Abstract
Aerated concrete is one of the most popular building materials, which has unique properties such as light weight, high sound and heat insulation characteristics and strength. However, its porous structure may reduce its strength and durability. In this article, the author examines the various types of pores in aerated concrete and their effect on its properties. Gel and capillary pores are the main types of pores that are formed during the production of aerated concrete. Air (gas) pores are formed as a result of a chemical reaction between gas and binder. They also affect the properties of aerated concrete, but to a lesser extent than gel and capillary ones. However, air entrainment pores negatively affect the quality of aerated concrete. This type of pore is formed when pouring an aerated concrete mixture and represents air bubbles that reduce the strength of the material and impair its thermal insulation properties. To improve the quality of aerated concrete and prevent the formation of air entrainment pores, it is necessary to optimize production technologies and control the pouring process. The article also discusses the features of the formation of an air entrainment pore and the transformation of the shape of entrained air in an air entrainment pore with the shape of an inverted drop.
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