This research paper discusses the influence of the zeolite-containing filler of the Beltau deposit and the polycarboxylate superplasticizer on the formation of the porosity of the cement stone. The results of experiments to establish the effect of zeolite-containing filler and plasticizing additive on pore size distribution are graphically presented. The data obtained confirm the feasibility of using this type of filler in concrete.

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This paper presents the results of calculations of the values of soil pressure stresses on the base of the contact network supports by the developed program NDGFOKS in the programming language - C#. Design and construction of the foundations of the contact network supports is provided in accordance with the requirements of regulatory documents and technological charts. When selecting the methods of fastening the overhead contact network supports in the ground of the earth bed, experience in construction of overhead contact network supports in various engineering and geological conditions was taken into account. The methods of calculation of load-carrying capacity of the contact network bases on the ground were analyzed. Methods of fastening the overhead contact network pylons, including those on the weak ground bases, were given. The NDGFOKS program has been developed in the C# programming language in order to calculate the stresses of soil pressure on the foundation faces. The program has been developed taking into account the variety of soils, the characteristics of foundations and the methods of their driving. A block diagram and a diagram of the stresses of soil pressure on the foundations of the contact network supports at different foundations are given.