porosity

The work describes a method of modifying the ceramic materials by introducing carbon-based nanoscopic additives into the slip composite and glaze composite in the form of water-based suspension for the production of sanitary and technical ceramics of increased quality. Physical and mechanical properties of experimental samples are researched. The results of experimental research are obtained in the form of experimentally determined properties of composite materials which were nanomodified by carbon nanostructures.

In this work, a mathematical model is developed for simulating the behavior of a counter-current moving bed reactor, in which the reduction of porous iron ore pellets to sponge iron is simulated. Simultaneous mass and energy balances within both the solid particles and the reactor, will lead to a set of coupled ordinary differential equations. The iron ore reduction kinetics was modeled with a single particle model. The model was able to satisfactorily reproduce the data of Gilmore Steel Corporation (USA).

The influence of the process of mechanical activation on the properties of fly ash was shown. The effect of ultrafine fly ash and chemical admixtures of polyfunctional action on the properties of fine grained concrete was investigated. It was observed that combination of such complex chemical admixtures and ultrafine fly ash provides the reaching of technical, technological and economical effects in High Performance Concretes.

The article is devoted to the preparation of adsorbents for polymer adsorption on their surface. Adsorption of polymers on the surface of adsorbents from a solution has been widely developed and received a great deal of attention in research works, which prove the topicality of its use in development of new composite materials and solve many problems concerning the polymers characteristics and properties. The adsorbents drawbacks, i.e. small specific surface area, diameter of the primary pores and their amounthave been determined.

Theoretical and experimental investigations of porous permeable materials of saponite-titanium and saponite-aluminium composites are presented in this work. their qualitative and quantitative indexes are determined in PhotoM and Smart-eye applied programs. Metallographic images are presented by combination of structural components with different proportions: phases, shape and color, grain boundaries.

A calculation of the empirical relationships that link the volumetric compression, porosity and pressure in porous rocks of an arbitrary geological region is suggested. The calculation of correlations and empirical relationships between reservoir properties and parameters of elastic waves is conducted by the data of Zaluszany’s wells, which distinguish dry and oil-gas saturated rocks. A detection of oil and water by the density parameter is proposed. A unified algorithm for these calculations is built.

The purpose. The aim of the research is the prediction of the reservoir properties (porosity, effective thicknesses) for communication flow rate of gas production and further forecasting tributaries in new gas promising areas in the North-Western part of Bilche-Velickou zone of Precarpathian foredeep. The methodology of the research was to build a schematic maps of change in area of porosity and effective thicknesses. Results.

Based on the results of our studies, three litho-types of rocks have been identified, their structure characterized, influence of post-sedimentary transformations revealed, etc. Leaching, sulphatization and deposition of ore minerals are considered as the changes superimposed upon the background lithogenesis. The diversity of the processes has resulted in significant petrophysical heterogeheity of geological cross-section, which has to be taken into account during idevelopment of the layers, introduction of the intensive methods, etc.