Currently, a large amount of research is devoted to the use of polymer composite materials applied for increasing the strength and durability of reinforced concrete elements. In compressed reinforced concrete columns, the bearing capacity depends on the eccentricity of the external force application and the corresponding stress-strain state, as well as on the arrangement and quantity of composite materials bonded to the surface of the structure. The choice of the arrangement scheme of composite materials depending on the stress state of the structure is of current interest for researchers. At the same time, studies conducted on centrally compressed elements often have contradictory effects. The main purpose of this study is to perform numerical experiment of a digital model for the centrally compressed concrete column reinforced with composite materials. The calculation results for 3 short columns with different reinforcement schemes are presented. It is shown that the use of composite materials to reinforce structures increases the bearing capacity up to 10%. Based on the study results, recommendations on the optimal schemes of reinforcement with composite clamps of inflexible columns reinforced in the transverse direction are proposed.

Keywords: reinforced concrete columns, normal sections, finite element modeling, reinforcement with composite materials

Today non-destructive methods are widely spread due to its mobility and accuracy. This article describes the main types of nondestructive testing commonly used in manufacturing and at the construction site, namely magnetic, eddy current, ultrasonic and visual. Describe the principle of each method and its key features.

Keywords: Non-destructive testing, mechanical characteristics, strength, hardness

The following article deals with the survey techniques of sustainability properties of metal structures by destructive and non-destructive methods.

Keywords: "examination, strength, diagnosis, mechanical properties, nondestructive testing, pipe sheet pile design "

The questions connected with an assessment of mechanical characteristics of steel elements of designs of tribunes of Torpedo stadium in Taganrog are considered. The analysis of the strength characteristics of metal of columns received by a nondestructive method, beams, the top and bottom belts of farms and раскосов is provided. Results of processing of values of mechanical characteristics on compliance most are shown to the general law of distribution of Veybull. For values of a limit of fluidity and strength scale and form parameters, and also shift which defines critical bottom possible value of the mechanical characteristic of theoretical distribution are received. The analysis of accessory of metal of the surveyed elements to the corresponding class of durability of construction steel with the conclusion that all metal of the surveyed elements has a class durabilities not lower than C 255 that meets requirements imposed by the project to durability of metal is given.

Keywords: nondestructive control, mechanical characteristics, durability, diagnostics, class of durability, metal test

Results of research of fixture of a wooden design of the river mooring in Rostov-on-Don, being in operation within more than 150 years are presented. As the fixture was possible to be taken from a design in a single copy, it wasn't represented possible to apply destroying test methods. Therefore mechanical characteristics of metal were measured by means of system of nondestructive control "Durability", developed at the Rostov state construction university and a portable tverdomer with ultrasonic and dynamic sensors. Approximate compliance of strength characteristics of studied metal, allegedly krichny iron is established, to characteristics let out now staly. Approximately on a fluidity limit studied metal corresponds to a limit of fluidity of St3 steel. The short analysis of loss of the area of live section of fixture and the forecast of possible further operation of a design in the assumption is made that conditions of this operation won't change.

Keywords: non-destructive testing, mechanical properties, strength, diagnostics, a priori information, test the metal

The article is devoted to the turnover of the largest ports in Russia for the period from 2008 to 2012. The problems that arise in the interaction of road transport and ports, as well as their possible solutions are given  

Keywords: The seaports of the Russian Federation, Freight transport, turnover, turnover growth problems, Interaction of road transport and ports.

The problem of a radial compressive stress in the sample to assess their impact on the parameters of these stresses pressing indentors

Keywords: Diagnostics, resource efficiency, mechanical properties, strength, ductility, hardness, toughness, nondestructive testing, destructive

We consider the problem of pressing a conical indenter in pre-compressed radial force elastoplastic medium. The influence of the initial stresses on the parameters of the indentation.

Keywords: Diagnostics, resource efficiency, mechanical properties, strength, ductility, hardness, toughness, nondestructive testing, destructive