Study of the performance parameters of sprayed concrete works in the restoration and strengthening of infrastructure facilities
DOI:
https://doi.org/10.32347/2410-2547.2025.115.271-277Keywords:
sprayed concrete, dry building mixture, adhesion strength, compressive strengthAbstract
The substantiation of the parameters of sprayed concrete works during the restoration, repair and strengthening of infrastructure facilities of various purposes is presented. A study of the properties of raw materials and dry building mixtures based on cement, mineral fillers and additives was carried out in accordance with the current regulatory documents of Ukraine. A number of studies of multi-component building compositions from the point of view of their rheological and physical and mechanical properties of the finished coating have been conducted. The ratio of raw components and curing accelerator additives was determined. Two types of curing accelerator additives are recommended for use. Recommendations are given for the amount of each of the recommended types of curing accelerators relative to the mass of cement. The possibility of using the fly ash as a component of dry mortars for shotcrete works has been investigated. The most rational amount of fly ash was determined, and changes in the bulk mass and density of the material in the wet state were determined for all options. Based on the obtained ratio, the possibility of introducing weak mine rocks and coal beneficiation waste into the sprayed concrete mixture as large aggregate was investigated. The most rational dosage of components that have an impact on the properties of the working mixture and the finished construction coating is presented. The main indicators of the strength of sprayed concrete mixtures using mine rocks and coal beneficiation waste have been determined. Recommendations for the rational use of the given range of raw materials and information on possible differences in their quality are given. The feasibility of rational processing of multi-tonnage waste from the mining and energy industries as a diverse and cheap raw material base for construction has been proven. The main parameters of the technology for the execution of sprayed concrete works using construction mixtures based on cement, mineral fillers and additives and their possible combination with similar polymer materials have been determined.
References
Koval P., Fal A., Mazurak A. (2009) Otsinka zcheplennia torkret-betonu pry remonti betonnykh ta zalizobetonnykh konstruktsii. Dorohy і mosty (Estimation of bonding faculty of shotcrete at repair of concrete and reinforced concrete constructions. Roads and bridges). - Vyp. 11. - S. 157-163.
Masurak A., Barabash V. (2008) Vykorystannia torkret-betonu pry pidsylenni betonnykh ta zalizobetonnykh konstruktsii. Dorohy i mosty (Using torkret-concrete for strengthening concrete and reinforced concrete constructions. Roads and bridges). - Vyp. 10. - S. 172-177.
Andrukhov V.M., Basisty V.O. (2022) Realizatsiia planovo-poperedzhuvalnykh remontnykh robit, yak isnuiucha praktyka zabezpechennia nadiinoi ekspluatatsii budivel i sporud. Suchasni tekhnolohii, materialy i konstruktsii v budivnytstvi. (Implementation of planned and preventive maintenance works, as an existing practice of ensuring reliable operation of buildings and structures. Modern technologies, materials and structures in construction). - No. 2. - S. 222-229.
V. Ya. Babichenko, S. V. Kyrylyuk, A. V. Dudnyk, L. A. Cherepaschuk, O. A. Poddubny (2015). Torkret-beton – sovremennыi kompozytsyonnыi stroytelnыi materyal dlia optymyzatsyy sostava, strukturы y svoistv kotoroho yspolzovano matematycheskoe modelyrovanye. Visnyk Odeskoi derzhavnoi akademii budivnytstva ta arkhitektury. (Shotcrete is a modern composite building material for the optimization of composition, structure and properties of which mathematical modeling is used. Bulletin of the Odessa State Academy of Construction and Architecture). - Vyp. 60. - S. 10-16.
A. Mazurak, I. Kovalik, V. Mykhailechko, P. Ambrozyak, (2013). Doslidzhennia sumisnoi roboty betonu i torkretbetonu. Visnyk Lvivskoho natsionalnoho ahrarnoho universytetu. Arkhitektura i silskohospodarske budivnytstvo (Study of the joint operation of concrete and shotcrete. Bulletin of the Lviv National Agrarian University. Architecture and agricultural construction). - No. 14. - S. 59-64.
BabichenkoV.Ya.; Daneliuk V.I.; Kirilyuk S.V.; Cherepashchuk L.A. (2016) Rozvytok novitnikh tekhnolohii ta obladnannia shchodo vykonannia torkretobetonnykh robit. Novi tekhnolohii v budivnytstvi. (Development of the latest technologies and equipment for shotcrete works. New technologies in construction). - No. 31. - S. 106-111.
A.V. Solodyankin, M.A. Vyhodin, V.V. Kovalenko, V.S. Harkusha, A.Z. Prokudin (2015) Tamponazhnыe y torkret-betonnыe smesy dlia kreplenyia kapytalnыkh vыrabotok uholnыkh shakht. Visnyk Kryvorizkoho natsionalnoho universytetu (Damping and sprayed concrete mixtures for fastening capital works of coal mines. Bulletin of Kryvyi Rih National University). - Vyp. 39. S. 52-57.
Kostyuk T.A., Kas'yanenko K.V., KislyukD.Ya. (2023) Doslidzhennia vplyvu materialiv pronyknoi dii dlia vidnovlennia i remontu budivel i sporud TM Navycon. Suchasni tekhnolohii ta metody rozrakhunkiv u budivnytstvi (Study of the effect of permeable materials for restoration and repair of buildings and structures TM Navycon. Modern technologies and methods of calculations in construction). - Vyp. 19. - S. 92-100.
DSTU B.V. 2.7-239:2010. Building solution. Test methods.
Downloads
Published
Issue
Section
License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
