Abstract
The article presents the results of the performed studies of the process of the intensity of the development of destruction - pseudoplastic deformation and destruction of homogeneously compressed fine-grained oncrete (FGC). However, the issue under study, due to different opinions on the methods for studying the nature of deformation and the process of development of submicro-, micro-, macrodestructions with increasing load, did not bring them closer to specific results. At the same time, the nature of the curvature of the σc-εcх diagrams is explained by the formation of internal microcracks - the formation of pseudoplastic deformations, and in analytical expressions the dependence σc-εcх include the characteristics v_cu and и E_c^0, reflecting the elastic-plastic properties of uniaxially compressed fine-grained concrete and their transfer to non-uniformly compressed concrete. Research has established that the v_cu and и E_c^0 and uniaxially compressed cement concretes recommended by the Building Norms do not quantitatively and qualitatively reflect the nature of the change in the elastic-plastic properties of homogeneously and non-uniformly compressed concretes. Proposed analytical expressions for the dependence of the complete diagrams σc-εcх, as well as the dependences of the change in the elastic coefficients (vc), secant elastic modulus (E_c^sek) and the rate of development of destruction (KD) uniformly compressed FGC with an increase in the load level under «soft» and «hard» loading regimes of the investigated series of samples from FGC using: ε_clx; E_c^sek; v_cu, reflecting the process of changing the elastic-plastic properties of concrete in the ascending and descending sections of the complete diagrams of concrete deformation and their significant difference in homogeneous and inhomogeneous compression. Keywords: coefficient of elasticity; the development of destruction (loosening); secant modulus of elasticity fine-grained concrete; homogeneous (axial) compression; short columns; loading mode; full diagrams.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Collection of scientific works of Odesa Military Academy
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
