In the current economic situation for many domestic enterprises, the problems of development of investment activity are of the utmost importance. The range of issues solved in the field of investment management is wide enough and connected with the main activities of the enterprise. The fact of the shortage of investment resources for the creation of high-tech manufacturing facilities in advanced fields of industry requires a special approach to the formation and management of private resources of large industrial enterprises. The existing problems together with the complexity and high degree of uncertainty of investment results have created demand for improving management of investment process of an enterprise.

In this paper, the authors considered the issues related to reducing negative impact of large-tonnage toxic industrial wastes on environment by means of their detoxication and application as effective binders for building materials. For implementation of scientific researches, the standard methods of analysis of physical and mechanical properties have been used for the stone based on iron and sulfur containing binders; the contemporary methods of differential and thermal, X-ray diffraction analysis, microscopic analysis and testing apparatuses have been used. While carrying out experimental research, the authors have realized a scientific hypothesis stating that for increasing the effect of additional activation for eact particles of iron- and sulfur containing additives, their co-milling has been applied. As the result, there took place mutual neutralization and detoxication of solid industrial by-products with opposite chemical properties. In the course of experimental work aimed at preliminary determination of composition and activation of sulfur-contating additives, wet grinding was done on the pebble mill by applying abrasive and impact forces. In the course of combined action of mechano-chemical activation of industrial by-products, in the presence of water, accompanied by sulfur-containing raw mixtures for manufacturing of building materials, there was used the method of mutual neutralizion of chemically hazardous substances forming a part of industrial wastes. These methods enable to reduce the consumption of a binder due to its partial replacement by toxic by-products of oil and gas industry and metallurgy. The characteristics and properties of the specimens of iron and sulfurcontaining binder have been studied at the age of 7, 14 and 28 days of air hardening. The specimens were exposed to thermal and steam curing. It was stated that air hardened iron and sulfur-containing binders at the age of 14 days have reached the ultimate compressive strength of 62.0 MPa, at the age of 28 days – 66.5 MPa, correspondingly. The same composition exposed to steam curing at the age of 28 days has compression strength of 74.5 MPa that attests to the fact that steam curing has a positive impact on gain in strength of iron and sulfur-containing binder. The obtained research results could be apllied as an effective substance for manufacturing mortars and concrets in construction industry.

The authors have shown the effective use of synthesized epoxidized rubber seed oil as a modifier of epoxy compound materials. It was stated that at the content of epoxidized rubber seed oil of 10 weight parts for 100 weight parts of epoxy resin ED-20, hardness and wear have been increased by 34 and 21% correspondingly, while the frictional coefficient was being reduced by a factor of 1.5. Wollastonite has been synthesized on the base of rice husk and limestone. By means of the X-ray diffraction method, it was proven that the specimen of synthesized calcium silicate with the molar ratio СаСО₃:SiO₂ = 1.2:1 is characterized by the structure closest to the naturally occurring wollastonite.

The limited deposits of natural wollastonite in our country and the labor intensity of its extraction and processing, make promising the development of methods of its synthesis based on various types of domestic plant and fossil raw materials, especially industrial waste. The use of rice husk ash and calcium oxide in the solid-phase synthesis of calcium silicates ensures the content of β-wollastonite in their composition at the level of naturally-occurring Miwoll10-97. The obtained results indicate greater efficiency of amorphous silicon dioxide for the synthesis in the solid phase of calcium silicates. Synthetic calcium silicates, like naturally occurring wollastonite, have a pronounced alkaline surface nature, with the acid-base characteristics not influenced significantly by the sintering temperature, as well as the type and ratio of initial components. Calcium silicate produced from zeolite-siliceous rock has the smallest particle size and the narrowest particle size distribution, i.e. the most homogeneous structure. All investigated calcium silicates increase the wear resistance of epoxy materials, and low-porous silica sand-based fillers are more effective, providing high resistance of filled epoxy materials to climatic factors as well.