Thermal Properties of Lightweight Steel Concrete Wall Panels under Different Humidity Conditions
The paper presents the thermal properties of lightweight steel concrete wall panels under different humidity conditions: under normal operation conditions and high moisture of the structure. The total thermal resistance (considering thermal inhomogeneity) of the enclosing lightweight steel concrete...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/9/3193 |
| _version_ | 1797503983467626496 |
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| author | Vladimir Rybakov Irina Ananeva Anatoly Seliverstov Kseniia Usanova |
| author_facet | Vladimir Rybakov Irina Ananeva Anatoly Seliverstov Kseniia Usanova |
| author_sort | Vladimir Rybakov |
| collection | DOAJ |
| description | The paper presents the thermal properties of lightweight steel concrete wall panels under different humidity conditions: under normal operation conditions and high moisture of the structure. The total thermal resistance (considering thermal inhomogeneity) of the enclosing lightweight steel concrete structure with a thickness of 310 mm using monolithic low-density foam concrete (density grade of D200), at an equilibrium humidity of 5% and 8%, was experimentally established. It was equal to 4.602 m<sup>2.0</sup>C/W and 4.1 m<sup>2.0</sup>C/W, respectively. In the dry state, the total thermal resistance of this structure was 5.59 m<sup>2.0</sup> C/W, which corresponds to a thermal conductivity coefficient of 0.057 m °C/W. The influence of both horizontal and vertical joints of lightweight steel concrete wall panels and the absence of thermoprofiles on thermal properties was insignificant when using heat-insulating gaskets. The actual total thermal resistance of the structure was 2.5–2.8 times higher than that obtained by calculation under high-humidity conditions (29–32%). At the same time, the decrease in the value compared to the same value at an equilibrium humidity of 5% was only 4–6%. This indicates the good workability even of a structure with high-humidity foam concrete if the reduced total thermal resistance is complied with by the standardized one. |
| first_indexed | 2024-03-10T03:58:10Z |
| format | Article |
| id | doaj.art-1113574b2c9447b981739eacd6007bac |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T03:58:10Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-1113574b2c9447b981739eacd6007bac2023-11-23T08:39:36ZengMDPI AGMaterials1996-19442022-04-01159319310.3390/ma15093193Thermal Properties of Lightweight Steel Concrete Wall Panels under Different Humidity ConditionsVladimir Rybakov0Irina Ananeva1Anatoly Seliverstov2Kseniia Usanova3Institute of Civil Engineering, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, RussiaOTSK, Ltd., 194223 St. Petersburg, RussiaSovbi, Ltd., 191024 St. Petersburg, RussiaInstitute of Civil Engineering, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, RussiaThe paper presents the thermal properties of lightweight steel concrete wall panels under different humidity conditions: under normal operation conditions and high moisture of the structure. The total thermal resistance (considering thermal inhomogeneity) of the enclosing lightweight steel concrete structure with a thickness of 310 mm using monolithic low-density foam concrete (density grade of D200), at an equilibrium humidity of 5% and 8%, was experimentally established. It was equal to 4.602 m<sup>2.0</sup>C/W and 4.1 m<sup>2.0</sup>C/W, respectively. In the dry state, the total thermal resistance of this structure was 5.59 m<sup>2.0</sup> C/W, which corresponds to a thermal conductivity coefficient of 0.057 m °C/W. The influence of both horizontal and vertical joints of lightweight steel concrete wall panels and the absence of thermoprofiles on thermal properties was insignificant when using heat-insulating gaskets. The actual total thermal resistance of the structure was 2.5–2.8 times higher than that obtained by calculation under high-humidity conditions (29–32%). At the same time, the decrease in the value compared to the same value at an equilibrium humidity of 5% was only 4–6%. This indicates the good workability even of a structure with high-humidity foam concrete if the reduced total thermal resistance is complied with by the standardized one.https://www.mdpi.com/1996-1944/15/9/3193lightweight steel concrete structuressteel profilefoam concretethermal resistancethermal conductivity coefficient |
| spellingShingle | Vladimir Rybakov Irina Ananeva Anatoly Seliverstov Kseniia Usanova Thermal Properties of Lightweight Steel Concrete Wall Panels under Different Humidity Conditions Materials lightweight steel concrete structures steel profile foam concrete thermal resistance thermal conductivity coefficient |
| title | Thermal Properties of Lightweight Steel Concrete Wall Panels under Different Humidity Conditions |
| title_full | Thermal Properties of Lightweight Steel Concrete Wall Panels under Different Humidity Conditions |
| title_fullStr | Thermal Properties of Lightweight Steel Concrete Wall Panels under Different Humidity Conditions |
| title_full_unstemmed | Thermal Properties of Lightweight Steel Concrete Wall Panels under Different Humidity Conditions |
| title_short | Thermal Properties of Lightweight Steel Concrete Wall Panels under Different Humidity Conditions |
| title_sort | thermal properties of lightweight steel concrete wall panels under different humidity conditions |
| topic | lightweight steel concrete structures steel profile foam concrete thermal resistance thermal conductivity coefficient |
| url | https://www.mdpi.com/1996-1944/15/9/3193 |
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