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Published on 26 September 2016

MODERN APPROACHES TO USE OF NATURAL RESOURCES IN MOUNTAIN TERRITORIES FOR THE OBTENTION OF EFFECTIVE BUILDING COMPOSITES

Murtazaev S-A.Y., Salamanova M.Sh., Bisultanov R.G., Murtazaeva T.S-A.

The article gives the analysis of natural resource base of the Chechen Republic for the development of building materials industry. Stocks of cement marls, limestones, dolomites, and large deposits of building and glass-making sands, shell limestones, sandstones, including the huge deposits of gypsum are concentrated in mountainous areas. Natural resource potential of the Chechen mountains allows to obtain portland cement, lime, gypsum binder, fine and coarse aggregate concrete fillers, mineral admixtures (fillers) for obtaining high-strength concretes and composite binders materials. The experimental investigations are focused on a development of effective high-strength concrete of new generation with the use of active mineral additives of a natural origin and graded aggregates. Rocks of sedimentary origin – silicified marls (gaize) and fine quartz sands of Vedeno mountain field were investigated as the active mineral additives. The article describes optimal granulometric composition of graded fine aggregate, based on examined sands and screenings from the crushing of rocks of the Argun deposit. The analysis showed that the best characteristics of filler can be achieved with 1:1 ratio of sand to attrition crushing. The proposed formulation of the composite binder with the use of mineral additives of a sedimentary origin showed relatively better results in comparison with portland cement. Formulations of high-strength concrete were obtained on the basis of developed binder compositions. Rheological and physico-mechanical properties of concrete are investigated. It is discovered, that the use of graded aggregate on the basis of screenings from the crushing of rocks and fine quartz sands and the use of composite binder has a positive effect on the properties of concrete. All the mentioned in combination allows us to obtain concrete of C40 class and above.
CityGrozny
CountryRussia
UDC691.22 (470.6)
Issue2016, № 3(Т.8)
Key wordsnatural resource base, silicified marl, quartz sands, composite binders, granulometric composition, graded aggregate, screening of fragmenting.
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Categories: Articles, Technical-and-Technological-Issues-of-SDMT

Tags: активные минеральные добавки, природно- сырьевая база, окремненный мергель, кварцевые пески, композиционные вяжущие, гранулометрический состав, фракционированный заполнитель, отсевы дробления.

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ISSN 1998-4502 (Print)                                                            ISSN 2499-975Х (Online)