Gypsum-Cement-Pozzolanic binder (GCPB) has been invented in 60-s of last century in USSR by group of scientists under Mr. A. Volzhenskiy leadership. In that time in USSR and actually in US construction technological processes of civil and industrial buildings increasing a lot. So demand of cement for heavy concretes as a main component high up day to day, year to year. But realisation of that idea in practical way wasn’t easy thing because as we know from «Material science» course – cement is hydraulic binder which hardening in moisture condition or in must cases in water and if we sae about gypsum is an air binder. That means gypsum is hardening and gets its high compression strength in air condition and loosing that strength in moisture condition or under influence of water. After analysing knowledge that have been written above about GCPB we may stay some problems in front of us: 1) First problem connect with modern theoretical physical-mechanical and physical-chemical researches absence, when GCPB hardening process have been described by modern X-Ray spectroscopy and mineralogical analysis. All what we have found in internet resources is basic and theoretical issue with some mechanical tests. 2) Also the main problem when we start see on that researches and mechanical tests, there are some conflicting things as links for technical requirements of GCPB through ages, storage conditions before tests. So according by what we have said above we choose some targets of our research: a) How gypsum binder’s physical-mechanical characteristics going to change as it would be main stuff for GCPB preparing. And also transition process gypsum binder(GB) in gypsum-cement binder (GCB) and then in gypsum-cement-pozzolanic binder (GCPB); b) How gypsum binder’s physical-chemical characteristics going to change during transition process in GCB and then into GCPB with X-Ray spectroscopy analysis.

The rapid economic, scientific and technical development of the Republic of Kazakhstan in order to achieve the modern level of technological development requires a wide production of metal products and equipment using technically and economically effective methods. For this purpose, one of the main ways of producing corrosion-resistant and efficient metal products and parts is cadmium plating. Cadmium plating is flexible, easily amenable to rolling, stamping, bending, freshly prepared sheathing is better welded on acid-free fluxes than zinc. A study of the technology of cadmium tape made of stainless steel grade 2X18Н10T. A comparative analysis of the types and composition of cadmium electrolytes was carried out. The factors affecting the quality of the resulting packaging are investigated, the calculation of the observed main indicators of products after electrolysis is carried out. It is established that the quality of the coating undergoes changes depending on the composition of the electrolyte, its temperature and current density. The surfactant contributed to the production of a durable packaging layer with the possibility of increasing potency during use. Including work with such surfactants as dextrin, gelatin, carpentry glue. It was seen that the cadmium-coated tape has no gloss unless a surfactant is used. It was found that when the current is overvoltage, the tape is covered with fine-grained granules and darkens. When the tape was cadmated, the cadmium layer deposited on the surface of the tape increased with increasing time.

We study all possible constant expansions of the structure of the dense meet-tree ⟨М; <, П⟩ [3]. Here, a dense meet-tree is a lower semilattice without the least and greatest elements. An example of this structure with the constant expansion is a theory that has exactly three pairwise non-isomorphic countable models [6], which is a good example in the context of Ehrenfeucht theories. We study all possible constant expansions of the structure of the dense meet-tree by using a general theory of classification of countable models of complete theories [7], as well as the description of the specificity for the theory of a dense-meet tree, namely, some distributions of countable models of these theories in terms of Rudin– Keisler preorders and distribution functions of numbers of limit models. In this paper, we give a new proof of the theorem that the dense meet-tree theory is countable categorical and complete, which was originally proved by Peretyat’kin. Also, this theory admits quantifier elimination since complete types are forced by a set of quantifier-free formulas, and this leads to the fact that it is decidable

Current paper presents analytical expressions received for investigation of determination of thermophysical characteristics of soil applying the theory of inverse problems. There was considered experimental design with exact measurements and constructed mathematical model for considered case. The analytical expression for transient one-dimensional temperature field was received by Laplace transform. Additional data, such as the heat flux at inlet domain received by conducting numerical simulation of the heat source via computational model. Presented analytical expression for heat transfer parameter allows to determine the soil thermal property without loss of precision, which is crucial in agricultural field. Paper discusses posed peculiarities considered for the inverse problem methodology along with derivation stages of analytical expression. The analytical expression for proposed model is presented both in the frequency and real time domain by applied direct and inverse Laplace transform. The measured outlet input data is interpolated further by the 8-th order polynomial and presented with approximation residuals.