Modification of Сement Сoncrete by use of Сomplex Additives Based on the Polycarboxylate Ether, Carbon Nanotubes and Microsilica

The use of complex modifiers based on polycarboxylate plasticizers and carbon nanostructures is becoming increasingly popular in modern materials science. The influence of complex additives on the rheological characteristics of cement paste and as well on the physico-mechanical characteristics of heavy concrete is described in this paper. The presence of multi-walled carbon nanotubes in DC-5 additive contributes to better compaction of the concrete structures, but insufficient dispersing of nanotubes in the carboxylate medium and the heterogeneity of their distribution in the cement matrix reduce their effectiveness. Using the complex additive with DC-5 and MS-85 microsilica results in additional compaction of the cement matrix structure with calcium hydrosilicates, thus improving the mechanical properties of the modified concrete.

E.A. KARPOVA¹, Master Student
ALI ELSAED MOHAMED¹, Ph. D. Student
G. SKRIPKI–UNAS², Professor
Ja. KERIENE², Doctor of Sciences (Engineering)
A. KICAITE², Assoc. Prof
G.I. YAKOVLEV¹, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
M. MACIJAUSKAS², Ph. D. Student
I.A. PUDOV¹, Candidate of Sciences (Engineering)
E.V. ALIEV¹, Candidate of Sciences (Engineering)
S.A. SEN’KOV³, Candidate of Sciences (Engineering)

¹ Kalashnikov Izhevsk State Technical University (7, Studencheskaya Street, Izhevsk, 426069, Russian Federation)
² Gediminas Vilnius Technical University (11, Saul·etekio al., LT–10223, Vilnius, Lithuania)
³ Perm State National Research Polytechnic University (29, Komsomolskiy Avenue, Perm, 614990, Russian Federation)

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