Experimental and Numerical Investigation of Temperature Development of Ohmic Heating Cured Nonmass Concrete under Subzero Temperature
In this paper, carbon fiber/carbon nanofiber strengthening nonmass concrete slab was designed, and ohmic heating (OH) curing was used to promote the strength formation of the slab under −20°C. COMSOL multiphysical field coupling program has been used to simulate the heating process of nonmass concre...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/9927910 |
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| author | Beimeng Qi Zheng Zhou Weichen Tian Mingzhe Ouyang Xiaocheng Wang Qiang Shi Ye Wang Yang Sun Wei Wang |
| author_facet | Beimeng Qi Zheng Zhou Weichen Tian Mingzhe Ouyang Xiaocheng Wang Qiang Shi Ye Wang Yang Sun Wei Wang |
| author_sort | Beimeng Qi |
| collection | DOAJ |
| description | In this paper, carbon fiber/carbon nanofiber strengthening nonmass concrete slab was designed, and ohmic heating (OH) curing was used to promote the strength formation of the slab under −20°C. COMSOL multiphysical field coupling program has been used to simulate the heating process of nonmass concrete slabs under different conditions. COMSOL analysis results showed that the optimal loading power density of OH cured sample under −20°C was 1000 W/m2∼1200 W/m2. Moreover, numerical analysis results were experimentally validated by the multipoint temperature measurement method. Furthermore, the mechanical properties showed that the compressive strength of the sample cured by 2 days OH curing at −20°C reached up to 48.2 MPa. SEM analysis exhibited that OH curing could improve the interfacial transition zone (ITZ) between the fiber and the matrix, leading to a denser microstructure. This study proved that COMSOL program could provide good theoretical guidance for OH cured nonmass cement concrete under subzero temperature. This work establishes an accurate guideline for electric power supplementation, laying a solid foundation of winter construction with high efficiency and low energy consumption. |
| format | Article |
| id | doaj-art-2240b670405e485ead5b2f34ebaed0ba |
| institution | Kabale University |
| issn | 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-2240b670405e485ead5b2f34ebaed0ba2025-02-03T07:24:14ZengWileyAdvances in Civil Engineering1687-80942021-01-01202110.1155/2021/9927910Experimental and Numerical Investigation of Temperature Development of Ohmic Heating Cured Nonmass Concrete under Subzero TemperatureBeimeng Qi0Zheng Zhou1Weichen Tian2Mingzhe Ouyang3Xiaocheng Wang4Qiang Shi5Ye Wang6Yang Sun7Wei Wang8College of Quality & Safety EngineeringSchool of Civil EngineeringSchool of Civil EngineeringSchool of Civil EngineeringState Grid Inner Mongolia East Power Co., Ltd.State Grid Inner Mongolia East Power Co., Ltd.State Grid Inner Mongolia East Power Co., Ltd.State Grid Inner Mongolia East Power Co., Ltd.School of Civil EngineeringIn this paper, carbon fiber/carbon nanofiber strengthening nonmass concrete slab was designed, and ohmic heating (OH) curing was used to promote the strength formation of the slab under −20°C. COMSOL multiphysical field coupling program has been used to simulate the heating process of nonmass concrete slabs under different conditions. COMSOL analysis results showed that the optimal loading power density of OH cured sample under −20°C was 1000 W/m2∼1200 W/m2. Moreover, numerical analysis results were experimentally validated by the multipoint temperature measurement method. Furthermore, the mechanical properties showed that the compressive strength of the sample cured by 2 days OH curing at −20°C reached up to 48.2 MPa. SEM analysis exhibited that OH curing could improve the interfacial transition zone (ITZ) between the fiber and the matrix, leading to a denser microstructure. This study proved that COMSOL program could provide good theoretical guidance for OH cured nonmass cement concrete under subzero temperature. This work establishes an accurate guideline for electric power supplementation, laying a solid foundation of winter construction with high efficiency and low energy consumption.http://dx.doi.org/10.1155/2021/9927910 |
| spellingShingle | Beimeng Qi Zheng Zhou Weichen Tian Mingzhe Ouyang Xiaocheng Wang Qiang Shi Ye Wang Yang Sun Wei Wang Experimental and Numerical Investigation of Temperature Development of Ohmic Heating Cured Nonmass Concrete under Subzero Temperature Advances in Civil Engineering |
| title | Experimental and Numerical Investigation of Temperature Development of Ohmic Heating Cured Nonmass Concrete under Subzero Temperature |
| title_full | Experimental and Numerical Investigation of Temperature Development of Ohmic Heating Cured Nonmass Concrete under Subzero Temperature |
| title_fullStr | Experimental and Numerical Investigation of Temperature Development of Ohmic Heating Cured Nonmass Concrete under Subzero Temperature |
| title_full_unstemmed | Experimental and Numerical Investigation of Temperature Development of Ohmic Heating Cured Nonmass Concrete under Subzero Temperature |
| title_short | Experimental and Numerical Investigation of Temperature Development of Ohmic Heating Cured Nonmass Concrete under Subzero Temperature |
| title_sort | experimental and numerical investigation of temperature development of ohmic heating cured nonmass concrete under subzero temperature |
| url | http://dx.doi.org/10.1155/2021/9927910 |
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