Name
Savvinova Maria Evgenyevna
Scholastic degree
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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
Web site url
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Articles count: 3
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
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
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