Mathematical Modeling and Experimental Substantiation of the Gas Release Process in the Production of Non-Autoclaved Aerated Concrete
The widespread use of aerated concrete in construction has led to the emergence of many types and compositions. However, additional research should fill theoretical gaps in the phenomenon of gas release during the formation of the structure of aerated concrete. Based on theoretical analysis and expe...
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| Online Access: | https://www.mdpi.com/1996-1944/15/7/2642 |
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| author | Evgenii M. Shcherban’ Sergey A. Stel’makh Alexey Beskopylny Levon R. Mailyan Besarion Meskhi Anatoly Shuyskiy Nikita Beskopylny Natal’ya Dotsenko |
| author_facet | Evgenii M. Shcherban’ Sergey A. Stel’makh Alexey Beskopylny Levon R. Mailyan Besarion Meskhi Anatoly Shuyskiy Nikita Beskopylny Natal’ya Dotsenko |
| author_sort | Evgenii M. Shcherban’ |
| collection | DOAJ |
| description | The widespread use of aerated concrete in construction has led to the emergence of many types and compositions. However, additional research should fill theoretical gaps in the phenomenon of gas release during the formation of the structure of aerated concrete. Based on theoretical analysis and experimental studies, the article proposes a mathematical model of the swelling process based on the physicochemical laws of convection and molecular diffusion of hydrogen from a mixture and the conditions of swelling, precipitation, and stabilization of the mixture. An improved method for the manufacture of aerated concrete is proposed, which consists of introducing cement pre-hydrated for 20–30 min into the composition of the aerated concrete mixture and providing improved gas-holding capacity and increased swelling of the mixture, reducing the average density of aerated concrete up to 29% and improving heat-shielding properties up to 31%. At the same time, the small dynamics of a decrease in the strength properties of aerated concrete were observed, which is confirmed by an increased structural quality factor (CSQ) of up to 13%. As a result, aerated concrete has been obtained that meets the requirements of environmental friendliness and has improved mechanical and physical characteristics. Economic efficiency is to reduce the cost of production of aerated concrete and construction in general by about 15%. |
| first_indexed | 2024-03-09T11:39:35Z |
| format | Article |
| id | doaj.art-c8ea997705d94cbfb7cf5406f5eaf7f6 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T11:39:35Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-c8ea997705d94cbfb7cf5406f5eaf7f62023-11-30T23:34:58ZengMDPI AGMaterials1996-19442022-04-01157264210.3390/ma15072642Mathematical Modeling and Experimental Substantiation of the Gas Release Process in the Production of Non-Autoclaved Aerated ConcreteEvgenii M. Shcherban’0Sergey A. Stel’makh1Alexey Beskopylny2Levon R. Mailyan3Besarion Meskhi4Anatoly Shuyskiy5Nikita Beskopylny6Natal’ya Dotsenko7Department of Engineering Geology, Bases and Foundations, Don State Technical University, 344003 Rostov-on-Don, RussiaDepartment of Engineering Geology, Bases and Foundations, Don State Technical University, 344003 Rostov-on-Don, RussiaDepartment of Transport Systems, Don State Technical University, 344003 Rostov-on-Don, RussiaDepartment of Roads, Don State Technical University, 344003 Rostov-on-Don, RussiaDepartment of Life Safety and Environmental Protection, Don State Technical University, 344003 Rostov-on-Don, RussiaDepartment of Technological Engineering and Expertise in the Construction Industry, Don State Technical University, 344003 Rostov-on-Don, RussiaDepartment Hardware and Software Engineering, Don State Technical University, 344003 Rostov-on-Don, RussiaDepartment of Technological Engineering and Expertise in the Construction Industry, Don State Technical University, 344003 Rostov-on-Don, RussiaThe widespread use of aerated concrete in construction has led to the emergence of many types and compositions. However, additional research should fill theoretical gaps in the phenomenon of gas release during the formation of the structure of aerated concrete. Based on theoretical analysis and experimental studies, the article proposes a mathematical model of the swelling process based on the physicochemical laws of convection and molecular diffusion of hydrogen from a mixture and the conditions of swelling, precipitation, and stabilization of the mixture. An improved method for the manufacture of aerated concrete is proposed, which consists of introducing cement pre-hydrated for 20–30 min into the composition of the aerated concrete mixture and providing improved gas-holding capacity and increased swelling of the mixture, reducing the average density of aerated concrete up to 29% and improving heat-shielding properties up to 31%. At the same time, the small dynamics of a decrease in the strength properties of aerated concrete were observed, which is confirmed by an increased structural quality factor (CSQ) of up to 13%. As a result, aerated concrete has been obtained that meets the requirements of environmental friendliness and has improved mechanical and physical characteristics. Economic efficiency is to reduce the cost of production of aerated concrete and construction in general by about 15%.https://www.mdpi.com/1996-1944/15/7/2642aerated concretegassingswellingblowing agentaverage densitythermal conductivity |
| spellingShingle | Evgenii M. Shcherban’ Sergey A. Stel’makh Alexey Beskopylny Levon R. Mailyan Besarion Meskhi Anatoly Shuyskiy Nikita Beskopylny Natal’ya Dotsenko Mathematical Modeling and Experimental Substantiation of the Gas Release Process in the Production of Non-Autoclaved Aerated Concrete Materials aerated concrete gassing swelling blowing agent average density thermal conductivity |
| title | Mathematical Modeling and Experimental Substantiation of the Gas Release Process in the Production of Non-Autoclaved Aerated Concrete |
| title_full | Mathematical Modeling and Experimental Substantiation of the Gas Release Process in the Production of Non-Autoclaved Aerated Concrete |
| title_fullStr | Mathematical Modeling and Experimental Substantiation of the Gas Release Process in the Production of Non-Autoclaved Aerated Concrete |
| title_full_unstemmed | Mathematical Modeling and Experimental Substantiation of the Gas Release Process in the Production of Non-Autoclaved Aerated Concrete |
| title_short | Mathematical Modeling and Experimental Substantiation of the Gas Release Process in the Production of Non-Autoclaved Aerated Concrete |
| title_sort | mathematical modeling and experimental substantiation of the gas release process in the production of non autoclaved aerated concrete |
| topic | aerated concrete gassing swelling blowing agent average density thermal conductivity |
| url | https://www.mdpi.com/1996-1944/15/7/2642 |
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