- BUILDING MATERIALS AND PRODUCTS
- Heat Protection And Humidity Properties Of External Walls Of Buildings Made Of Expanded Clay And Foam Concrete Blocks
- UDC 532.546:536.2.022:536.24.02:697.1 DOI: 10.33622/0869-7019.2021.01.28-34
Aleksey I. ANANIEV, e-mail: firstname.lastname@example.org
Research Institute of Building Physics of the Russian Academy of Architecture and Construction Sciences, Lokomotivnyy proezd, 21, Moscow 127238, Russian Federation
Andrey G. RYMAROV, e-mail: email@example.com
Nikita A. DENSHCHIKOV e-mail: firstname.lastname@example.org
Moscow State University of Civil Engineering (National Research University), Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
Abstract. The article deals with issues related to energy saving in buildings during heat transfer through external walls. Expanded clay foam concrete blocks with uneven distribution of thermal conductivity and density over thickness are used as materials for external walls, which affects the heat-protective and humidity properties of building walls. The article presents the results of complex thermal engineering studies on a large-size wall fragment. The presented sorption and desorption curves show that expanded clay foam concrete has a lower ability to absorb moisture from the air compared to dense expanded clay foam concrete. The analysis of the humidity regime of homogeneous fragments of external walls made of expanded clay foam concrete of different densities makes it possible to conclude that the ability to accumulate moisture in expanded clay concrete is significantly lower in comparison with expanded clay foam concrete under operating conditions. The feasibility of creating a multi-layer expanded clay foam concrete block consisting of the following layers is confirmed: layers with a low density, close to the outer surface, a dense inner layer that prevents the migration of moisture from the room air, and a dense outer layer that protects the wall from rain moisture. A technology for manufacturing ceramsite-foam concrete blocks with an uneven density distribution over the thickness is proposed.
Key words: energy saving, thermal protection of building, external walls, expanded clay foam concrete, humidity conditions of walls.
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- For citation: Ananiev A. I., Rymarov A. G., Denshchikov N. A. Heat Protection and Humidity Properties of External Walls of Buildings Made of Expanded Clay and Foam Concrete Blocks. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering], 2021, no. 1, pp. 28-34. (In Russian). DOI: 10.33622/0869-7019.2021.01.28-34.