Բետոնի լարվածային վիճակի վրա բազմաշերտ ածխածնային նանոխողովակների ազդեցության թվային ուսումնասիրություն

Abstract

The incorporation of carbon nanotubes (CNTs) into concrete and mortar contributes to a significant improvement in their mechanical properties. Although experimental methods provide real and reliable results, they require considerable material resources and time. Modern numerical modeling techniques are employed to predict and optimize experimental outcomes. Using the ANSYS computational software and the Finite Element Method (FEM), cube specimens were modeled with various CNT concentrations and outer diameters. The numerical analysis focused on evaluating the elastic moduli of the specimens (E₁, E₂, E₃) and their stress distribution under uniaxial compression. Under the same compressive pressure, the normal stresses within the midsection of the concrete matrix significantly decreased compared to the reference specimens — by 6,25 % for smaller-diameter CNTs and by 19,46 % in the corner points for CNTs of medium diameters. The obtained results are in good agreement with experimental findings, confirming the effectiveness of CNT-reinforced cementitious nanomortars and nanoconcretes. The conducted study can serve as a foundation for further experimental research, helping to save material resources and time, as well as enhancing the mechanical performance of CNT-based mortars and concretes.