Сalculation theory for shrinkage stresses in cellular concrete wall panels in carbonation processes with account of creep

• Main Authors: Chepurnenko Anton Sergeevich, Bataev Dena Kerim-Sultanovich, Gaziev Minkail Akhmetovich, Pinsker Vadim Aronovich
• Format: Article
• Language: English
• Published: Moscow State University of Civil Engineering (MGSU) 2016-12-01
• Series: Vestnik MGSU
• Subjects: cellular concrete structures; carbonation; shrinkage; creep; modulus of elasticity; shrinkage stresses with account of creep; crack resistance and durability
• Online Access: http://vestnikmgsu.ru/index.php/archive/article/download/3480

The task of comprehensive analysis presented in this article is a development of theory of calculation of shrinkage stresses in cellular concrete wall panels; such stresses occur due to carbonation of concrete because of the creep of material. Analytical dependences characterizing the influence of carbonation on the modulus of elasticity, shrinkage and creep of autoclaved cellular concrete, as well as the regularity of variation of carbonation degree as per thickness of the wall panels depending on time, were obtained. The proposed theory of calculation of shrinkage stresses in cellular concrete wall panels, with account of concrete creep, makes it possible to predict the influence of carbonation processes on crack resistance thereof, and thus to develop measures of technological and structural nature, in order to improve their operational reliability and durability.