads" will help reduce the level of accidents on the roads. Carbon nanotubes in the production of asphalt concrete will make the roadway several times stronger. As a result, an increase in the life of the roadway and savings in the country's budget for road repairs.

The first experimental section of the musical road in Russia was built in 2020. The world's first musical road was Asphaltophone in Denmark.

Keywords: nanotubes, carbon nanomaterial, carbon nanotubes, musical roads, asphalt concrete pavements, traffic accidents.

Sergey Evseev (Tyumen, Russian Federation) – Graduate Student, Industrial University of Tyumen (38, Volodarskogo str., 625000, Tyumen, e-mail: Serbajo72@gmail.com).

Ilya Ovchinnikov (Tyumen, Russian Federation) – Candidate of Technical Sciences, Industrial University of Tyumen (38, Volodarskogo str., 625000, Tyumen).

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