Research the influence of acoustical treatment of concrete on its water absorption

[摘要] The problem of the influence of the technological seam of concreting on the performance of reinforced concrete structures was studied. The requirements of the current regulatory documents on the construction of the working seam of concreting and the existing proposals on increasing the adhesion of "new" and "old" concrete in Russian and foreign sources are considered. The methodology of carrying out and the results of an experimental study of the effect of acoustic treatment of concrete on its moisture absorption in combination with the following technological factors are presented: the type and pH of the medium (penetrating composition), the orientation of the layers of "old" concrete with respect to the plane of moisture absorption. In the course of this study, the frequency of free vibrations of the structural elements of concrete samples was calculated. The conclusions are formulated that will serve as the basis for drawing up technological maps for the organization of the working seam of concrete structures.

[发布机构] Department of Building Construction and Structural Theory, South Ural State University, Lenin Avenue, 76, Chelyabinsk; 454080, Russia^1;Department of Technical Mechanics, South Ural State University, Lenin Avenue, 76, Chelyabinsk; 454080, Russia^2

[学科分类] 土木及结构工程学

[关键词] Acoustic treatment;Acoustical treatment;Concrete samples;Free vibration;Moisture absorption;Regulatory documents;Structural elements;Technological factors