Diagrams-isochrones of high performance concrete

The solution of the problem of the long-term deformation of reinforced concrete structures with application of nonlinear theories is connected with considerable mathematical difficulties. The research objective is to work out a diagram approach instrumental in calculation of reinforced concrete structures able to bear permanently acting load. Within the limits of the general approach to the description of the full deformation diagram for concrete, made by N. I. Karpenko, empirical dependences based on the description of high performance concrete diagrams-isochrones are offered. A strong correlation between theoretical and experimental data is presented. The received dependences are recommended as calculation vectors in designing reinforced concrete structures.