name
Davydova Natalya Nikolaevna
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Academic rank
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Honorary rank
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Organization, job position
• Institute of oil and gas problems SB RAS
научный сотрудник
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Articles count: 6
Сформировать список работ, опубликованных в Научном журнале КубГАУ
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INFLUENCE OF THE MODIFIED MINERAL ADDITIVES ON STRENGTH PROPERTIES OF FINE-GRAINED CONCRETE
Description
In the article we have presented the results of research of influence of activated mineral fillers on mechanical properties of fine-grained concrete. It is shown that clay and zeolites in mechanical activated condition have increased both early and estimated durability of concrete
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INFLUENCE OF A WAY OF CRUSHING ON ACTIVITY OF INGREDIENTS OF CONCRETE MIX
Description
The article presents the results of the researches of the influence of a way of crushing on activity of ingredients of concrete mix. It is shown that sand crushing by method of free kick in a planetary mill of AGO-2 allows not only to raise its specific surface, to receive the demanded particle size distribution, but also to improve quality of a surface of particles by removal, destruction of superficial inactive films. On a new surface of sand excess energy concentrates, the active centers are formed and there is a fixing of germs of new growths of products of hydration of cement in a place of an exit of dislocations to surfaces of crystals of sand that leads to substantial increase of chemical activity and reactionary ability of sand
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Description
Experimental data on research of influence of technological parameters on structure and durability at compression of the modified fine-grained concrete are presented in the article. It is shown, that at the optimum maintenance of a mineral additive as a part of the mixed knitting the optimum capillary and porous structure of a cement stone and the increased volume of hydrate new growths is formed. At the raised volume maintenance of an active mineral additive there is a formation of the non-optimal capillary and porous structure of a stone leading to decrease in efficiency of modifying
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MECHANICAL ACTIVATION PROCESSING OF A FILLER FOR FINE-GRAINED CONCRETE QUALITY IMPROVEMENT
Description
The results of research of influence of mechanical activation of filler (river sand) on physical, mechanical and structural properties of fine-grained concrete are presented in the article. The prospects of using mechanical activation technologies for production of concrete with the improved complex of technical characteristics are established
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PROPERTIES OF THE FINE-GRAINED CONCRETE RECEIVED AT NEGATIVE TEMPERATURES
Description
Researches of fine-grained concrete testify the possibility of using mineral mechanically activated and nano-additives in a complex with the anti-frost additives providing the organization of production of concrete works at negative air temperatures that is especially important for the Arctic regions
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IMPROVEMENT OF QUALITY OF FINE-GRAINED CONCRETE WITH CEMENT MECHANICAL ACTIVATION
Description
In the article we have presented the experimental data of improvement of physic mechanical properties and structures of fine-grained concrete by a method of mechanical activation of stale cement in various devices
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